Showing 1,012 registered airlines with a combined fleet of 8,801 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| Kitty Hawk Aircargo | KHA | 0 |
| Kitty Hawk Airways | KHC | 0 |
| Kiwi International Air Lines | KIA / KP | 0 |
| Knighthawk Express | KHX | 0 |
| L A Helicopter | LAH | 0 |
| L J Aviation | LJY | 16 |
| L-3 Communications Flight Internation Aviation | FNT | 0 |
| L'Express Airlines | LEX | 0 |
| La Compagnie | DJT / B0 | 2 |
| Labcorp | SKQ | 2 |