| - | - | Andrews-Murphy | Andrews | |
| - | - | Angwin-Parrett | Angwin | |
| AIB | - | Anita Bay Airport | Anita Bay | |
| - | - | Anita Mun-Burke Memorial | Anita | |
| - | KIKV | Ankeny Regional | Ankeny | |
| ANN | - | Annette Island Airport | Annette Island | |
| - | KAFP | Anson Co | Wadesboro | |
| - | - | Antelope Co | Neligh | |
| - | - | Antelope Valley | Grouse | |
| - | NY28 | Anthonson | Jordan | |
| ANY | KANY | Anthony Airport | Anthony | |
| ATE | - | Antlers Airport | Antlers | |
| - | - | Anton | Dayton | |
| - | - | Antonneau Memorial | Green Bay | |
| AAF | KAAF | Apalachicola Municipal Airport | Apalachicola | |
| APV | KAPV | Apple Valley Airport | Apple Valley | |
| - | KAQP | Appleton Municipal | Appleton | |
| RKP | KRKP | Aransas County Airport | Rockport | |
| AHF | - | Arapahoe Municipal Airport | Arapahoe | |
| - | - | Arcadia Municipal | Arcadia | |
| - | - | Arcadia-Bienville Parish | Arcadia | |
| - | - | Archer City Municipal | Archer City | |
| - | KAOC | Arco-Butte Co | Arco | |
| - | - | Ardmore | Ardmore | |
| AHD | - | Ardmore Downtown Executive Airport | Ardmore | |
| - | KRWN | Arens | Winamac | |
| - | - | Argonia Municipal | Argonia | |
| - | - | Argyle | Argyle | |
| BYH | KBYH | Arkansas International Airport | Blytheville | |
| - | - | Arledge | Stamford | |
| - | - | Arlington Municipal | Arlington | |
| - | - | Arlington Municipal | Arlington | |
| - | KAWO | Arlington Municipal | Arlington | |
| AYE | - | Army Air Field Heliport | Fort Devens | |
| - | - | Arner Memorial | Lehighton | |
| - | - | Arness Lake | Kenai | |
| - | - | Arnold | Croswell | |
| - | - | Arnold | Halls | |
| AYX | KAYX | Arnold Afb | Tullahoma | |
| TUH | - | Arnold Air Force Base | Tullahoma | |
| - | - | Arrowhead | Canadian | |
| ATS | KATS | Artesia Airport | Artesia | |
| - | - | Arthur | Arthur | |
| - | - | Arthur | Fayette | |
| - | - | Arthur Municipal | Arthur | |
| - | KGEV | Ashe Co | Jefferson | |
| - | KHBI | Asheboro Municipal | Asheboro | |
| ASX | KASX | Ashland Airport | Ashland | |
| - | - | Ashland Co | Ashland | |
| - | - | Ashland Mun-Parker | Ashland | |