| 1 | LEU | Lions-Air AG | Callsign: Lionsair, Name changed to Lions Air Skymedia AG d/b/a Lions Air. | CH | AVCODES |
| 2 | LEU | Lions Air Skymedia AG d/b/a Lions Air | Callsign: Lionsair, Name changed from Lions-Air AG. | CH | AVCODES |
| 3 | LEU | Lions-Air | | | ICAO1 |
| 4 | LEUB | LEU BROTHERS TRUCKING INC | | | SCAC3 |
| 5 | LEUL | LEISURE LINE | | | SCAC3 |
| 6 | LEUNA | Leunawerke | | DDR | TRAFFIC |
| 7 | LEUNA | Infra Leuna GmbH | | DE | VKM |
| 8 | LEUP | LUETTERS ENTERPRISE LLC | | | SCAC4 |
| 9 | LEUQ | LEUNER, JOSEPH INC | | | SCAC3 |
| 10 | LEUS | LEMIEUX, L SONS TRUCKING INC | | | SCAC4 |
