| 1 | 9Y | Air Kazakstan | ICAO: KZK, Callsign: Air Kazakstan, IATA Prefix: 452, Founded and commenced operations in 1996. Ceased operations on 29 February 2004. | KZ | AVCODES |
| 2 | 9Y | Axis Linternational Lines S.A. | Designator 9Y recalled by IATA | CAM | AVCODES |
| 3 | 9Y | MDLR Airlines Pvt. Ltd. | ICAO: MDD, | IND | AVCODES |
| 4 | 9Y | FlyGeorgia | ICAO: FGE, Callsign: Georgian Wing, Designator 9Y recalled by IATA | GE | AVCODES |
| 5 | 9Y | National Airways plc | ICAO: NAE, Callsign: National, Designator 9Y recalled by IATA | ETH | AVCODES |
| 6 | 9Y | National Airways plc | ICAO: NAE, Callsign: National, | ETH | AVCODES |
