| 1 | C3 | Independent Carrier (ICAR) | ICAO: IPR, Callsign: Air Icar, IATA Prefix: 655, IATA designator changed from C3* | UA | AVCODES |
| 2 | C3 | Independent Carrier (ICAR) | ICAO: IPR, Callsign: Air Icar, IATA Prefix: 655, IATA designator reinstated | UA | AVCODES |
| 3 | C3 | Contactair GmbH & Co. | ICAO: KIS, 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 |
| 4 | C3 | Independent Carrier (ICAR) | ICAO: IPR, IATA designator changed to C3 | UA | AVCODES |
| 5 | C3 | Sky Capital Airlines Ltd | ICAO: AHW, IATA Prefix: 400, Founded in 2009. | BD | AVCODES |
| 6 | C3 | Trade Air d.o.o. | ICAO: TDR, Callsign: Tradeair, IATA designator changed from 8P* | HR | AVCODES |
| 7 | C3 | Cargo Three, Inc. (Cargo Tres, Sociedad Anónima) | ICAO: CTW, Callsign: Third Cargo, IATA Prefix: 364, | PA | AVCODES |
