| HAL | HA | 173 | Hawaiian Airlines |
| HAR | 495 | Harbour Airlines | |
| HAS | HX | 099 | Hamburg Airlines |
| HAX | BenAir | ||
| HBC | WD | 851 | Haitian Aviation Lines |
| HCY | ZU | 032 | Helios Airways |
| HDA | KA | 043 | Dragonair |
| HEJ | T4 | 681 | Hellas Jet |
| HER | UD | 848 | Hex´Air |
| HGA | Hoganair | ||
| HHI | 4R | Hamburg International | |
| HHN | HR | 169 | Hahn Air |
| HIL | HS | 990 | Highland Air |
| HJA | HJ | 623 | Air Haiti |
| HKA | Superior Aviation | ||
| HKE | UO | Hong Kong Express Airways | |
| HLA | NP | H C Airlines | |
| HLF | HF | 617 | Tuifly |
| HLN | Air Holland | ||
| HLR | Heli Air Services | ||
| HLS | 9F | 671 | Haiti Air Freight International |
| HMS | DU | 748 | Hemus Air |
| HMY | HQ | HMY (Harmony) Airways | |
| HOL | Holiday Airlines | ||
| HRH | WR | 971 | Royal Tongan Airlines |
| HRT | TAR-Transporte Aereo Rioplatenese | ||
| HSA | S9 | 895 | East African Safari Air |
| HSK | 5P | SkyEurope Airlines | |
| HSV | HS | Directflyg | |
| HTT | Air Tchad | ||
| HUK | Hungarian Ukrainian Airlines | ||
| HVN | VN | 738 | Vietnam Airlines |
| HVY | HN | HeavyLift Cargo Airlines | |
| HXA | G5 | China Express Airlines | |
| HYC | Hydro Air Cargo | ||
| HZL | ZL | 899 | Regional Express |