| 1 | FKS | Omega Air Holdings LLC dba Focus Air | IATA: F2, | USA | AVCODES |
| 2 | FKS | Focus Air | | | ICAO1 |
| 3 | FKS | Freundeskreis Selketalbahn e.V. | Alexisbad | D | privat-bahn.de |
| 4 | FKSE | FREERKSEN TRUCKING | | | SCAC3 |
| 5 | FKSE | FREERKSEN TRUCKING INC | | | SCAC4 |
| 6 | FKSF | FRANKIES FUEL LLC | | | SCAC4 |
| 7 | FKSL | FREDERICK, STEPHEN LOGISTICS INC | | | SCAC4 |
| 8 | FKSN | FRANKS & SON INC | | | SCAC3 |
| 9 | FKSO | FISKE TRUCKING COMPANY | | | SCAC3 |
| 10 | FKSO | FRANKS TRUCKING | | | SCAC4 |
| 11 | FKSP | FRANKLIN SPECIALTY TRANSPORT INC | | | SCAC4 |
| 12 | FKSQ | FRANKS DELIVERY SERVICE | | | SCAC3 |
| 13 | FKSS | FRANKS SPOTTING SERVICE | | | SCAC3 |
| 14 | FKSS | FENIKSSPED D O O BRNIK | | | SCAC4 |
| 15 | FKST | FRANKS SCHOOL TRANSPORTATION CO INC | | | SCAC3 |
| 16 | FKST | FOUR K'S (4K'S) TRANSPORTATION | | | SCAC4 |
| 17 | FKSY | FREIGHT KING SYSTEMS INC | | | SCAC3 |
