| ICAO | IATA | NAME |
|---|
| | Hacienda Airlines |
| FMS | | Hadison Aviation |
| HAG | H6 | Hageland Aviation Services |
| POW | | Hagondale Limited |
| HHN | HR | Hahn Air |
| CHH | HU | Hainan Airlines |
| 1R | Hainan Phoenix Information Systems |
| HLS | | Haiti Air Freight |
| HAM | 2T | Haiti Ambassador Airlines |
| HTI | | Haiti International Air |
| HRB | | Haiti International Airline |
| HNR | | Haiti National Airlines (HANA) |
| HTN | | Haiti North Airline |
| HTC | | Haiti Trans Air |
| HBC | | Haitian Aviation Line |
| HAJ | | Hajvairy Airlines |
| HKL | | Hak Air |
| HLH | | Hala Air |
| HCN | | Halcyon Air/Bissau Airways |
| HHI | 4R | Hamburg International |
| HJL | | Hamlin Jet |
| HMM | | Hamra Air |
| WVA | | Hand D Aviation |
| HGR | | Hangar 8 |
| HGD | | Hangard Aviation |
| HAN | | Hansung Airlines |
| HLX | X3 | Hapag-Lloyd Express (TUIfly) |
| HLF | HF | Hapagfly |
| HAR | HB | Harbor Airlines |
| HMY | HQ | Harmony Airways |
| NBR | | Haughey Air |
| PYN | | Haverfordwest Air Charter Services |
| HAV | | Havilah Air Services |
| HAL | HA | Hawaiian Airlines |
| HP | Hawaiian Pacific Airlines |
| HKR | | Hawk Air |
| HMX | | Hawk De Mexico |
| BH | Hawkair |
| HKI | | Hawkaire |
| HZL | | Hazelton Airlines |
| HLA | | HC Airlines |
| HVY | HN | Heavylift Cargo Airlines |
| HVL | | Heavylift International |
| HDC | | Helcopteros De Cataluna |
| HCB | | Helenair (Barbados) |
| HCL | | Helenair Corporation |
| HHP | | Helenia Helicopter Service |
| HLR | | Heli Air Services |
| ALJ | | Heli Ambulance Team |
| HEB | | Heli Bernina |
| HFR | 8H | Heli France |
| HYH | | Heli Hungary |
| HLM | | Heli Medwest De Mexico |
| HLI | | Heli Securite |
| HTP | | Heli Trip |
| HLU | | Heli Union Heli Prestations |
| MCM | | Heli-Air-Monaco |
| HHE | | Heli-Holland |
| HRA | | Heli-Iberica |
| HIF | | Heli-Iberica Fotogrametria |
| HIG | | Heli-Inter Guyane |
| HLK | | Heli-Link |
| HMC | | Heliamerica De Mexico |
| HEA | | Heliavia-Transporte Aereo |
| CDY | | Heliaviation Limited |
| HIB | | Helibravo Aviacao |
| HLC | | Helicap |
| COV | | Helicentre Coventry |
| HEL | | Helicol |
| HCP | | Helicopter |
| JKY | | Helicopter & Aviation Services |
| MVK | | Helicopter Training & Hire |
| HAP | | Helicopteros Aero Personal |
| HAA | | Helicopteros Agroforestal |
| HNT | | Helicopteros Internacionales |
| HEN | | Helicopteros Y Vehiculos Nacionales Aereos |
| HHH | | Helicsa |
| JBA | JB | Helijet |
| HDR | | Helikopterdrift |
| SCO | | Helikopterservice Euro Air |
| OCE | | Heliocean |
| HCY | ZU | Helios Airways |
| HLP | | Helipistas |
| HPL | | Heliportugal |
| HEC | | Heliservicio Campeche |
| HSU | | Helisul |
| HSI | | Heliswiss |
| HLT | | Helitafe |
| HIT | | Helitalia |
| OFA | | Helitaxi Ofavi |
| HTA | | Helitrans |
| HTS | | Helitrans Air Service |
| HLW | | Heliworks |
| HEJ | T4 | Hellas Jet |
| HAF | | Hellenic Air Force |
| FHE | HW | Hello |
| HLG | | Helog |
| OAW | 2L | Helvetic Airways |
| HMS | DU | Hemus Air |
| HAC | | Henebury Aviation |
| SSH | | Heritiage Flight (Valley Air Services) |
| HED | | Herritage Aviation Developments |
| ALX | EO | Hewa Bora Airways |
| H4 | Héli Sécurité Helicopter Airlines |
| HFY | 5K | Hi Fly |
| HHS | | Hi-Jet Helicopter Services |
| HLB | | High-Line Airways |
| HWY | | Highland Airways |
| HIS | | Hispaniola Airways |
| HGA | | Hogan Air |
| NTH | | Hokkaido Air System |
| ADO | HD | Hokkaido International Airlines |
| ABH | | Hokuriki-Koukuu Company |
| HOA | H5 | Hola Airlines |
| HIN | | Holding International Group |
| HOL | | Holiday Airlines |
| HTR | | Holstenair Lubeck |
| HMV | | Homac Aviation |
| HAS | | Honduras Airlines |
| CRK | N8 | Hong Kong Airlines |
| HKE | UO | Hong Kong Express Airways |
| HEX | | Honiara Cargo Express |
| HPJ | | Hop-A-Jet |
| HH | Hope Air |
| QXE | QX | Horizon Air |
| HSM | | Horizon Air for Transport and Training |
| KOK | | Horizon Air Service |
| HOR | | Horizon Air-Taxi |
| HZA | BN | Horizon Airlines |
| HPS | | Horizon Plus |
| HUD | | Horizons Unlimited |
| HOZ | | Horizontes Aereos |
| HDI | | Hoteles Dinamicos |
| HHO | | Houston Helicopters |
| GGV | | Houston Jet Services |
| OZU | | Hozu-Avia |
| HWD | | HPM Investments |
| KTR | | HT Helikoptertransport |
| AHT | | HTA Helicopteros |
| HUB | | Hub Airlines |
| HUS | | Huessler Air Service |
| GMH | | Hughes Aircraft Company |
| WHR | | Hummingbird Helicopter Service |
| HUV | | Hunair Hungarian Airlines |
| HUF | | Hungarian Air Force |
| HYA | | Hyack Air |
| HYC | | Hydro Air Flight Operations |
| HYD | | Hydro-Québec |
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