| ADT | KADH | Ada Regional Airport | Ada |
| ADW | KADW | Joint Base Andrews | Camp Springs |
| AFW | KAFW | Perot Field/Fort Worth Alliance Airport | Fort Worth |
| AGC | KAGC | Allegheny County Airport | Pittsburgh |
| AHN | KAHN | Athens Ben Epps Airport | Athens |
| AKC | KAKR | Akron Fulton International Airport | Akron |
| ALI | KALI | Alice International Airport | Alice |
| ALM | KALM | Alamogordo White Sands Regional Airport | Alamogordo |
| ALN | KALN | St Louis Regional Airport | Alton |
| ANB | KANB | Anniston Regional Airport | Anniston |
| AND | KAND | Anderson Regional Airport | Anderson |
| ANN | PANT | Annette Island Airport | Metlakatla |
| APA | KAPA | Centennial Airport | Denver metropolitan area |
| APF | KAPF | Naples Municipal Airport | Naples |
| APG | KAPG | Phillips Army Air Field | Aberdeen |
| ARA | KARA | Acadiana Regional Airport | New Iberia |
| AST | KAST | Astoria Regional Airport | Astoria |
| AUW | KAUW | Wausau Downtown Airport | Wausau |
| AXN | KAXN | Chandler Field | Alexandria |
| BAB | KBAB | Beale Air Force Base | Marysville |
| BAD | KBAD | Barksdale Air Force Base | Bossier City |
| BAF | KBAF | Westfield-Barnes Regional Airport | Westfield |
| BBD | KBBD | Curtis Field | Brady |
| BCE | KBCE | Bryce Canyon Airport | Bryce Canyon National Park |
| BCT | KBCT | Boca Raton Airport | Miami metropolitan area |
| BDE | KBDE | Baudette International Airport | Baudette |
| BDR | KBDR | Igor I Sikorsky Memorial Airport | Bridgeport |
| BFK | KBKF | Buckley Space Force Base | Aurora |
| BFM | KBFM | Mobile Downtown Airport | Mobile |
| BFP | KBVI | Beaver County Airport | Beaver |
| BIF | KBIF | Biggs Army Air Field (Fort Bliss) | Fort Bliss/El Paso |
| BIG | PABI | Allen Army Airfield | Fort Greely |
| BIX | KBIX | Keesler Air Force Base | Biloxi |
| BJI | KBJI | Bemidji Regional Airport | Bemidji |
| BKE | KBKE | Baker City Municipal Airport | Baker City |
| BKH | PHBK | Barking Sands Airport | Kekaha |
| BKL | KBKL | Burke Lakefront Airport | Cleveland |
| BLF | KBLF | Mercer County Airport | Bluefield |
| BLH | KBLH | Blythe Airport | Blythe |
| BMG | KBMG | Monroe County Airport | Bloomington |
| BNO | KBNO | Burns Municipal Airport | Burns |
| BPI | KBPI | Miley Memorial Field | Big Piney |
| BTL | KBTL | Battle Creek Executive Airport at Kellogg Field | Battle Creek |
| BVY | KBVY | Beverly Regional Airport | Beverly |
| BWG | KBWG | Bowling Green Warren County Regional Airport | Bowling Green |
| BYH | KBYH | Arkansas International Airport | Blytheville |
| BYI | KBYI | Burley Municipal Airport | Burley |
| BYS | KBYS | Bicycle Lake Army Air Field | Fort Irwin/Barstow |
| CAR | KCAR | Caribou Municipal Airport | Caribou |
| CBM | KCBM | Columbus Air Force Base | Columbus |
| CCY | KCCY | Northeast Iowa Regional Airport | Charles City |
| CDS | KCDS | Childress Municipal Airport | Childress |
| CEF | KCEF | Westover Metropolitan Airport / Westover Air Reserve Base | Chicopee |
| CEW | KCEW | Bob Sikes Airport | Crestview |
| CGF | KCGF | Cuyahoga County Airport | Cleveland |
| CLM | KCLM | William R Fairchild International Airport | Port Angeles |
| CLU | KBAK | Columbus Municipal Airport | Columbus |
| CNU | KCNU | Chanute Martin Johnson Airport | Chanute |
| COE | KCOE | Coeur D'Alene Airport - Pappy Boyington Field | Coeur d'Alene |
| COF | KCOF | Patrick Space Force Base | Cocoa Beach |
| CON | KCON | Concord Municipal Airport | Concord |
| CRE | KCRE | Grand Strand Airport | North Myrtle Beach |
| CRG | KCRG | Jacksonville Executive at Craig Airport | Jacksonville |
| CSN | KCXP | Carson Airport | Carson City |
| CSV | KCSV | Crossville Memorial Airport Whitson Field | Crossville |
| CTB | KCTB | Cut Bank International Airport | Cut Bank |
| CUB | KCUB | Jim Hamilton L.B. Owens Airport | Columbia |
| CVO | KCVO | Corvallis Municipal Airport | Corvallis |
| CVS | KCVS | Cannon Air Force Base | Clovis |
| CXO | KCXO | Conroe-North Houston Regional Airport | Houston |
| CZF | PACZ | Cape Romanzof LRRS Airport | Cape Romanzof |
| DAA | KDAA | Davison Army Air Field | Fort Belvoir |
| DAG | KDAG | Barstow Daggett Airport | Barstow |
| DAN | KDAN | Danville Regional Airport | Danville |
| DET | KDET | Coleman A. Young Municipal Airport | Detroit |
| DHT | KDHT | Dalhart Municipal Airport | Dalhart |
| DLF | KDLF | Laughlin Air Force Base | Del Rio |
| DLS | KDLS | Columbia Gorge Regional Airport | The Dalles |
| DMA | KDMA | Davis Monthan Air Force Base | Tucson |
| DMN | KDMN | Deming Municipal Airport | Deming |
| DNL | KDNL | Daniel Field | Augusta |
| DPA | KDPA | Dupage Airport | Chicago/West Chicago |
| DRA | KDRA | Desert Rock Airport | Mercury |
| DRI | KDRI | Beauregard Regional Airport | DeRidder |
| DRT | KDRT | Del Rio International Airport | Del Rio |
| DUA | KDUA | Durant Regional Airport - Eaker Field | Durant |
| DUG | KDUG | Bisbee Douglas International Airport | Bisbee |
| DXR | KDXR | Danbury Municipal Airport | Danbury |
| DYS | KDYS | Dyess Air Force Base | Abilene |
| ECG | KECG | Elizabeth City Regional Airport & Coast Guard Air Station | Elizabeth City |
| EDF | PAED | Elmendorf Air Force Base | Anchorage |
| EDW | KEDW | Edwards Air Force Base | Edwards |
| EED | KEED | Needles Airport | Needles |
| EEN | KEEN | Dillant Hopkins Airport | Keene |
| EFD | KEFD | Ellington Airport | Houston |
| EGI | KEGI | Duke Field | Crestview |
| EHM | PAEH | Cape Newenham LRRS Airport | Cape Newenham |
| EIL | PAEI | Eielson Air Force Base | Fairbanks |
| EKA | KEKA | Murray Field | Eureka |
| EKN | KEKN | Elkins-Randolph County Regional Airport | Elkins |
| ELY | KELY | Ely Airport Yelland Field | Ely |
| END | KEND | Vance Air Force Base | Enid |
| ENN | PANN | Nenana Municipal Airport | Nenana |
| ENV | KENV | Wendover Airport | West Wendover |
| ENW | KENW | Kenosha Regional Airport | Kenosha |
| ESF | KESF | Esler Army Airfield / Esler Regional Airport | Central Louisiana |
| EVW | KEVW | Evanston-Uinta County Airport-Burns Field | Evanston |
| FAF | KFAF | Felker Army Air Field | Newport News |
| FBG | KFBG | Simmons Army Air Field | Fort Bragg |
| FBK | PAFB | Ladd Army Airfield | Fort Wainwright |
| FCS | KFCS | Butts AAF (Fort Carson) Air Field | Fort Carson |
| FDY | KFDY | Findlay Airport | Findlay |
| FFO | KFFO | Wright-Patterson Air Force Base | Dayton |
| FHU | KFHU | Sierra Vista Municipal Airport / Libby Army Air Field | Sierra Vista |
| FKL | KFKL | Venango Regional Airport | Franklin |
| FME | KFME | Fort Meade Executive Airport | Fort Meade |
| FMN | KFMN | Four Corners Regional Airport | Farmington |
| FMY | KFMY | Page Field | Fort Myers |
| FNL | KFNL | Northern Colorado Regional Airport | Fort Collins |
| FOE | KFOE | Topeka Regional Airport | Topeka |
| FPR | KFPR | Treasure Coast International Airport | Fort Pierce |
| FRG | KFRG | Republic Airport | Long Island |
| FRI | KFRI | Marshall Army Air Field | Fort Riley |
| FSI | KFSI | Henry Post Army Air Field | Fort Sill |
| FST | KFST | Fort Stockton Pecos County Airport | Fort Stockton |
| FTK | KFTK | Godman Army Air Field | Fort Knox |
| FTY | KFTY | Fulton County Airport Brown Field | Atlanta |
| FWH | KNFW | NAS Fort Worth JRB / Carswell Field | Fort Worth |
| FXE | KFXE | Fort Lauderdale Executive Airport | Fort Lauderdale |
| FYV | KFYV | Drake Field | Fayetteville |
| GFL | KGFL | Floyd Bennett Memorial Airport | Glens Falls |
| GLD | KGLD | Goodland Municipal Airport | Goodland |
| GLS | KGLS | Scholes International At Galveston Airport | Galveston |
| GMU | KGMU | Greenville Downtown Airport | Greenville |
| GON | KGON | Groton New London Airport | Groton |
| GRF | KGRF | Gray Army Air Field | Joint Base Lewis McChord |
| GSB | KGSB | Seymour Johnson Air Force Base | Goldsboro |
| GUS | KGUS | Grissom Air Reserve Base | Peru |
| GUY | KGUY | Guymon Municipal Airport | Guymon |
| GWO | KGWO | Greenwood–Leflore Airport | Greenwood |
| HBG | KHBG | Hattiesburg Bobby L Chain Municipal Airport | Hattiesburg |
| HBR | KHBR | Hobart Regional Airport | Hobart |
| HFD | KHFD | Hartford Brainard Airport | Hartford |
| HIF | KHIF | Hill Air Force Base | Ogden |
| HIO | KHIO | Portland Hillsboro Airport | Portland |
| HKY | KHKY | Hickory Regional Airport | Hickory |
| HLG | KHLG | Wheeling Ohio County Airport | Wheeling |
| HMN | KHMN | Holloman Air Force Base | Alamogordo |
| HON | KHON | Huron Regional Airport | Huron |
| HOP | KHOP | Campbell Army Airfield (Fort Campbell) | Fort Campbell |
| HQM | KHQM | Bowerman Airport | Hoquiam |
| HST | KHST | Homestead Air Reserve Base | Homestead |
| HTV | KUTS | Huntsville Regional Airport | Huntsville |
| HUA | KHUA | Redstone Army Air Field | Redstone Arsenal |
| HUF | KHUF | Terre Haute Regional Airport, Hulman Field | Terre Haute |
| HUL | KHUL | Houlton International Airport | Houlton |
| HUT | KHUT | Hutchinson Municipal Airport | Hutchinson |
| HWO | KHWO | North Perry Airport | Hollywood |
| HYR | KHYR | Sawyer County Airport | Hayward |
| IAB | KIAB | McConnell Air Force Base | Wichita |
| IFP | KIFP | Laughlin Bullhead International Airport | Bullhead City |
| IGM | KIGM | Kingman Airport | Kingman |
| IKK | KIKK | Greater Kankakee Airport | Kankakee |
| ILN | KILN | Wilmington Airpark | Wilmington |
| INK | KINK | Winkler County Airport | Wink |
| INT | KINT | Smith Reynolds Airport | Winston Salem |
| INW | KINW | Winslow Lindbergh Regional Airport | Winslow |
| ISM | KISM | Kissimmee Gateway Airport | Greater Orlando |
| ISO | KISO | Kinston Regional Jetport At Stallings Field | Kinston |
| JCT | KJCT | Kimble County Airport | Junction |
| JFN | KHZY | Northeast Ohio Regional Airport | Ashtabula County |
| JHW | KJHW | Chautauqua County-Jamestown Airport | Jamestown |
| JRF | PHJR | Kalaeloa Airport | Kapolei |
| JXN | KJXN | Jackson County Airport/Reynolds Field | Jackson |
| KLS | KKLS | Southwest Washington Regional Airport | Cowlitz County |
| KPC | PAPC | Port Clarence Coast Guard Station | Port Clarence |
| LAA | KLAA | Southeast Colorado Regional Airport | Lamar |
| LBT | KLBT | Lumberton Regional Airport | Lumberton |
| LEE | KLEE | Leesburg International Airport | Leesburg |
| LFI | KLFI | Langley Air Force Base | Hampton |
| LFK | KLFK | Angelina County Airport | Lufkin |
| LGU | KLGU | Logan-Cache Airport | Logan |
| LJN | KLBX | Texas Gulf Coast Regional Airport | Angleton |
| LMT | KLMT | Crater Lake-Klamath Regional Airport | Klamath Falls |
| LND | KLND | Hunt Field | Lander |
| LOL | KLOL | Derby Field | Lovelock |
| LOU | KLOU | Bowman Field | Louisville |
| LOZ | KLOZ | London-Corbin Airport/Magee Field | London |
| LRF | KLRF | Little Rock Air Force Base | Jacksonville |
| LSF | KLSF | Lawson Army Air Field | Fort Benning |
| LSV | KLSV | Nellis Air Force Base | Las Vegas |
| LTS | KLTS | Altus Air Force Base | Altus |
| LUF | KLUF | Luke Air Force Base | Glendale |
| LVM | KLVM | Mission Field | Livingston |
| LVS | KLVS | Las Vegas Municipal Airport | Las Vegas |
| LWM | KLWM | Lawrence Municipal Airport | Lawrence |
| LWT | KLWT | Lewistown Municipal Airport | Lewistown |
| LYU | KELO | Ely Municipal Airport | Ely |
| MBG | KMBG | Mobridge Municipal Airport | Mobridge |
| MCB | KMCB | McComb-Pike County Airport / John E Lewis Field | McComb |
| MCC | KMCC | McClellan Airfield | Sacramento |
| MCF | KMCF | MacDill Air Force Base | Tampa |
| MDH | KMDH | Southern Illinois Airport | Carbondale |
| MER | KMER | Castle Airport | Merced |
| MFD | KMFD | Mansfield Lahm Regional Airport | Mansfield |
| MFH | K67L | Mesquite Airport | Mesquite |
| MGE | KMGE | Dobbins Air Reserve Base | Marietta |
| MHR | KMHR | Sacramento Mather Airport | Sacramento |
| MHV | KMHV | Mojave Air & Space Port | Mojave |
| MIB | KMIB | Minot Air Force Base | Minot |
| MIE | KMIE | Delaware County Johnson Field | Muncie |
| MIV | KMIV | Millville Municipal Airport | Millville |
| MKC | KMKC | Charles B. Wheeler Downtown Airport | Kansas City |
| MLC | KMLC | Mc Alester Regional Airport | McAlester |
| MLS | KMLS | Miles City Airport - Frank Wiley Field | Miles City |
| MMT | KMMT | Mc Entire Joint National Guard Base | Eastover |
| MMU | KMMU | Morristown Municipal Airport | Morristown |
| MNZ | KHEF | Washington Manassas Harry P. Davis Field | Manassas |
| MOD | KMOD | Modesto City Co-Harry Sham Field | Modesto |
| MPV | KMPV | Edward F Knapp State Airport | Barre |
| MQY | KMQY | Smyrna Airport | Smyrna |
| MRB | KMRB | Eastern WV Regional Airport/Shepherd Field | Martinsburg |
| MTC | KMTC | Selfridge Air National Guard Base Airport | Mount Clemens |
| MTH | KMTH | Florida Keys Marathon International Airport | Marathon |
| MTN | KMTN | Martin State Airport | Baltimore |
| MUI | KMUI | Muir Army Air Field (Fort Indiantown Gap) Airport | Fort Indiantown Gap |
| MUO | KMUO | Mountain Home Air Force Base | Mountain Home |
| MWH | KMWH | Grant County International Airport | Moses Lake |
| MXF | KMXF | Maxwell Air Force Base | Montgomery |
| MYV | KMYV | Yuba County Airport | Marysville |
| NBG | KNBG | New Orleans NAS JRB/Alvin Callender Field | New Orleans |
| NCO | KOQU | Quonset State Airport | North Kingstown |
| NEL | KNEL | Lakehurst Maxfield Field Airport | Lakehurst |
| NEW | KNEW | Lakefront Airport | New Orleans |
| NFL | KNFL | Fallon Naval Air Station | Fallon |
| NGF | PHNG | Kaneohe Bay MCAS (Marion E. Carl Field) Airport | Marine Corps Base Hawaii |
| NGP | KNGP | Naval Air Station Corpus Christi Truax Field | Corpus Christi |
| NGU | KNGU | Norfolk Naval Station (Chambers Field) | Norfolk |
| NHK | KNHK | Patuxent River Naval Air Station (Trapnell Field) | Patuxent River |
| NHZ | KBXM | Brunswick Executive Airport | Brunswick |
| NIP | KNIP | Jacksonville Naval Air Station (Towers Field) | Jacksonville |
| NJK | KNJK | El Centro NAF Airport (Vraciu Field) | El Centro |
| NKX | KNKX | Miramar Marine Corps Air Station - Mitscher Field | San Diego |
| NLC | KNLC | Lemoore Naval Air Station (Reeves Field) Airport | Lemoore |
| NPA | KNPA | Naval Air Station Pensacola Forrest Sherman Field | Pensacola |
| NQA | KNQA | Millington-Memphis Airport | Millington |
| NQI | KNQI | Kingsville Naval Air Station | Kingsville |
| NQX | KNQX | Naval Air Station Key West/Boca Chica Field | Key West |
| NRB | KNRB | Naval Station Mayport / Admiral David L McDonald Field | Jacksonville |
| NSE | KNSE | Whiting Field Naval Air Station - North | Milton |
| NTD | KNTD | Point Mugu Naval Air Station (Naval Base Ventura Co) | Point Mugu |
| NTU | KNTU | Oceana Naval Air Station | Virginia Beach |
| NUQ | KNUQ | Moffett Federal Airfield | Mountain View |
| NUW | KNUW | Whidbey Island Naval Air Station (Ault Field) | Oak Harbor |
| NYG | KNYG | Quantico Marine Corps Airfield / Turner Field | Marine Corps Base Quantico |
| NZY | KNZY | North Island Naval Air Station-Halsey Field | Naval Base Coronado |
| OCA | 07FA | Ocean Reef Club Airport | Key Largo |
| OCN | KOKB | Oceanside Municipal Airport | Oceanside |
| OFF | KOFF | Offutt Air Force Base | Omaha |
| OFK | KOFK | Karl Stefan Memorial Airport | Norfolk |
| OGB | KOGB | Orangeburg Municipal Airport | Orangeburg |
| OLS | KOLS | Nogales International Airport | Nogales |
| OLU | KOLU | Columbus Municipal Airport | Columbus |
| ONO | KONO | Ontario Municipal Airport | Ontario |
| ONP | KONP | Newport Municipal Airport | Newport |
| ORL | KORL | Orlando Executive Airport | Orlando |
| OSH | KOSH | Wittman Regional Airport | Oshkosh |
| OSU | KOSU | The Ohio State University Airport - Don Scott Field | Columbus |
| OTM | KOTM | Ottumwa Regional Airport | Ottumwa |
| OWD | KOWD | Norwood Memorial Airport | Norwood |
| OXR | KOXR | Oxnard Airport | Oxnard |
| OZR | KOZR | Cairns AAF (Fort Rucker) Air Field | Fort Rucker/Ozark |
| PAM | KPAM | Tyndall Air Force Base | Panama City |
| PAO | KPAO | Palo Alto Airport | Palo Alto |
| PAQ | PAAQ | Warren "Bud" Woods Palmer Municipal Airport | Palmer |
| PBF | KPBF | Pine Bluff Regional Airport, Grider Field | Pine Bluff |
| PMD | KPMD | Palmdale Regional Airport / USAF Plant 42 Airport | Palmdale |
| PNC | KPNC | Ponca City Regional Airport | Ponca City |
| PNE | KPNE | Northeast Philadelphia Airport | Philadelphia |
| PNX | KGYI | North Texas Regional Airport Perrin Field | Sherman |
| POB | KPOB | Pope Field | Fort Bragg |
| POE | KPOE | Polk Army Air Field | Fort Polk |
| POU | KPOU | Dutchess County Airport | Poughkeepsie |
| PRB | KPRB | Paso Robles Municipal Airport | Paso Robles |
| PRX | KPRX | Cox Field | Paris |
| PTK | KPTK | Oakland County International Airport | Oakland County |
| PWK | KPWK | Chicago Executive Airport | Chicago |
| PWT | KPWT | Bremerton National Airport | Bremerton |
| PWY | KPNA | Ralph Wenz Field | Pinedale |
| RAL | KRAL | Riverside Municipal Airport | Riverside |
| RBL | KRBL | Red Bluff Municipal Airport | Red Bluff |
| RCA | KRCA | Ellsworth Air Force Base | Rapid City |
| RDG | KRDG | Reading Regional Airport (Carl A Spaatz Field) | Reading |
| RDR | KRDR | Grand Forks Air Force Base | Grand Forks |
| RIL | KRIL | Garfield County Regional Airport | Garfield County |
| RIV | KRIV | March Air Reserve Base | Riverside |
| RME | KRME | Griffiss International Airport | Oneida County |
| RMG | KRMG | Richard B Russell Airport | Rome |
| RND | KRND | Randolph Air Force Base | San Antonio |
| RNH | KRNH | New Richmond Regional Airport | New Richmond |
| RSL | KRSL | Russell Municipal Airport | Russell |
| RUI | KSRR | Sierra Blanca Regional Airport | Ruidoso |
| RVS | KRVS | Tulsa Riverside Airport | Tulsa |
| RWF | KRWF | Redwood Falls Municipal Airport | Redwood Falls |
| RWI | KRWI | Rocky Mount Wilson Regional Airport | Rocky Mount |
| RWL | KRWL | Rawlins Municipal Airport/Harvey Field | Rawlins |
| SAC | KSAC | Sacramento Executive Airport | Sacramento |
| SCH | KSCH | Schenectady County Airport | Schenectady |
| SDM | KSDM | Brown Field Municipal Airport | San Diego |
| SFF | KSFF | Felts Field | Spokane |
| SGH | KSGH | Springfield-Beckley Municipal Airport | Springfield |
| SGR | KSGR | Sugar Land Regional Airport | Greater Houston |
| SKA | KSKA | Fairchild Air Force Base | Spokane |
| SKF | KSKF | Lackland Air Force Base | San Antonio |
| SME | KSME | Lake Cumberland Regional Airport | Somerset |
| SMO | KSMO | Santa Monica Municipal Airport | Southern California |
| SNS | KSNS | Salinas Municipal Airport | Salinas |
| SNY | KSNY | Sidney Municipal Airport Lloyd W Carr Field | Sidney |
| SSC | KSSC | Shaw Air Force Base | Sumter |
| SSF | KSSF | Stinson Municipal Airport | San Antonio |
| SSI | KSSI | St Simons Island Airport | Brunswick |
| STJ | KSTJ | Rosecrans Memorial Airport | St Joseph |
| STP | KSTP | Saint Paul Downtown Holman Field | Saint Paul |
| SUS | KSUS | Spirit of St Louis Airport | St Louis |
| SUU | KSUU | Travis Air Force Base | Fairfield |
| SVN | KSVN | Hunter Army Air Field | Fort Stewart |
| SVW | PASV | Sparrevohn LRRS Airport | Sparrevohn |
| SWD | PAWD | Seward Airport | Seward |
| SXQ | PASX | Soldotna Airport | Soldotna |
| SYA | PASY | Eareckson Air Station | Shemya |
| SZL | KSZL | Whiteman Air Force Base | Knob Noster |
| TCC | KTCC | Tucumcari Municipal Airport | Tucumcari |
| TCL | KTCL | Tuscaloosa National Airport | Tuscaloosa |
| TCM | KTCM | McChord Air Force Base | Tacoma |
| TCS | KTCS | Truth or Consequences Municipal Airport | Truth or Consequences |
| TIK | KTIK | Tinker Air Force Base | Oklahoma City |
| TIX | KTIX | Space Coast Regional Airport | Titusville |
| TKA | PATK | Talkeetna Airport | Talkeetna |
| TLJ | PATL | Tatalina LRRS Airport | Takotna |
| TMB | KTMB | Miami Executive Airport | Miami |
| TOI | KTOI | Troy Municipal Airport at N Kenneth Campbell Field | Troy |
| TOP | KTOP | Philip Billard Municipal Airport | Topeka |
| TPH | KTPH | Tonopah Airport | Tonopah |
| TPL | KTPL | Draughon Miller Central Texas Regional Airport | Temple |
| TRM | KTRM | Jacqueline Cochran Regional Airport | Coachella |
| TTD | KTTD | Portland Troutdale Airport | Portland |
| TVL | KTVL | Lake Tahoe Airport | South Lake Tahoe |
| UKI | KUKI | Ukiah Municipal Airport | Ukiah |
| UOX | KUOX | University Oxford Airport | Oxford |
| VAD | KVAD | Moody Air Force Base | Valdosta |
| VBG | KVBG | Vandenberg Space Force Base | Lompoc |
| VGT | KVGT | North Las Vegas Airport | Las Vegas |
| VIS | KVIS | Visalia Municipal Airport | Visalia |
| VNY | KVNY | Van Nuys Airport | Los Angeles |
| VOK | KVOK | Volk Field | Camp Douglas |
| VPZ | KVPZ | Porter County Municipal Airport | Valparaiso |
| VQQ | KVQQ | Cecil Airport | Jacksonville |
| VTN | KVTN | Miller Field | Valentine |
| WJF | KWJF | General William J Fox Airfield | Lancaster |
| WMC | KWMC | Winnemucca Municipal Airport | Winnemucca |
| WMH | KBPK | Ozark Regional Airport | Mountain Home |
| WRB | KWRB | Robins Air Force Base | Warner Robins |
| WRI | KWRI | Mc Guire Air Force Base | Wrightstown |
| WRL | KWRL | Worland Municipal Airport | Worland |
| WWA | PAWS | Wasilla Airport | Wasilla |
| WWD | KWWD | Cape May County Airport | Cape May |
| WWR | KWWR | West Woodward Airport | Woodward |
| YIP | KYIP | Willow Run Airport | Detroit |
| YKN | KYKN | Chan Gurney Municipal Airport | Yankton |
| YNG | KYNG | Youngstown Warren Regional Airport | Youngstown |
| ZZV | KZZV | Zanesville Municipal Airport | Zanesville |
| AAF | KAAF | Apalachicola Regional Airport | Apalachicola |
| ACB | KACB | Antrim County Airport | Bellaire |
| ADG | KADG | Lenawee County Airport | Adrian |
| ADM | KADM | Ardmore Municipal Airport | Ardmore |
| ADR | KPHH | Robert F Swinnie Airport | Andrews |
| ADS | KADS | Addison Airport | Dallas |
| AEL | KAEL | Albert Lea Municipal Airport | Albert Lea |
| AFF | KAFF | USAF Academy Airfield | Colorado Springs |
| AFN | KAFN | Jaffrey Airfield Silver Ranch Airport | Jaffrey |
| AFO | KAFO | Afton Municipal Airport | Afton |
| AGO | KAGO | Magnolia Municipal Airport / Ralph C Weiser Field | Magnolia |
| AHC | KAHC | Amedee Army Air Field | Herlong |
| AHD | — | Ardmore Downtown Executive Airport | Ardmore |
| AHF | — | Arapahoe Municipal Airport | Arapahoe |
| AHH | KAHH | Amery Municipal Airport | Amery |
| AHM | — | Ashland Municipal Airport Sumner Parker Field | Ashland |
| AID | KAID | Anderson Municipal Darlington Field | Anderson |
| AIK | KAIK | Aiken Regional Airport | Aiken |
| AIO | KAIO | Atlantic Municipal Airport | Atlantic |
| AIV | KAIV | George Downer Airport | Aliceville |
| AIZ | KAIZ | Lee C Fine Memorial Airport | Kaiser Lake Ozark |
| AKO | KAKO | Colorado Plains Regional Airport | Akron |
| ALE | KE38 | Alpine Casparis Municipal Airport | Alpine |
| ALX | KALX | Thomas C Russell Field | Alexander City |
| AMK | K00C | Animas Air Park | Durango |
| AMN | KAMN | Gratiot Community Airport | Alma |
| AMW | KAMW | Ames Municipal Airport | Ames |
| ANP | KANP | Lee Airport | Annapolis |
| ANQ | KANQ | Tri State Steuben County Airport | Angola |
| ANW | KANW | Ainsworth Regional Airport | Ainsworth |
| ANY | KANY | Anthony Municipal Airport | Anthony |
| AOH | KAOH | Lima Allen County Airport | Lima |
| APC | KAPC | Napa County Airport | Napa |
| APH | KAPH | Mary Walker LZ Airport | Bowling Green |
| APT | KAPT | Marion County Airport - Brown Field | Jasper |
| APV | KAPV | Apple Valley Airport | Apple Valley |
| AQY | — | Girdwood-Alyeska Airport | Girdwood |
| ARB | KARB | Ann Arbor Municipal Airport | Washtenaw County |
| ARG | KARG | Walnut Ridge Regional Airport | Walnut Ridge |
| ARV | KARV | Lakeland Airport Noble F Lee Memorial Field | Minocqua |
| ASH | KASH | Nashua Airport / Boire Field | Nashua |
| ASL | KASL | Harrison County Airport | Marshall |
| ASN | KASN | Talladega Municipal Airport | Talladega |
| ASQ | KTMT | Austin Airport | Austin |
| ASX | KASX | John F Kennedy Memorial Airport | Ashland |
| ASY | KASY | Ashley Municipal Airport | Ashley |
| ATE | 80F | Antlers Municipal Airport | Antlers |
| ATO | KUNI | Ohio University Airport | Athens |
| ATS | KATS | Artesia Municipal Airport | Artesia |
| ATU | PAAT | Casco Cove Coast Guard Station | Attu |
| AUM | KAUM | Austin Municipal Airport | Austin |
| AUN | KAUN | Auburn Municipal Airport | Auburn |
| AUO | KAUO | Auburn University Regional Airport | Auburn |
| AUZ | KARR | Aurora Municipal Airport | Chicago |
| AVO | KAVO | Avon Park Executive Airport | Avon Park |
| AVW | KAVQ | Marana Regional Airport | Tucson |
| AVX | KAVX | Catalina Airport | Avalon |
| AWM | KAWM | West Memphis Municipal Airport | West Memphis |
| AXB | 89NY | Maxson Airfield | Alexandria Bay |
| AXG | KAXA | Algona Municipal Airport | Algona |
| AXS | KAXS | Altus Quartz Mountain Regional Airport | Altus |
| AXV | KAXV | Neil Armstrong Airport | Wapakoneta |
| AXX | KAXX | Angel Fire Airport | Angel Fire |
| AYS | KAYS | Waycross Ware County Airport | Waycross |
| BAM | KBAM | Battle Mountain Airport | Battle Mountain |
| BBB | KBBB | Benson Municipal Airport | Benson |
| BBC | KBYY | Bay City Regional Airport | Bay City |
| BBW | KBBW | Broken Bow Municipal Airport | Broken Bow |
| BBX | KLOM | Wings Field | Philadelphia |
| BCB | KBCB | Virginia Tech Montgomery Executive Airport | Blacksburg |
| BCC | Z48 | Bear Creek 3 Airport | Bear Creek |
| BCS | 65LA | Southern Seaplane Airport | Belle Chasse |
| BDF | 3IS8 | Rinkenberger Restricted Landing Area | Bradford |
| BDG | KBDG | Blanding Municipal Airport | Blanding |
| BDX | K00F | Broadus Airport | Broadus |
| BDY | S05 | Bandon State Airport | Bandon |
| BEC | KBEC | Beech Factory Airport | Wichita |
| BEH | KBEH | Southwest Michigan Regional Airport | Benton Harbor |
| BFG | KU07 | Bullfrog Basin Airport | Glen Canyon National Recreation Area |
| BFR | KBFR | Virgil I Grissom Municipal Airport | Bedford |
| BFT | KARW | Beaufort Executive Airport | Lady's Island |
| BGD | KBGD | Hutchinson County Airport | Hutchinson County |
| BGE | KBGE | Decatur County Industrial Air Park | Decatur County |
| BGQ | PAGQ | Big Lake Airport | Big Lake |
| BGT | — | Bagdad Airport | Bagdad |
| BIE | KBIE | Beatrice Municipal Airport | Beatrice |
| BJJ | KBJJ | Wayne County Airport | Wayne County |
| BKD | KBKD | Stephens County Airport | Breckenridge |
| BKT | KBKT | Allen C Perkinson Blackstone Army Air Field | Blackstone |
| BKX | KBKX | Brookings Regional Airport | Brookings |
| BLM | KBLM | Monmouth Executive Airport | Belmar |
| BLU | KBLU | Blue Canyon Nyack Airport | Emigrant Gap |
| BMC | KBMC | Brigham City Regional Airport | Brigham City |
| BML | KBML | Berlin Regional Airport | Berlin |
| BMT | KBMT | Beaumont Municipal Airport | Beaumont |
| BMX | PABM | Big Mountain Airport | Big Mountain |
| BNG | KBNG | Banning Municipal Airport | Banning |
| BNL | KBNL | Barnwell Regional Airport | Barnwell |
| BNW | KBNW | Boone Municipal Airport | Boone |
| BOK | KBOK | Brookings Airport | Brookings |
| BOW | KBOW | Bartow Executive Airport | Bartow |
| BRY | KBRY | Samuels Field | Bardstown |
| BSF | PHSF | Bradshaw Army Airfield | Waimea |
| BSQ | P04 | Bisbee Municipal Airport | Bisbee |
| BSW | AK97 | Boswell Bay Airport | Boswell Bay |
| BTF | KBTF | Skypark Airport | Bountiful |
| BTN | KBBP | Marlboro County Jetport - H E Avent Field Airport | Bennettsville |
| BTP | KBTP | Pittsburgh/Butler Regional Airport | Butler |
| BTY | KBTY | Beatty Airport | Beatty |
| BUB | KBUB | Cram Field | Burwell |
| BUM | KBUM | Butler Memorial Airport | Butler |
| BVO | KBVO | Bartlesville Municipal Airport | Bartlesville |
| BVU | PABG | Beluga Airport | Beluga |
| BVX | KBVX | Batesville Regional Airport | Batesville |
| BWC | KBWC | Brawley Municipal Airport | Brawley |
| BWD | KBWD | Brownwood Regional Airport | Brownwood |
| BWL | KBKN | Blackwell Tonkawa Municipal Airport | Blackwell |
| BWM | KBWW | Bowman Regional Airport | Bowman |
| BXA | KBXA | George R Carr Memorial Air Field | Bogalusa |
| BXK | KBXK | Buckeye Municipal Airport | Buckeye |
| BXS | L08 | Borrego Valley Airport | Borrego Springs |
| BYA | BYA | Boundary Airport | Boundary |
| BYG | KBYG | Johnson County Airport | Buffalo |
| BZF | O85 | Benton Field | Redding |
| BZT | 2TE0 | Eagle Air Park | Brazoria |
| CAD | KCAD | Wexford County Airport | Cadillac |
| CAO | KCAO | Clayton Municipal Airpark | Clayton |
| CBE | KCBE | Greater Cumberland Regional Airport | Cumberland |
| CBF | KCBF | Council Bluffs Municipal Airport | Council Bluffs |
| CBK | KCBK | Shalz Field | Colby |
| CCB | KCCB | Upland-Cable Airport | Upland |
| CCG | E13 | Crane County Airport | Crane |
| CDH | KCDH | Harrell Field | Camden |
| CDK | KCDK | George T Lewis Airport | Cedar Key |
| CDL | AK75 | Candle 2 Airport | Candle |
| CDN | KCDN | Woodward Field | Camden |
| CDW | KCDW | Essex County Airport | Caldwell |
| CEA | KCEA | Cessna Aircraft Field | Wichita |
| CEU | KCEU | Oconee County Regional Airport | Seneca |
| CEV | KCEV | Mettel Field | Connersville |
| CEX | AK13 | Chena Hot Springs Airport | Chena Hot Springs |
| CEY | KCEY | Murray-Calloway County Airport Kyle-Oakley Field | Murray |
| CFD | KCFD | Coulter Field | Bryan |
| CFT | KCFT | Greenlee County Airport | Clifton |
| CFV | KCFV | Coffeyville Municipal Airport | Coffeyville |
| CGE | KCGE | Cambridge Dorchester Airport | Cambridge |
| CGS | KCGS | College Park Airport | Washington metropolitan area |
| CGZ | KCGZ | Casa Grande Municipal Airport | Casa Grande |
| CHK | KCHK | Chickasha Municipal Airport | Chickasha |
| CHL | KLLJ | Challis Airport | Challis |
| CHP | CHP | Circle Hot Springs Airport | Circle Hot Springs |
| CHZ | K2S7 | Chiloquin State Airport | Chiloquin |
| CIC | KCIC | Chico Regional Airport | Chico |
| CIG | KCAG | Craig Moffat Airport | Craig |
| CIL | K29 | Council Airport | Council |
| CIN | KCIN | Arthur N Neu Airport | Carroll |
| CIR | KCIR | Cairo Regional Airport | Cairo |
| CKA | KCKA | Kegelman AF Aux Field | Cherokee |
| CKE | 1O2 | Lampson Field | Lakeport |
| CKK | KCVK | Sharp County Regional Airport | Ash Flat |
| CKM | KCKM | Fletcher Field | Clarksdale |
| CKN | KCKN | Crookston Municipal Kirkwood Field | Crookston |
| CKR | — | Crane Island Airstrip | Crane Island |
| CKU | CKU | Cordova Municipal Airport | Cordova |
| CKV | KCKV | Clarksville–Montgomery County Regional Airport | Clarksville |
| CLG | KC80 | New Coalinga Municipal Airport | Coalinga |
| CLI | KCLI | Clintonville Municipal Airport | Clintonville |
| CLK | KCLK | Clinton Regional Airport | Clinton |
| CLR | KCLR | Cliff Hatfield Memorial Airport | Calipatria |
| CLS | KCLS | Chehalis Centralia Airport | Chehalis |
| CLW | KCLW | Clearwater Air Park | Clearwater |
| CMY | KCMY | Sparta Fort McCoy Airport | Sparta |
| CNE | K1V6 | Fremont County Airport | Penrose |
| CNH | KCNH | Claremont Municipal Airport | Claremont |
| CNK | KCNK | Blosser Municipal Airport | Concordia |
| CNO | KCNO | Chino Airport | Chino |
| CNW | KCNW | TSTC Waco Airport | Waco |
| COA | O22 | Columbia Airport | Columbia |
| COI | KCOI | Merritt Island Airport | Merritt Island |
| COM | KCOM | Coleman Municipal Airport | Coleman |
| COP | KK23 | Cooperstown-Westville Airport | Cooperstown |
| COT | KCOT | Cotulla-La Salle County Airport | Cotulla |
| CPM | KCPM | Compton Woodley Airport | Compton |
| CPS | KCPS | St Louis Downtown Airport | Greater St. Louis |
| CRO | — | Corcoran Airport | Corcoran |
| CRS | KCRS | C David Campbell Field Corsicana Municipal Airport | Corsicana |
| CRT | KCRT | Z M Jack Stell Field | Crossett |
| CRX | KCRX | Roscoe Turner Airport | Corinth |
| CSE | 0CO2 | Crested Butte Airpark | Crested Butte |
| CSM | KCSM | Clinton Sherman Airport | Clinton |
| CSQ | KCSQ | Creston Municipal Airport | Creston |
| CTH | KMQS | Chester County G O Carlson Airport | Coatesville |
| CTK | K7G9 | Canton Municipal Airport | Canton |
| CTO | 3NY8 | Calverton Executive Airpark | Calverton |
| CTW | — | Cottonwood Airport | Cottonwood |
| CTX | KN03 | Cortland County Chase Field | Cortland |
| CTY | KCTY | Cross City Airport | Cross City |
| CTZ | KCTZ | Sampson County Airport | Clinton |
| CUH | KCUH | Cushing Municipal Airport | Cushing |
| CUS | 0NM0 | Columbus Airport | Columbus |
| CWF | KCWF | Chennault International Airport | Lake Charles |
| CWI | KCWI | Clinton Municipal Airport | Clinton |
| CWX | KP33 | Cochise County Airport | Willcox |
| CXC | CXC | Chitina Airport | Chitina |
| CXF | PACX | Coldfoot Airport | Coldfoot |
| CXL | KCXL | Calexico International Airport | Calexico |
| CZC | — | Copper Center 2 Airport | Copper Center |
| CZK | KCZK | Cascade Locks State Airport | Cascade Locks |
| CZN | CZN | Chisana Airport | Chisana |
| CZO | CZO | Chistochina Airport | Chistochina |
| CZT | KCZT | Dimmit County Airport | Carrizo Springs |
| DBN | KDBN | W H 'Bud' Barron Airport | Dublin |
| DBS | KU41 | Dubois Municipal Airport | Dubois |
| DCK | PODC | Dahl Creek Airport | Dahl Creek |
| DCU | KDCU | Pryor Field Regional Airport | Decatur |
| DEH | KDEH | Decorah Municipal Airport | Decorah |
| DFI | KDFI | Defiance Memorial Airport | Defiance |
| DGL | KDGL | Douglas Municipal Airport | Douglas |
| DGN | KNDY | Dahlgren Naval Surface Warfare Center Airport | Naval Surface Warfare Center Dahlgren Division |
| DGW | KDGW | Converse County Airport | Douglas |
| DJN | D66 | Delta Junction Airport | Delta Junction |
| DKK | KDKK | Chautauqua County-Dunkirk Airport | Dunkirk |
| DLL | KDLC | Dillon County Airport | Dillon |
| DLN | KDLN | Dillon Airport | Dillon |
| DMO | KDMO | Sedalia Memorial Airport | Sedalia |
| DNN | KDNN | Dalton Municipal Airport | Dalton |
| DNS | KDNS | Denison Municipal Airport | Denison |
| DNV | KDNV | Vermilion Regional Airport | Danville |
| DPG | KDPG | Michael AAF (Dugway Proving Ground) Airport | Dugway Proving Ground |
| DRE | KDRM | Drummond Island Airport | Drummond Township |
| DRF | 3AK5 | Drift River Airport | Kenai |
| DRU | — | Drummond Airport | Drummond |
| DSV | KDSV | Dansville Municipal Airport | Dansville |
| DTA | KDTA | Delta Municipal Airport | Delta |
| DTH | — | Furnace Creek Airport | Death Valley |
| DTL | KDTL | Detroit Lakes Airport | Detroit Lakes |
| DTN | KDTN | Shreveport Downtown Airport | Shreveport |
| DTX | KTKI | McKinney National Airport | Dallas |
| DUC | KDUC | Halliburton Field | Duncan |
| DUF | 7NC2 | Pine Island Airport | Corolla |
| DVN | KDVN | Davenport Municipal Airport | Davenport |
| DVT | KDVT | Phoenix Deer Valley Airport | Phoenix |
| DWH | KDWH | David Wayne Hooks Memorial Airport | Houston |
| DXE | KMBO | Bruce Campbell Field | Madison |
| DYL | KDYL | Doylestown Airport | Doylestown |
| EAN | KEAN | Phifer Airfield | Wheatland |
| EBS | KEBS | Webster City Municipal Airport | Webster City |
| ECA | — | Iosco County Airport | East Tawas |
| ECS | KECS | Mondell Field | Newcastle |
| EDE | KEDE | Northeastern Regional Airport | Edenton |
| EDK | KEQA | Captain Jack Thomas El Dorado Airport | El Dorado |
| EFK | KEFK | Northeast Kingdom International Airport | Newport |
| EFW | KEFW | Jefferson Municipal Airport | Jefferson |
| EGP | — | Maverick County Memorial International Airport | Eagle Pass |
| EGV | KEGV | Eagle River Union Airport | Eagle River |
| EKI | KEKM | Elkhart Municipal Airport | Elkhart |
| EKX | KEKX | Addington Field / Elizabethtown Regional Airport | Elizabethtown |
| ELA | KELA | Eagle Lake Airport | Eagle Lake |
| ELK | KELK | Elk City Regional Business Airport | Elk City |
| ELN | KELN | Bowers Field | Ellensburg |
| ELZ | KELZ | Wellsville Municipal Airport - Tarantine Field | Wellsville |
| EMM | KEMM | Kemmerer Municipal Airport | Kemmerer |
| EMP | KEMP | Emporia Municipal Airport | Emporia |
| EMT | KEMT | San Gabriel Valley Airport | El Monte |
| ENL | KENL | Centralia Municipal Airport | Centralia |
| EOK | KEOK | Keokuk Municipal Airport | Keokuk |
| EOS | KEOS | Neosho Hugh Robinson Airport | Neosho |
| EPG | NE69 | Browns Airport | Weeping Water |
| EPH | KEPH | Ephrata Municipal Airport | Ephrata |
| ERR | KERR | Errol Airport | Errol |
| ERV | KERV | Kerrville / Kerr County Airport at Louis Schreiner Field | Kerrville |
| ESN | KESN | Easton Airport / Newnam Field | Easton |
| ESO | E14 | Ohkay Owingeh Airport | Española |
| EST | KEST | Estherville Municipal Airport | Estherville |
| ESW | KESW | Easton State Airport | Easton |
| ETB | KETB | West Bend Municipal Airport | West Bend |
| ETN | KETN | Eastland Municipal Airport | Eastland |
| ETS | KEDN | Enterprise Municipal Airport | Enterprise |
| EUE | 05U | Eureka Airport | Eureka |
| EUF | KEUF | Weedon Field | Eufaula |
| EVM | KEVM | Eveleth–Virginia Municipal Airport | Eveleth |
| EWK | KEWK | Newton City-County Airport | Harvey County |
| EYR | O43 | Yerington Municipal Airport | Yerington |
| FAM | KFAM | Farmington Regional Airport | Farmington |
| FBL | KFBL | Faribault Municipal Airport-Liz Wall Strohfus Field | Faribault |
| FBR | KFBR | Fort Bridger Airport | Fort Bridger |
| FBY | KFBY | Fairbury Municipal Airport | Fairbury |
| FCH | KFCH | Fresno Chandler Executive Airport | Fresno |
| FCM | KFCM | Flying Cloud Airport | Minneapolis |
| FCY | KFCY | Forrest City Municipal Airport | Forrest City |
| FDK | KFDK | Frederick Municipal Airport | Frederick |
| FDR | KFDR | Frederick Regional Airport | Frederick |
| FEP | KFEP | Albertus Airport | Freeport |
| FET | KFET | Fremont Municipal Airport | Fremont |
| FFA | KFFA | First Flight Airport | Kill Devil Hills |
| FFL | KFFL | Fairfield Municipal Airport | Fairfield |
| FFM | KFFM | Fergus Falls Municipal Airport - Einar Mickelson Field | Fergus Falls |
| FFT | KFFT | Capital City Airport | Frankfort |
| FID | K0B8 | Elizabeth Field | Fishers Island |
| FIL | KFOM | Fillmore Municipal Airport | Fillmore |
| FKN | KFKN | Franklin Regional Airport | Franklin |
| FLD | KFLD | Fond du Lac County Airport | Fond du Lac |
| FLP | KFLP | Marion County Regional Airport | Flippin |
| FLT | PAFT | Flat Airport | Flat |
| FLV | KFLV | Sherman Army Air Field | Fort Leavenworth |
| FLX | KFLX | Fallon Municipal Airport | Fallon |
| FMH | KFMH | Cape Cod Coast Guard Air Station | Falmouth |
| FMS | KFSW | Fort Madison Municipal Airport | Fort Madison |
| FMU | — | Florence Municipal Airport | Florence |
| FOB | 82CL | Fort Bragg Airport | Fort Bragg |
| FOK | KFOK | Francis S Gabreski Airport | Westhampton Beach |
| FPY | KFPY | Perry-Foley Airport | Perry |
| FRH | KFRH | French Lick Municipal Airport | French Lick |
| FRM | KFRM | Fairmont Municipal Airport | Fairmont |
| FRN | PAFR | Bryant Army Airfield | Fort Richardson |
| FRR | KFRR | Front Royal Warren County Airport | Front Royal |
| FRY | KIZG | Eastern Slopes Regional Airport | Fryeburg |
| FSK | KFSK | Fort Scott Municipal Airport | Fort Scott |
| FSU | KFSU | Fort Sumner Municipal Airport | Fort Sumner |
| FUL | KFUL | Fullerton Municipal Airport | Fullerton |
| FWL | — | Farewell Airport | Farewell |
| FXY | KFXY | Forest City Municipal Airport | Forest City |
| FYM | KFYM | Fayetteville Municipal Airport | Fayetteville |
| GAB | KGAB | Gabbs Airport | Gabbs |
| GAD | KGAD | Northeast Alabama Regional Airport | Gadsden |
| GAG | KGAG | Gage Heibeck Airport | Gage |
| GAI | KGAI | Montgomery County Airpark | Montgomery County |
| GBD | KGBD | Great Bend Municipal Airport | Great Bend |
| GBG | KGBG | Galesburg Regional HW Timmons Airport | Galesburg |
| GBH | PAGB | Galbraith Lake Airport | Galbraith Lake |
| GBR | KGBR | Walter J. Koladza Airport | Great Barrington |
| GCD | 3W7 | Grand Coulee Dam Airport | Electric City |
| GCT | K1Z1 | Grand Canyon Bar Ten Airstrip | Littlefield |
| GCW | K1G4 | Grand Canyon West Airport | Grand Canyon West |
| GCY | KGCY | Greeneville Municipal Airport | Greeneville |
| GDC | KGYH | Donaldson Field Airport | Greenville |
| GDM | KGDM | Gardner Municipal Airport | Gardner |
| GDW | KGDW | Gladwin Zettel Memorial Airport | Gladwin |
| GED | KGED | Delaware Coastal Airport | Georgetown |
| GEY | KGEY | South Big Horn County Airport | Greybull |
| GFD | KGFD | Pope Field | Greenfield |
| GGE | KGGE | Georgetown County Airport | Georgetown |
| GHM | KGHM | Centerville Municipal Airport | Centerville |
| GIF | KGIF | Winter Haven Regional Airport - Gilbert Field | Winter Haven |
| GKT | KGKT | Gatlinburg-Pigeon Forge Airport | Gatlinburg |
| GLB | — | San Carlos Apache Airport | Globe |
| GLE | KGLE | Gainesville Municipal Airport | Gainesville |
| GLR | KGLR | Gaylord Regional Airport | Gaylord |
| GLW | KGLW | Glasgow Municipal Airport | Glasgow |
| GMT | PAGZ | Granite Mountain Air Station | Granite Mountain |
| GMV | UT25 | Monument Valley Airport | Oljato-Monument Valley |
| GNF | — | Gansner Field | Quincy |
| GNG | KGNG | Gooding Municipal Airport | Gooding |
| GNT | KGNT | Grants-Milan Municipal Airport | Grants |
| GOK | KGOK | Guthrie-Edmond Regional Airport | Guthrie |
| GOL | K4S1 | Gold Beach Municipal Airport | Gold Beach |
| GPZ | KGPZ | Grand Rapids Itasca Co-Gordon Newstrom field | Grand Rapids |
| GQQ | KGQQ | Galion Municipal Airport | Galion |
| GRD | KGRD | Greenwood County Airport | Greenwood |
| GRE | KGRE | Greenville Airport | Greenville |
| GRM | KCKC | Grand Marais Cook County Airport | Grand Marais |
| GRN | KGRN | Gordon Municipal Airport | Gordon |
| GSH | KGSH | Goshen Municipal Airport | Goshen |
| GTG | KGTG | Grantsburg Municipal Airport | Grantsburg |
| GTP | — | Grants Pass Airport | Grants Pass |
| GTY | KW05 | Gettysburg Regional Airport | Gettysburg |
| GUF | KJKA | Jack Edwards National Airport | Gulf Shores |
| GVE | KGVE | Gordonsville Municipal Airport | Gordonsville |
| GVL | KGVL | Lee Gilmer Memorial Airport | Gainesville |
| GVT | KGVT | Majors Airport | Greenville |
| GWS | KGWS | Sumers Airpark | Glenwood Springs |
| GWV | WV66 | Glendale Fokker Field | Glendale |
| GXY | KGXY | Greeley–Weld County Airport | Greeley |
| GYR | KGYR | Phoenix Goodyear Airport | Goodyear |
| HAB | KHAB | Marion County Rankin Fite Airport | Hamilton |
| HAF | KHAF | Half Moon Bay Airport | San Francisco |
| HAI | KHAI | Three Rivers Municipal Dr Haines Airport | Three Rivers |
| HAO | KHAO | Butler Co Regional Airport - Hogan Field | Hamilton |
| HAR | KCXY | Capital City Airport | Harrisburg |
| HBB | NM83 | Industrial Airpark | Hobbs |
| HBK | P14 | Holbrook Municipal Airport | Holbrook |
| HCA | KBPG | Big Spring Mc Mahon-Wrinkle Airport | Big Spring |
| HCC | K1B1 | Columbia County Airport | Hudson |
| HCW | KCQW | Cheraw Municipal Airport/Lynch Bellinger Field | Cheraw |
| HDE | KHDE | Brewster Field | Holdrege |
| HDH | PHDH | Kawaihapai Airfield | Mokuleia |
| HED | AK33 | Herendeen Bay Airport | Herendeen Bay |
| HEE | KHEE | Thompson-Robbins Airport | Helena-West Helena |
| HES | KHRI | Hermiston Municipal Airport | Hermiston |
| HEZ | KHEZ | Natchez–Adams County Airport / Hardy-Anders Field | Natchez |
| HFF | KHFF | Mackall Army Air Field | Hoffman |
| HGZ | 2AK6 | Hog River Airport | Hogatza |
| HHI | PHHI | Wheeler Army Airfield | Wahiawa |
| HIE | KHIE | Mount Washington Regional Airport | Whitefield |
| HKA | KHKA | Blytheville Municipal Airport | Blytheville |
| HKB | — | Healy Lake Airport | Healy Lake |
| HKS | KHKS | Hawkins Field | Jackson |
| HLB | KHLB | Batesville Airport | Batesville |
| HLC | KHLC | Hill City Municipal Airport | Hill City |
| HLI | KCVH | Hollister Municipal Airport | Hollister |
| HLM | — | Park Township Airport | Holland |
| HMT | KHMT | Hemet Ryan Airport | Hemet |
| HNB | KHNB | Huntingburg Airport | Huntingburg |
| HNC | KHSE | Billy Mitchell Airport | Hatteras |
| HPT | KHPT | Hampton Municipal Airport | Hampton |
| HPV | HI01 | Princeville Airport | Hanalei |
| HPY | KHPY | Baytown Airport | Baytown |
| HSB | KHSB | Harrisburg-Raleigh Airport | Harrisburg |
| HSH | KHND | Henderson Executive Airport | Las Vegas |
| HSI | KHSI | Hastings Municipal Airport | Hastings |
| HSP | KHSP | Ingalls Field | Hot Springs |
| HTH | KHTH | Hawthorne Industrial Airport | Hawthorne |
| HTL | KHTL | Roscommon County - Blodgett Memorial Airport | Houghton Lake |
| HTO | KJPX | Town of East Hampton Airport | East Hampton |
| HTW | KHTW | Lawrence County Airpark | Chesapeake |
| HUD | K0K7 | Humboldt Municipal Airport | Humboldt |
| HUJ | KHHW | Stan Stamper Municipal Airport | Hugo |
| HUM | KHUM | Houma Terrebonne Airport | Houma |
| HVE | KHVE | Hanksville Airport | Hanksville |
| HVS | KHVS | Hartsville Regional Airport | Hartsville |
| HWD | KHWD | Hayward Executive Airport | Hayward |
| HZL | KHZL | Hazleton Municipal Airport | Hazleton |
| ICL | KICL | Schenck Field | Clarinda |
| ICS | KU70 | Cascade Airport | Cascade |
| ICY | 19AK | Icy Bay Airport | Icy Bay |
| IDG | KIDG | Ida Grove Municipal Airport | Ida Grove |
| IDH | KGIC | Idaho County Airport | Grangeville |
| IDI | KIDI | Indiana County–Jimmy Stewart Airport | Indiana |
| IDP | KIDP | Independence Municipal Airport | Independence |
| IFA | KIFA | Iowa Falls Municipal Airport | Iowa Falls |
| IJX | KIJX | Jacksonville Municipal Airport | Jacksonville |
| IKB | KUKF | Wilkes County Airport | North Wilkesboro |
| ILE | KILE | Skylark Field | Killeen |
| ILL | KBDH | Willmar Municipal Airport John L Rice Field (2006) | Willmar |
| IML | KIML | Imperial Municipal Airport | Imperial |
| IMM | KIMM | Immokalee Regional Airport | Immokalee |
| INS | KINS | Creech Air Force Base | Indian Springs |
| IOW | KIOW | Iowa City Municipal Airport | Iowa City |
| IRB | — | Iraan Municipal Airport | Iraan |
| IRS | KIRS | Kirsch Municipal Airport | Sturgis |
| ISQ | KISQ | Schoolcraft County Airport | Manistique |
| ISS | KIWI | Wiscasset Airport | Wiscasset |
| ISW | KISW | Alexander Field South Wood County Airport | Wisconsin Rapids |
| IUA | KIUA | Canandaigua Airport | Ontario County IDA |
| IWS | KIWS | West Houston Airport | Houston |
| IYK | KIYK | Inyokern Airport | Inyokern |
| JAS | KJAS | Jasper County Airport Bell Field | Jasper |
| JCI | KIXD | New Century AirCenter Airport | Olathe |
| JCY | 0TE7 | LBJ Ranch Airport | Stonewall |
| JDA | KGCD | Grant County Regional Airport / Ogilvie Field | John Day |
| JDN | KJDN | Jordan Airport | Jordan |
| JEF | KJEF | Jefferson City Memorial Airport | Jefferson City |
| JKV | KJSO | Cherokee County Airport | Jacksonville |
| JLA | — | Quartz Creek Airport | Cooper Landing |
| JOT | KJOT | Joliet Regional Airport | Joliet |
| JVI | 47N | Central Jersey Regional Airport | Manville |
| JVL | KJVL | Southern Wisconsin Regional Airport | Janesville |
| KCL | KCL | Chignik Lagoon Airport | Chignik Lagoon |
| KCR | KCR | Colorado Creek Airport | Colorado Creek |
| KDK | PAKD | Kodiak Municipal Airport | Kodiak |
| KEK | KEK | Ekwok Airport | Ekwok |
| KGZ | KGZ | Glacier Creek Airport | Glacier Creek |
| KIC | KKIC | Mesa Del Rey Airport | King City |
| KIP | KCWC | Kickapoo Downtown Airport | Wichita Falls |
| KKK | 1KC | Kalakaket Creek AS Airport | Kalakaket Creek |
| KKT | K50I | Kentland Municipal Airport | Kentland |
| KKU | KKU | Ekuk Airport | Ekuk |
| KLL | 9Z8 | Levelock Airport | Levelock |
| KNB | KKNB | Kanab Municipal Airport | Kanab |
| KNT | KTKX | Kennett Memorial Airport | Kennett |
| KPT | 06U | Jackpot Airport/Hayden Field | Jackpot |
| KYO | X39 | Tampa North Aero Park Airport | Tampa |
| LAM | KLAM | Los Alamos Airport | Los Alamos |
| LCI | KLCI | Laconia Municipal Airport | Laconia / Gilford |
| LCQ | KLCQ | Lake City Gateway Airport | Lake City |
| LDJ | KLDJ | Linden Airport | Linden |
| LDM | KLDM | Mason County Airport | Ludington |
| LEM | KLEM | Lemmon Municipal Airport | Lemmon |
| LEW | KLEW | Auburn Lewiston Municipal Airport | Auburn |
| LFN | KLHZ | Triangle North Executive Airport | Louisburg |
| LGC | KLGC | LaGrange Callaway Airport | LaGrange |
| LGD | KLGD | La Grande/Union County Airport | La Grande |
| LGF | KLGF | Laguna Army Airfield | Yuma Proving Ground |
| LHV | KLHV | William T. Piper Memorial Airport | Lock Haven |
| LIC | KLIC | Limon Municipal Airport | Limon |
| LIV | 4AK | Livengood Camp Airport | Livengood |
| LIY | KLHW | MidCoast Regional Airport at Wright Army Airfield | Hinesville |
| LIZ | ME16 | Loring International Airport | Limestone |
| LKK | PAKL | Kulik Lake Airport | Kulik Lake |
| LKP | KLKP | Lake Placid Airport | Lake Placid |
| LKV | KLKV | Lake County Airport | Lakeview |
| LLX | KCDA | Caledonia County Airport | Caledonia County |
| LLY | KVAY | South Jersey Regional Airport | Mount Holly |
| LMS | KLMS | Louisville Winston County Airport | Louisville |
| LNA | KLNA | Palm Beach County Park Airport | West Palm Beach |
| LNI | PALN | Point Lonely Short Range Radar Site Airfield | Point Lonely |
| LNN | KLNN | Lake County Executive Airport | Willoughby |
| LNP | KLNP | Lonesome Pine Airport | Wise |
| LNR | KLNR | Tri-County Regional Airport | Lone Rock |
| LOT | KLOT | Lewis University Airport | Chicago |
| LOW | KLKU | Louisa County Airport / Freeman Field | Louisa |
| LPC | KLPC | Lompoc Airport | Lompoc |
| LPO | KPPO | La Porte Municipal Airport | La Porte |
| LQK | KLQK | Pickens County Airport | Pickens |
| LRJ | KLRJ | Le Mars Municipal Airport | Le Mars |
| LSB | KLSB | Lordsburg Municipal Airport | Lordsburg |
| LSK | KLSK | Lusk Municipal Airport | Lusk |
| LSN | KLSN | Los Banos Municipal Airport | Los Banos |
| LTW | — | St. Mary's County Regional Airport | California |
| LUL | KLUL | Hesler Noble Field | Laurel |
| LVD | 2AK | Lime Village Airport | Lime Village |
| LVK | KLVK | Livermore Municipal Airport | Livermore |
| LVL | KLVL | Brunswick Municipal Airport | Lawrenceville |
| LWC | KLWC | Lawrence Municipal Airport | Lawrence |
| LWL | KLWL | Wells Municipal Airport/Harriet Field | Wells |
| LWV | KLWV | Lawrenceville Vincennes International Airport | Lawrenceville |
| LXN | KLXN | Jim Kelly Field | Lexington |
| LXV | KLXV | Lake County Airport | Leadville |
| LYO | KLYO | Lyons-Rice County Municipal Airport | Lyons |
| LZU | KLZU | Gwinnett County Briscoe Field | Lawrenceville |
| MAC | KMAC | Macon Downtown Airport | Macon |
| MAE | KMAE | Madera Municipal Airport | Madera |
| MAW | KMAW | Malden Regional Airport | Malden |
| MBY | KMBY | Omar N Bradley Airport | Moberly |
| MCD | KMCD | Mackinac Island Airport | Mackinac Island |
| MCL | PAIN | Denali National Park Airport | Denali Park |
| MDD | KMDD | Midland Airpark | Midland |
| MDF | KMDZ | Taylor County Airport | Medford |
| MDJ | KS33 | Madras Municipal Airport | Madras |
| MDN | KIMS | Madison Regional Airport | Madison |
| MDO | PAMD | Middleton Island Airport | Middleton Island |
| MEJ | KGKJ | Port Meadville Airport | Meadville |
| MEO | KMQI | Dare County Regional Airport | Manteo |
| MEV | KMEV | Minden-Tahoe Airport | Minden |
| MFI | KMFI | Marshfield Municipal Airport | Marshfield |
| MFV | KMFV | Accomack County Airport | Melfa |
| MGI | — | National Wildlife Refuge Airport | Matagorda Island |
| MGJ | KMGJ | Orange County Airport | Montgomery |
| MGR | KMGR | Moultrie Municipal Airport | Moultrie |
| MGY | KMGY | Dayton-Wright Brothers Airport | Dayton |
| MHE | KMHE | Mitchell Municipal Airport | Mitchell |
| MHL | KMHL | Marshall Memorial Municipal Airport | Marshall |
| MHN | — | Hooker County Airport | Mullen |
| MHS | K1O6 | Dunsmuir Muni-Mott Airport | Dunsmuir |
| MIC | KMIC | Crystal Airport | Minneapolis |
| MIF | E01 | Roy Hurd Memorial Airport | Monahans |
| MIO | KMIO | Miami Municipal Airport | Miami |
| MIQ | KMLE | Millard Airport | Omaha |
| MIT | KMIT | Shafter Airport - Minter Field | Shafter |
| MIW | KMIW | Marshalltown Municipal Airport | Marshalltown |
| MJQ | KMJQ | Jackson Municipal Airport | Jackson |
| MJX | KMJX | Ocean County Airport | Toms River |
| MKO | KMKO | Muskogee-Davis Regional Airport | Muskogee |
| MKT | KMKT | Mankato Regional Airport | Mankato |
| MLD | KMLD | Malad City Airport | Malad City |
| MLF | KMLF | Milford Municipal-Ben and Judy Briscoe Field | Milford |
| MLJ | KMLJ | Baldwin County Regional Airport | Milledgeville |
| MLK | KM75 | Malta Airport | Malta |
| MLT | KMLT | Millinocket Municipal Airport | Millinocket |
| MMI | KMMI | McMinn County Airport | Athens |
| MML | KMML | Southwest Minnesota Regional Airport - Marshall/Ryan Field | Marshall |
| MMN | K6B6 | Minute Man Air Field | Stow |
| MMS | KMMS | Selfs Airport | Marks |
| MNM | KMNM | Menominee–Marinette Twin County Airport | Menominee |
| MNN | KMNN | Marion Municipal Airport | Marion |
| MOP | KMOP | Mount Pleasant Municipal Airport | Mount Pleasant |
| MOR | KMOR | Morristown Regional Airport | Morristown |
| MOS | — | Moses Point Airport | Elim |
| MOX | KMOX | Morris Municipal Airport Charlie Schmidt Field | Morris |
| MPJ | KMPJ | Petit Jean Park Airport | Morrilton |
| MPO | KMPO | Pocono Mountains Municipal Airport | Mount Pocono |
| MPR | KMPR | Mc Pherson Airport | Mc Pherson |
| MPS | KOSA | Mount Pleasant Regional Airport | Mount Pleasant |
| MPZ | KMPZ | Mount Pleasant Municipal Airport | Mount Pleasant |
| MQB | KMQB | Macomb Municipal Airport | Macomb |
| MQW | KMQW | Telfair Wheeler Airport | McRae |
| MRC | KMRC | Maury County Airport | Columbia |
| MRF | KMRF | Marfa Municipal Airport | Marfa |
| MRK | KMKY | Marco Island Executive Airport | Marco Island |
| MRN | KMRN | Foothills Regional Airport | Morganton |
| MSC | KFFZ | Falcon Field | Mesa |
| MSV | KMSV | Sullivan County International Airport | Monticello |
| MTO | KMTO | Coles County Memorial Airport | Mattoon |
| MTW | KMTW | Manitowoc County Airport | Manitowoc |
| MTX | MTF | Metro Field | Fairbanks |
| MUL | KMUL | Spence Airport | Moultrie |
| MUT | KMUT | Muscatine Municipal Airport | Muscatine |
| MVC | KMVC | Monroe County Aeroplex Airport | Monroeville |
| MVE | KMVE | Montevideo Chippewa County Airport | Montevideo |
| MVL | KMVL | Morrisville-Stowe State Airport | Morrisville |
| MVM | — | Kayenta Airport | Kayenta |
| MVN | KMVN | Mount Vernon Outland Airport | Mount Vernon |
| MVW | KBVS | Skagit Regional Airport | Burlington |
| MWC | KMWC | Lawrence J Timmerman Airport | Milwaukee |
| MWM | KMWM | Windom Municipal Airport | Windom |
| MWO | KMWO | Middletown Regional Airport | Middletown |
| MXA | KMXA | Manila Municipal Airport | Manila |
| MXC | — | Monticello Airport | Monticello |
| MXE | KMEB | Laurinburg Maxton Airport | Maxton |
| MXO | KMXO | Monticello Regional Airport | Monticello |
| MXY | PAMX | Mc Carthy Airport | McCarthy |
| MYF | KMYF | Montgomery-Gibbs Executive Airport | San Diego |
| MYH | KL41 | Marble Canyon Airport | Marble Canyon |
| MZJ | KMZJ | Pinal Airpark | Marana |
| MZZ | KMZZ | Marion Municipal Airport | Marion |
| NEN | KNEN | Whitehouse Naval Outlying Field | Jacksonville |
| NGW | KNGW | Cabaniss Field Naval Outlying Landing Field | Corpus Christi |
| NHX | KNBJ | Naval Outlying Field Barin | Foley |
| NIN | NIN | Ninilchik Airport | Ninilchik |
| NIR | KTX2 | Chase Field Industrial Airport | Beeville |
| NLE | 3TR | Jerry Tyler Memorial Airport | Niles |
| NLN | — | Kneeland Airport | Kneeland |
| NNK | — | Naknek Airport | Naknek |
| NNL | PANO | Nondalton Airport | Nondalton |
| NOT | KDVO | Marin County Airport - Gnoss Field | Novato |
| NPH | KU14 | J. Randy McKnight Nephi Municipal Airport | Nephi |
| NRI | 3O9 | Grand Lake Regional Airport | Afton |
| NRS | KNRS | Naval Outlying Field Imperial Beach (Ream Field) | Naval Base Coronado |
| NSL | KDVP | Slayton Municipal Airport | Slayton |
| NTJ | 41U | Manti-Ephraim Airport | Manti |
| NVD | KNVD | Nevada Municipal Airport | Nevada |
| NVN | — | Nervino Airport | Beckwourth |
| NWH | K2B3 | Parlin Field | Newport |
| OAR | KOAR | Marina Municipal Airport | Marina |
| OBE | KOBE | Okeechobee County Airport | Okeechobee |
| OCF | KOCF | Ocala International Airport - Jim Taylor Field | Ocala |
| OCH | KOCH | A L Mangham Jr. Regional Airport | Nacogdoches |
| OCW | KOCW | Warren Field | Washington |
| ODC | O27 | Oakdale Airport | Oakdale |
| ODM | K2G4 | Garrett County Airport | Accident |
| ODT | KODO | Odessa Schlemeyer Field | Odessa |
| ODW | KOKH | AJ Eisenberg Airport | Oak Harbor |
| OEA | KOEA | O'Neal Airport | Vincennes |
| OEO | KOEO | L O Simenstad Municipal Airport | Osceola |
| OGA | KOGA | Ogallala Municipal Airport Searle Field | Ogallala |
| OIC | KOIC | Lt Warren Eaton Airport | Norwich |
| OJC | KOJC | Johnson County Executive Airport | Olathe |
| OKK | KOKK | Kokomo Municipal Airport | Kokomo |
| OKM | KOKM | Okmulgee Regional Airport | Okmulgee |
| OKS | KOKS | Garden County Airport/King Rhiley Field | Oshkosh |
| OLD | KOLD | Dewitt Field - Old Town Municipal Airport | Old Town |
| OLE | KOLE | Cattaraugus County-Olean Airport | Olean |
| OLV | KOLV | Olive Branch Airport | Olive Branch |
| OLY | KOLY | Olney Noble Airport | Olney-Noble |
| OMK | KOMK | Omak Airport | Omak |
| ONA | KONA | Winona Municipal Airport Max Conrad Field | Winona |
| ONH | — | Albert S Nader Regional Airport | Oneonta |
| ONL | KONL | O'Neill Municipal Airport–John L Baker Field | O'Neill |
| ONM | KONM | Socorro Municipal Airport | Socorro |
| ONY | KONY | Olney Municipal Airport | Olney |
| OOA | KOOA | Oskaloosa Municipal Airport | Cedar |
| OPL | KOPL | St Landry Parish Ahart Field | Opelousas |
| OSB | K15 | Grand Glaize Osage Beach Airport | Osage Beach |
| OSC | KOSC | Oscoda Wurtsmith Airport | Oscoda |
| OSX | KOSX | Kosciusko Attala County Airport | Kosciusko |
| OTG | KOTG | Worthington Municipal Airport | Worthington |
| OTK | KTMK | Tillamook Airport | Tillamook |
| OTN | KI20 | Ed-Air Airport | Oaktown |
| OUN | KOUN | University of Oklahoma Westheimer Airport | Norman |
| OVE | KOVE | Oroville Municipal Airport | Oroville |
| OWA | KOWA | Owatonna Degner Regional Airport | Owatonna |
| OWK | KOWK | Central Maine/Norridgewock Airport | Norridgewock |
| OXC | KOXC | Waterbury Oxford Airport | Oxford |
| OXD | KOXD | Miami University Airport | Oxford |
| OZA | KOZA | Ozona Municipal Airport | Ozona |
| PAK | PHPA | Port Allen Airport | Hanapepe |
| PCA | PAOC | Portage Creek Airport | Portage Creek |
| PCD | KPDC | Prairie Du Chien Municipal Airport | Prairie du Chien |
| PCT | 39N | Princeton Airport | Princeton |
| PCU | M13 | Poplarville Pearl River County Airport | Poplarville |
| PEQ | KPEQ | Pecos Municipal Airport | Pecos |
| PFC | KPFC | Pacific City State Airport | Pacific City |
| PGC | W99 | Grant County Airport | Petersburg |
| PGL | KPQL | Trent Lott International Airport | Pascagoula |
| PGO | KPSO | Stevens Field | Pagosa Springs |
| PGR | KPGR | Kirk Field | Paragould |
| PGS | KL37 | Grand Canyon Caverns Airport | Peach Springs |
| PHD | KPHD | Harry Clever Field | New Philadelphia |
| PHK | KPHK | Palm Beach County Glades Airport | Pahokee |
| PHN | KPHN | St Clair County International Airport | Port Huron |
| PHP | KPHP | Philip Airport | Philip |
| PHT | KPHT | Henry County Airport | Paris |
| PIM | KPIM | Harris County Airport | Pine Mountain |
| PJB | KPAN | Payson Airport | Payson |
| PKD | KPKD | Park Rapids Municipal Airport Konshok Field | Park Rapids |
| PKF | KPKF | Park Falls Municipal Airport | Park Falls |
| PLK | KPLK | M. Graham Clark Downtown Airport | Branson |
| PLR | KPLR | St Clair County Airport | Pell City |
| PLY | KC65 | Plymouth Municipal Airport | Plymouth |
| PMB | KPMB | Pembina Municipal Airport | Pembina |
| PMH | KPMH | Greater Portsmouth Regional Airport | Portsmouth |
| PML | PAAL | Port Moller Airport | Cold Bay |
| PNN | KPNN | Princeton Municipal Airport | Princeton |
| PNU | U55 | Panguitch Municipal Airport | Panguitch |
| POC | KPOC | Brackett Field | La Verne |
| POF | KPOF | Poplar Bluff Municipal Airport | Poplar Bluff |
| POH | KPOH | Pocahontas Municipal Airport | Pocahontas |
| POY | KPOY | Powell Municipal Airport | Powell |
| PPA | KPPA | Perry Lefors Field | Pampa |
| PPC | PAPR | Prospect Creek Airport | Prospect Creek |
| PPF | KPPF | Tri-City Airport | Parsons |
| PPM | KPMP | Pompano Beach Airpark | Pompano Beach |
| PRO | KPRO | Perry Municipal Airport | Perry |
| PRW | — | Prentice Airport | Prentice |
| PRZ | S39 | Prineville Airport | Prineville |
| PSB | KPSB | Mid-State Regional Airport | Philipsburg |
| PSF | KPSF | Pittsfield Municipal Airport | Pittsfield |
| PSK | KPSK | New River Valley Airport | New River Valley |
| PSN | KPSN | Palestine Municipal Airport | Palestine |
| PSX | KPSX | Palacios Municipal Airport | Palacios |
| PTB | KPTB | Dinwiddie County Airport | Petersburg |
| PTN | KPTN | Harry P Williams Memorial Airport | Patterson |
| PTS | KPTS | Atkinson Municipal Airport | Pittsburg |
| PTT | KPTT | Pratt Regional Airport | Pratt |
| PTV | KPTV | Porterville Municipal Airport | Porterville |
| PTW | KPTW | Heritage Field | Pottstown |
| PUC | KPUC | Carbon County Regional Airport / Buck Davis Field | Price |
| PVC | KPVC | Provincetown Municipal Airport | Provincetown |
| PVF | KPVF | Placerville Airport | Placerville |
| PVL | KPBX | Pike County Airport Hatcher Field | Pikeville |
| PVW | KPVW | Hale County Airport | Plainview |
| PWA | KPWA | Wiley Post Airport | Oklahoma City |
| PWD | KPWD | Sher-Wood Airport | Plentywood |
| PXL | P10 | Polacca Airport | Polacca |
| PYM | KPYM | Plymouth Municipal Airport | Plymouth County |
| PYS | CA92 | Paradise Skypark Airport | Paradise |
| RAC | KRAC | John H Batten Airport | Racine |
| RBD | KRBD | Dallas Executive Airport | Dallas |
| RBF | KL35 | Big Bear City Airport | Big Bear |
| RBG | KRBG | Roseburg Regional Airport | Roseburg |
| RBK | KF70 | French Valley Airport | Murrieta |
| RBW | KRBW | Lowcountry Regional Airport | Walterboro |
| RCK | KRCK | H H Coffield Regional Airport | Rockdale |
| RCR | KRCR | Fulton County Airport | Rochester |
| RDB | PADG | Red Dog Airport | Red Dog |
| RED | KRVL | Mifflin County Airport | Lewistown |
| REE | 8XS8 | Reese Airpark | Lubbock |
| REO | KREO | Rome State Airport | Rome |
| RFG | KRFG | Rooke Field | Refugio |
| RFK | 5MS1 | Rollang Field | Rolling Fork |
| RGR | F23 | Ranger Municipal Airport | Ranger |
| RHV | KRHV | Reid-Hillview Airport of Santa Clara County | San Jose |
| RID | KRID | Richmond Municipal Airport | Richmond |
| RIE | KRPD | Rice Lake Regional Airport - Carl's Field | Rice Lake |
| RIF | KRIF | Richfield Municipal Airport | Richfield |
| RIR | KRIR | Flabob Airport | Riverside |
| RKH | KUZA | Rock Hill - York County Airport | Rock Hill |
| RKP | KRKP | Aransas County Airport | Rockport |
| RKR | KRKR | Robert S Kerr Airport | Poteau |
| RKW | KRKW | Rockwood Municipal Airport | Rockwood |
| RLA | K07 | Rolla Downtown Airport | Rolla |
| RLD | KRLD | Richland Airport | Richland |
| RMY | KMPI | Mariposa Yosemite Airport | Mariposa |
| RNC | KRNC | Warren County Memorial Airport | Warren County |
| RNT | KRNT | Renton Municipal Airport | Renton |
| RNZ | KRZL | Jasper County Airport | Jasper County |
| ROF | K1O5 | Montague-Yreka Rohrer Field | Montague |
| ROG | KROG | Rogers Municipal Airport-Carter Field | Rogers |
| ROL | — | Roosevelt Municipal Airport | Roosevelt |
| ROX | KROX | Roseau Municipal Rudy Billberg Field | Roseau |
| RPX | KRPX | Roundup Airport | Roundup |
| RQO | KRQO | El Reno Regional Airport | El Reno |
| RRL | KRRL | Merrill Municipal Airport | Merrill |
| RRT | KRRT | Warroad International Memorial Airport | Warroad |
| RSN | KRSN | Ruston Regional Airport | Ruston |
| RTL | K0F3 | Spirit Lake Municipal Airport | Okoboji |
| RTN | KRTN | Raton Municipal Airport / Crews Field | Raton |
| RVR | KU34 | Green River Municipal Airport | Green River |
| RXE | KRXE | Rexburg Madison County Airport | Rexburg |
| SAA | KSAA | Shively Field | Saratoga |
| SAD | KSAD | Safford Regional Airport | Safford |
| SAR | KSAR | Sparta Community Airport - Hunter Field | Sparta |
| SAS | KSAS | Salton Sea Airport | Salton City |
| SBM | KSBM | Sheboygan County Memorial Airport | Sheboygan Falls |
| SBO | 44U | Salina Gunnison Airport | Salina |
| SBS | KSBS | Steamboat Springs Bob Adams Field | Steamboat Springs |
| SBX | KSBX | Shelby Airport | Shelby |
| SCB | KSCB | Scribner State Airport | Scribner |
| SCF | KSDL | Scottsdale Airport | Scottsdale |
| SDX | KSEZ | Sedona Airport | Sedona |
| SEE | KSEE | Gillespie Field | San Diego |
| SEF | KSEF | Sebring Regional Airport | Sebring |
| SEG | KSEG | Penn Valley Airport | Selinsgrove |
| SEM | KSEM | Craig Field | Selma |
| SEP | KSEP | Stephenville Clark Regional Airport | Stephenville |
| SER | KSER | Freeman Municipal Airport | Seymour |
| SFM | KSFM | Sanford Seacoast Regional Airport | Sanford |
| SFZ | KSFZ | North Central State Airport | Pawtucket |
| SGT | KSGT | Stuttgart Municipal Airport / Carl Humphrey Field | Stuttgart |
| SHN | KSHN | Sanderson Field | Shelton |
| SHX | PAHX | Shageluk Airport | Shageluk |
| SIK | KSIK | Sikeston Memorial Municipal Airport | Sikeston |
| SIV | KSIV | Sullivan County Airport | Sullivan |
| SIY | KSIY | Siskiyou County Airport | Montague |
| SJN | KSJN | St Johns Industrial Air Park | St. Johns |
| SKW | PASW | Skwentna Airport | Skwentna |
| SLB | KSLB | Storm Lake Municipal Airport | Storm Lake |
| SLG | KSLG | Smith Field | Siloam Springs |
| SLO | KSLO | Salem–Leckrone Airport | Salem |
| SLR | KSLR | Sulphur Springs Municipal Airport | Sulphur Springs |
| SLT | KANK | Salida Airport - Harriet Alexander Field | Salida |
| SMD | KSMD | Smith Field | Fort Wayne |
| SMU | PASP | Sheep Mountain Airport | Sheep Mountain |
| SNK | KSNK | Winston Field | Snyder |
| SNL | KSNL | Shawnee Regional Airport | Shawnee |
| SOL | AK26 | Solomon State Field | Solomon |
| SOP | KSOP | Moore County Airport | Carthage |
| SPA | KSPA | Spartanburg Downtown Memorial Airport | Spartanburg |
| SPF | KSPF | Black Hills Airport-Clyde Ice Field | Spearfish |
| SPG | KSPG | Albert Whitted Airport | St. Petersburg |
| SPW | KSPW | Spencer Municipal Airport | Spencer |
| SPZ | KASG | Springdale Municipal Airport | Springdale |
| SQA | KIZA | Santa Ynez Airport | Santa Barbara County |
| SQI | KSQI | Whiteside County Airport - Joseph H Bittorf Field | Rock Falls |
| SQV | W28 | Sequim Valley Airport | Sequim |
| SRC | KSRC | Searcy Municipal Airport | Searcy |
| SRW | KRUQ | Mid-Carolina Regional Airport | Salisbury |
| STE | KSTE | Stevens Point Municipal Airport | Stevens Point |
| STK | KSTK | Sterling Municipal Airport | Sterling |
| STQ | KOYM | St Marys Municipal Airport | St. Marys |
| SUA | KSUA | Witham Field | Stuart |
| SUD | KSUD | Stroud Municipal Airport | Stroud |
| SUE | KSUE | Door County Cherryland Airport | Sturgeon Bay |
| SUM | KSMS | Sumter Airport | Sumter |
| SUO | KS21 | Sunriver Airport | Sunriver |
| SUW | KSUW | Richard I Bong Memorial Airport | Superior |
| SVE | KSVE | Susanville Municipal Airport | Susanville |
| SVH | KSVH | Statesville Regional Airport | Statesville |
| SWW | KSWW | Avenger Field | Sweetwater |
| SXY | N23 | Sidney Municipal Airport | Sidney |
| SYI | KSYI | Bomar Field / Shelbyville Municipal Airport | Shelbyville |
| SYN | KSYN | Stanton Airfield | Stanton |
| SYV | KSYV | Sylvester Airport | Sylvester |
| SZN | KSZN | Santa Cruz Island Airport | Santa Cruz Island |
| SZP | KSZP | Santa Paula Airport | Santa Paula |
| TAD | KTAD | Perry Stokes Airport | Trinidad |
| TBC | — | Tuba City Airport | Tuba City |
| TBR | KTBR | Statesboro Bulloch County Airport | Statesboro |
| TDO | KTDO | Ed Carlson Memorial Field South Lewis County Airport | Lewis County |
| TDW | KTDW | Tradewind Airport | Amarillo |
| TDZ | KTDZ | Toledo Executive Airport | Toledo |
| TEH | 3T4 | Tetlin Airport | Tetlin |
| THA | KTHA | Tullahoma Regional Airport William Northern Field | Tullahoma |
| THM | KTHM | Thompson Falls Airport | Thompson Falls |
| THP | KHSG | Hot Springs County Airport | Thermopolis |
| THV | KTHV | York Airport | York |
| TLF | 2K5 | Telida Airport | Telida |
| TLR | KTLR | Mefford Field | Tulare |
| TMA | KTMA | Henry Tift Myers Airport | Tifton |
| TNP | KTNP | Twentynine Palms Airport | Twentynine Palms |
| TNT | KTNT | Dade Collier Training and Transition Airport | Miami |
| TNU | KTNU | Newton Municipal Airport | Newton |
| TOA | KTOA | Zamperini Field | Torrance |
| TOC | KTOC | Toccoa Airport - R.G. Letourneau Field | Toccoa |
| TOR | KTOR | Torrington Municipal Airport | Torrington |
| TPF | KTPF | Peter O Knight Airport | Tampa |
| TRH | L72 | Trona Airport | Trona |
| TRL | KTRL | Terrell Municipal Airport | Terrell |
| TRX | KTRX | Trenton Municipal Airport | Trenton |
| TSG | TSG | Tanacross Airport | Tanacross |
| TSP | KTSP | Tehachapi Municipal Airport | Kern County |
| TTO | KBTN | Britton Municipal Airport | Britton |
| TUH | KAYX | Arnold Air Force Base | Manchester |
| TVI | KTVI | Thomasville Regional Airport | Thomasville |
| TWD | 0S9 | Jefferson County International Airport | Port Townsend |
| TWE | AK49 | Taylor Airport | Taylor |
| TYE | — | Tyonek Airport | Tyonek |
| TYZ | KTYL | Taylor Airport | Taylor |
| TZC | KCFS | Tuscola Area Airport | Caro |
| UBS | KUBS | Columbus Lowndes County Airport | Columbus |
| UCC | — | Yucca Airstrip | Mercury |
| UCE | 4R7 | Eunice Airport | Eunice |
| UCY | KUCY | Everett-Stewart Regional Airport | Union City |
| UDD | KUDD | Bermuda Dunes Airport | Palm Springs |
| UES | KUES | Waukesha County Airport | Waukesha |
| UGB | — | Ugashik Bay Airport | Pilot Point |
| UGN | KUGN | Waukegan National Airport | Chicago |
| UGS | — | Ugashik Airport | Ugashik |
| UIL | KUIL | Quillayute Airport | Forks |
| UKN | Y01 | Waukon Municipal Airport | Waukon |
| UKT | KUKT | Quakertown Airport | Quakertown |
| ULM | KULM | New Ulm Municipal Airport | New Ulm |
| UMM | PAST | Summit Airport | Cantwell |
| UMT | PAUM | Umiat Airport | Umiat |
| UMZ | KMEZ | Mena Intermountain Municipal Airport | Mena |
| UNU | KUNU | Dodge County Airport | Juneau |
| UOS | KUOS | Franklin County Airport | Sewanee |
| UPP | PHUP | Upolu Airport | Hawi |
| USC | K35A | Union County, Troy Shelton Field | Union |
| UTM | KUTA | Tunica Municipal Airport | Tunica |
| UUK | PAKU | Ugnu-Kuparuk Airport | Kuparuk |
| UVA | KUVA | Garner Field | Uvalde |
| UWA | MA53 | Ware Airport | Ware |
| VCV | KVCV | Southern California Logistics Airport | Victorville |
| VDI | KVDI | Vidalia Regional Airport | Vidalia |
| VEX | D60 | Tioga Municipal Airport | Tioga |
| VHN | KVHN | Culberson County Airport | Van Horn |
| VIH | KVIH | Rolla National Airport | Rolla |
| VJI | KVJI | Virginia Highlands Airport | Abingdon |
| VKS | KVKS | Vicksburg Municipal Airport | Vicksburg |
| VLA | KVLA | Vandalia Municipal Airport | Vandalia |
| VLE | 40G | Valle Airport | Valle/Grand Canyon Junction |
| VNC | KVNC | Venice Municipal Airport | Venice |
| VRS | 3VS | Roy Otten Memorial Airfield | Versailles |
| VSF | KVSF | Hartness State Airport | Springfield |
| VYS | KVYS | Illinois Valley Regional Airport Walter A Duncan Field | Peru |
| WAH | KBWP | Harry Stern Airport | Wahpeton |
| WAL | KWAL | Wallops Flight Facility Airport | Wallops Island |
| WAY | KWAY | Greene County Airport | Greene County |
| WBK | — | West Branch Community Airport | West Branch |
| WBR | KRQB | Roben Hood Airport | Big Rapids |
| WBU | KBDU | Boulder Municipal Airport | Boulder |
| WBW | KWBW | Wilkes Barre Wyoming Valley Airport | Wyoming Valley |
| WCR | PALR | Chandalar Lake Airport | Chandalar |
| WDG | KWDG | Enid Woodring Regional Airport | Enid |
| WDR | KWDR | Barrow County Airport | Winder |
| WEA | KWEA | Parker County Airport | Weatherford |
| WFK | KFVE | Northern Aroostook Regional Airport | Frenchville |
| WGO | KOKV | Winchester Regional Airport | Winchester |
| WHP | KWHP | Whiteman Airport | Pacoima |
| WHT | KARM | Wharton Regional Airport | Wharton |
| WIB | F05 | Wilbarger County Airport | Vernon |
| WLD | KWLD | Strother Field | Winfield |
| WLW | KWLW | Willows Glenn County Airport | Willows |
| WOW | PAUO | Willow Airport | Willow |
| WPO | K7V2 | North Fork Valley Airport | Paonia |
| WSF | PACS | Cape Sarichef Airport | Cape Sarichef |
| WSG | KAFJ | Washington County Airport | Washington |
| WSH | KHWV | Brookhaven Calabro Airport | Shirley |
| WSM | WSM | Wiseman Airport | Wiseman |
| WTR | — | Whiteriver Airport | Whiteriver |
| WVI | KWVI | Watsonville Municipal Airport | Watsonville |
| WVL | KWVL | Waterville Robert Lafleur Airport | Waterville |
| XES | KC02 | Grand Geneva Resort Airport | Lake Geneva |
| XFT | KBPD | Big Pine Sands STOLGround | Big Pine Key |
| XMD | KMDS | Madison Municipal Airport | Madison |
| XPR | KIEN | Pine Ridge Airport | Pine Ridge |
| XSD | KTNX | Tonopah Test Range Airport | Tonopah |
| ZNC | ZNC | Nyac Airport | Nyac |
| ZPH | KZPH | Zephyrhills Municipal Airport | Zephyrhills |
| BNF | — | Baranof Warm Springs Float and Seaplane Base | Baranof |
| BNH | MA87 | Cape Air Seaplanes on Boston Harbor Seaplane Base | Boston |
| BQV | BQV | Bartlett Cove Seaplane Base | Gustavus |
| CCD | 84CL | Century City Heliport | Los Angeles |
| CZP | Z71 | Cape Pole Seaplane Base | Cape Pole |
| ELW | — | Ellamar Seaplane Base | Ellamar |
| FAK | 2Z6 | False Island Seaplane Base | False Island |
| GDH | 3Z8 | Golden Horn Lodge Seaplane Base | Golden Horn Lodge |
| GFA | KGFA | Malmstrom Air Force Base | Great Falls |
| HAE | AZ15 | Lava Falls Heliport | Haeju |
| HBH | — | Entrance Island Seaplane Base | Entrance Island |
| HEY | KHEY | Hanchey Army (Fort Rucker) Heliport | Fort Rucker Ozark |
| HGT | KHGT | Tusi (Hunter Liggett) Army Heliport | Jolon |
| HLR | KHLR | Hood Army Air Field | Fort Cavazos |
| HWI | HWI | Hawk Inlet Seaplane Base | Hawk Inlet |
| JBT | Z59 | Bethel Seaplane Base | Bethel |
| JID | 9CA3 | Recreation and Conference Center Heliport | City of Industry |
| JPN | KJPN | Pentagon Army Heliport | Washington DC |
| JRB | KJRB | Downtown Skyport Heliport | New York City |
| KBE | — | Bell Island Hot Springs Seaplane Base | Bell Island |
| KBW | Z78 | Chignik Bay Seaplane Base | Chignik |
| KCN | KCN | Chernofski Harbor Seaplane Base | Chernofski Harbor |
| KIB | KIB | Ivanof Bay Seaplane Base | Ivanof Bay |
| KKL | KKL | Karluk Lake Seaplane Base | Karluk Lake |
| KTH | AK56 | Tikchik Lodge Seaplane Base | Tikchik |
| KWF | POKW | Waterfall Seaplane Base | Waterfall |
| LOR | KLOR | Lowe AHP (Fort Rucker) Heliport | Fort Rucker Ozark |
| MDA | KMDA | Martindale Army Heliport | San Antonio |
| MPB | KX44 | Miami Seaplane Base | Miami |
| PSQ | 9N2 | Philadelphia Seaplane Base | Essington |
| PTC | 16K | Port Alice Seaplane Base | Port Alice |
| PUL | 83Q | Port of Poulsbo Marina Moorage Seaplane Base | Poulsbo |
| PWR | PPWR | Port Walter Seaplane Base | Port Walter |
| PYL | PYL | Perry Island Seaplane Base | Perry Island |
| RSX | — | Rouses Point Seaplane Base | Rouses Point |
| SGW | A23 | Saginaw Seaplane Base | Saginaw Bay |
| SPQ | 6CA3 | Catalina Air-Sea Terminal Heliport | San Pedro |
| SYL | KSYL | Roberts Army Heliport | Camp Roberts/San Miguel |
| TKI | 57A | Tokeen Seaplane Base | Tokeen |
| TKL | PTFK | Taku Lodge Seaplane Base | Taku Lodge |
| TWH | — | Two Harbors Amphibious Terminal | Two Harbors |
| WKL | HI07 | Waikoloa Heliport | Waikoloa Village |
| WLR | 13Z | Loring Seaplane Base | Loring |
| WMK | 84K | Meyers Chuck Seaplane Base | Meyers Chuck |
| WSB | POWS | Steamboat Bay Seaplane Base | Steamboat Bay |
| WYB | 78K | Yes Bay Lodge Seaplane Base | Yes Bay |