| Y2 | AFJ | Alliance Air (African Joint Air Services) | |
| Y2 | GSM | Flyglobespan | |
| Y4 | EQA | 067 | Eagle Aviation |
| Y5 | RXR | Arax Airways | |
| Y7 | FJE | 362 | Silverjet Cargo/Flyjet |
| Y8 | PTB | 837 | Passaredo Transportes Aeros |
| Y8 | YZR | Yangtze River Express Airlines | |
| Y9 | IRK | 780 | Kish Air |
| YB | TCC | Trans Continental Airlines | |
| YC | FWQ | 060 | Flight West Airlines |
| YF | FUJ | Connect Air | |
| YG | OTL | South Airlines | |
| YH | AIJ | Air Jet | |
| YH | WCW | West Caribbean Airways | |
| YI | TUR European Airways | ||
| YI | RSI | 806 | Air Sunshine |
| YJ | NTN | National Airlines (South Africa) | |
| YK | YVK | 056 | Cyprus Turkish Airlines |
| YL | LLM | 511 | Yamal Airlines |
| YM | BSC | Blue Sky Carrier | |
| YM | MGX | 409 | Montenegro Airlines |
| YN | CRQ | 219 | Air Creebec (1994) |
| YP | AEF | 633 | Aero Lloyd |
| YQ | SCO | Helikopterservice- Euro Air | |
| YQ | POT | 342 | Polet Cargo Airlines |
| YS | RGI | 982 | Regional |
| YT | TGA | 030 | Air Togo |
| YU | ADM | 725 | Aerolineas Dominicanas |
| YV | ASH | 533 | Mesa Airlines Inc |
| YW | ANS | 694 | Air Nostrum LAMSA |
| YX | MEP | 453 | Midwest Airlines Cargo |