| 1 | HEJ | Hellas Jet S.A. | IATA: T4, Callsign: Hellas Jet, IATA Designator changed to HJ. Subsidary of Cyprus Airways | GR | AVCODES |
| 2 | HEJ | Hellas Jet S.A. | IATA: HJ, Callsign: Hellas Jet, IATA Designator changed from T4. Founded in 2002. Ceased operations in 2010. Subsidary of Cyprus Airways | GR | AVCODES |
| 3 | HEJ | Hellas Jet | IATA: T4 | | ICAO1 |
| 4 | HEJC | HEJ CHAROLAIS | | | SCAC4 |
| 5 | HEJJ | HERNANDEZ RAMIREZ, JUAN JAIME | | | SCAC4 |
| 6 | HEJS | HAMILTON, E J TRUCKING INC | | | SCAC4 |
