| 1 | KFB | Oy Air Botnia AB | IATA: KF, Callsign: Botnia, IATA Prefix: 142, Name changed to Blue 1 in January 2004. ICAO callsign changed to Bluefinn | FIN | AVCODES |
| 2 | KFB | Blue1 Oy | IATA: KF, Callsign: Bluefinn, IATA Prefix: 142, Name changed from Oy Air Botnia AB. ICAO designator changed to BLF. ICAO callsign changed to Bluefinn | FIN | AVCODES |
| 3 | KFB | Superior Transportation Associates, Inc d/b/a STAjets | Callsign: Mission, | USA | AVCODES |
| 4 | KFBE | Köln-Frechen-Benzelrather Eisenbahn GmbH | City: Köln | D | TRAFFIC |
| 5 | KFBK | KF BROKERAGE LLC | | | SCAC4 |
| 6 | KFBL | KENTUCKY FLATBEDS LLC | | | SCAC4 |
| 7 | KFBS | KELLEY FREIGHT BROKERS | | | SCAC4 |
| 8 | KFBZ | K & F BRICK COMPANY | | | PWRC |
