| 1 | FIA | Air First | | ROK | AVCODES |
| 2 | FIA | Four Island Air Ltd. (Antigua) | IATA: FX, Callsign: Islandair, Designator FX recalled by IATA | AG | AVCODES |
| 3 | FIA | FlyOne Airlines S.R.L. | IATA: 5F, Callsign: Fia Airlines, | MD | AVCODES |
| 4 | FIA | Four Island Air | | | ICAO1 |
| 5 | FIAA | FISHERS AND ARNOLD INC | | | SCAC3 |
| 6 | FIAC | FIRST AMERICAN CARRIERS INC | | | SCAC3 |
| 7 | FIAD | FELICITAE INVESTMENT LTD | | | SCAC4 |
| 8 | FIAF | FISHER CAPESPAN USA LLC | | | SCAC4 |
| 9 | FIAF | Finnish Air Force | Ilmavoimat | FIN | TRAFFIC |
| 10 | FIAG | FRONTLINE AG LLC | | | SCAC4 |
| 11 | FIAL | FORTUNATO, SHEILA | | | SCAC4 |
| 12 | FIAN | FINSA | | | SCAC4 |
| 13 | FIAP | FIRST PRIORITY | | | SCAC4 |
| 14 | FIAS | FINE ART SERVICES TRANSPORT LTD | | | SCAC3 |
| 15 | FIAT | Fiat | | I | TRAFFIC |
| 16 | FIAU | FRIO INDUSTRIAS ARGENTINAS SA | | RA | BIC |
