| 1 | Y8 | Passaredo Transportes Aereos, S.A. | ICAO: PTB, Callsign: Passaredo, IATA Prefix: 837, Ceased operations on 18 April 2002. | BR | AVCODES |
| 2 | Y8 | Sayany Airlines | ICAO: SYL, Callsign: Sayany, | RUS | AVCODES |
| 3 | Y8 | Yangtze River Express Airlines Co., Ltd. | ICAO: YZR, Callsign: Yangtze River, Name changed to Yangtze River Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
| 4 | Y8 | JSC Airline Yakutia | ICAO: SVL, Callsign: Air Yakutia, Designator Y8* recalled by IATA | RUS | AVCODES |
| 5 | Y8 | Yangtze River Airlines Co., Ltd. | ICAO: YZR, Callsign: Yangtze River, Name changed to Suparna Airlines Co., Ltd. On 07 July 2017. Name changed from Yangtze River Express Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
| 6 | Y8 | Suparna Airlines Co., Ltd. | ICAO: YZR, Callsign: Yangtze River, Name changed from Yangtze River Airlines Co., Ltd. w.e.f. 07 July 2017. Name previously changed from Yangtze River Express Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
