| 1 | 2F | Frontier Flying Service, Inc. | ICAO: FTA, Callsign: Frontier-Air, IATA Prefix: 517, Established in 1950. Rebranded as Ravn Connect during 2014. | USA | AVCODES |
| 2 | 2F | Payam (IPTAS) | ICAO: IRP, Callsign: Payamair, Designator 8P* recalled by IATA | IR | AVCODES |
| 3 | 2F | Afrinat International Airlines | | WAG | AVCODES |
| 4 | 2F | Fair Aviation (PTY) Ltd. t/a Fair Aviation | Designator 2F recalled by IATA. | ZA | AVCODES |
| 5 | 2F | twoFlex Taxi Aereo Ltda | ICAO: OWT, Callsign: Brasil Cargo, Name changed to Azul Conecta Ltda on 11 August 2020. ICAO designator changed to ACN. ICAO Callsign changed to Azul Conecta. Name changed from TWO Taxi Aereo Ltda. | BR | AVCODES |
| 6 | 2F | Frontier Flying Service, Inc. Branded as Ravn Connect | ICAO: FTA, Callsign: Frontier-Air, IATA Prefix: 517, Filed for Chapter 11 Bankruptcy, temporarily ceased all operations on 05 April 2020. Established in 1950. | USA | AVCODES |
| 7 | 2F | Azul Conecta Ltda | ICAO: ACN, Callsign: Azul Conecta, Name changed from twoFlex Taxi Aereo Ltda on 11 August 2020. ICAO designator changed from OWT. ICAO Callsign changed from Brasil Cargo. Name changed from TWO Taxi Aereo Ltda. | BR | AVCODES |
