| 1 | JKR | Empire Airways | Callsign: Joker, Established in 2004. Ceased operations in 2012. Wholly owned by Partner Aviation Enterprises. | USA | AVCODES |
| 2 | JKR | Reliant Aviation d/b/a Justice Air Charter | Callsign: Joker, Name changed to Justice Air Charter. | USA | AVCODES |
| 3 | JKR | Justice Air Charter | Callsign: Joker, Name changed to Justice Air, Inc. Name changed from Reliant Aviation d/b/a Justice Air Charter. | USA | AVCODES |
| 4 | JKR | Justice Air, Inc. | Callsign: Joker, Name changed from Justice Air Charter. Name changed from Reliant Aviation d/b/a Justice Air Charter. | USA | AVCODES |
| 5 | JKRO | JOHNSON, KARL R TRUCKING INC | | | SCAC4 |
| 6 | JKRS | J K TRANSPORT INC | | | SCAC4 |
