| H2 | CTB | | City Bird Airlines |
| H5 | MVL | 428 | Magadan Airlines |
| H6 | CHB | | Chelyabinsk Air Enterprise |
| H7 | LFA | 770 | Air Alfa |
| H8 | KHB | 560 | Dalavia |
| HA | HAL | 173 | Hawaiian Airlines |
| HD | ADO | | Air Do |
| HE | LGW | | Walter Airlines |
| HF | HLF | 617 | Tuifly |
| HG | NLY | | Niki |
| HH | ICB | 652 | Islandsflug |
| HJ | HJA | 623 | Air Haiti |
| HK | | | Yangon Airways |
| HL | GAA | 357 | Business Express (Delta Connection) |
| HM | SEY | 061 | Air Seychelles |
| HN | HVY | | HeavyLift Cargo Airlines |
| HO | DJA | 394 | Antinea Airlines |
| HO | DKH | | Juneyao Airlines |
| HP | AWE | 401 | America West Airlines |
| HQ | HMY | | HMY (Harmony) Airways |
| HR | HHN | 169 | Hahn Air |
| HS | RYN | | Ryan International Airlines |
| HS | HSV | | Directflyg |
| HS | HIL | 990 | Highland Air |
| HU | CHH | 880 | Hainan Airlines |
| HV | TRA | 979 | Transavia Airlines |
| HX | HAS | 099 | Hamburg Airlines |
| HY | UZB | 250 | Uzbekistan Airways |
| HZ | SHU | 598 | SAT Airlines |
