| 1 | JXX | Jet X | | I | AVCODES |
| 2 | JXX | JetX Airlines | IATA: GX, Callsign: Jetbird, IATA Prefix: 591, Name changed to JetX ehf (Primera Air) | IS | AVCODES |
| 3 | JXX | JetX ehf, (Primera Air) | IATA: GX, Callsign: Jetbird, IATA Prefix: 591, Name changed to Primera Air ehf (Jetx). Name changed from JetX Limited | IS | AVCODES |
| 4 | JXX | Primera Air ehf (Jetx) | IATA: GX, Callsign: Jetbird, IATA Prefix: 591, Designator GX recalled by IATA. Name changed from JetX ehf, (Primera Air) | IS | AVCODES |
| 5 | JXX | Jinxiang Airlines | Callsign: Coconut, | PRC | AVCODES |
| 6 | JXX | Jetx Airlines | IATA: GX | | ICAO1 |
| 7 | JXXT | JONES READY MIX LLC | | | SCAC4 |
