| 二字代码 |
航空公司名称 |
| QQ |
Alliance Airlines, Reno Air (USA) defunct |
| QR |
Qatar Airways |
| QS |
Travel Service Airlines |
| QV |
Lao Airlines |
| QX |
Horizon Air (USA) |
| QZ |
Air Canada Jazz (Canada) |
| R2 |
Orenburg Airlines (Rus.) |
| R4 |
Russia Airline |
| RA |
Royal Nepal Airlines Corporation |
| RB |
Syrian Arab Airlines |
| RC |
Atlantic Airways |
| RE |
Aer Arann |
| RF |
Florida West International Airways |
| RG |
Varig (Brazilian Airlines) |
| RI |
Mandala Airlines |
| RJ |
Royal Jordanian |
| RN |
Air Horizons |
| RO |
Tarom Romanian Air Transport |
| RQ |
Kam Air (Afghanistan) |
| S2 |
Air Sahara (India) |
