| 1 | KIS | Contactair GmbH & Co. | IATA: C3, Callsign: Contactair, Merged with OLT Express Germany on 01 September 2012. Designator C3 reinstated by IATA. Name changed from Contactair Flugdienst and Co. | D | AVCODES |
| 2 | KIS | Contactair Flugdienst and Co. | Callsign: Contactair, Name changed to Contactair GmbH & Co. Designatir KI recalled by IATA | D | AVCODES |
| 3 | KIS | Contactair Flugdienst and Co. | IATA: KI, Callsign: Contactair, Designator KI recalled by IATA | D | AVCODES |
| 4 | KIS | Kish Air | IATA: Y9, Callsign: Kishair, IATA Prefix: 780, ICAO Designator changed from IRK. | IR | AVCODES |
| 5 | KIS | Contactair | | | ICAO1 |
| 6 | KIS | Contact Air | | D | TRAFFIC |
| 7 | KISE | KENTRA INTERNATIONAL SERVICES CORP | | | SCAC4 |
| 8 | KISH | KINDERKNOP SPECIALIZED HAULING INC | | | SCAC3 |
| 9 | KISI | KING SOLUTIONS INC | | | SCAC4 |
| 10 | KISK | KISSICK TRUCK LINES INC | | | SCAC3 |
| 11 | KISL | KIESEL BROS | | | SCAC3 |
| 12 | KISO | KISRO, GARY TRUCKING CO INC | | | SCAC3 |
| 13 | KISO | Kiso forest railway | | J | TRAFFIC |
| 14 | KISQ | KHOLI, SAM TRANSPORT INC | | | SCAC4 |
| 15 | KIST | KISKO TRANSPORTATION CO | | | SCAC3 |
| 16 | KISU | KELVIN INTERNATIONAL SERVICES UK | | | SCAC3 |
| 17 | KISU | KELVIN I | | | SCAC4 |
| 18 | KISV | KINGS SERVICE | | | SCAC3 |
| 19 | KISV | KEN INTERNATIONAL SERVICE INC | | | SCAC4 |
| 20 | KISY | KAISER, STANLEY | | | SCAC3 |
