| 1 | RKA | Air Afrique | IATA: RK, Callsign: Airafric, IATA Prefix: 092, Declared bankrupt on 07 February 2002. | CI | AVCODES |
| 2 | RKA | Polar Airlines, State Unitary Enterprise Air Company | Callsign: Air Sakha, Name changed to Polar Airlines OJSC | RUS | AVCODES |
| 3 | RKA | Polar Airlines OJSC | IATA: PI, Callsign: Air Sakha, Name changed from Polar Airlines, , State Unitary Enterprise Air Company. Purchased by JSC Airline Yakutia (R3/SYL) | RUS | AVCODES |
| 4 | RKA | Air Afrique | | | ICAO1 |
| 5 | RKAB | RENKAS, CRAIG W | | | SCAC4 |
| 6 | RKAL | RECKART LOGISTICS INC. | | | SCAC4 |
| 7 | RKAM | R & KA | | | SCAC4 |
| 8 | RKAP | RED KAP SALES INC | | | SCAC4 |
