Airlines — H
- FMSHadison Aviation
- HAGHageland Aviation Services
- POWHagondale Limited
- HHNHahn Air
- CHHHainan Airlines
- HLSHaiti Air Freight
- HAMHaiti Ambassador Airlines
- HTIHaiti International Air
- HRBHaiti International Airline
- HNRHaiti National Airlines (HANA)
- HTNHaiti North Airline
- HTCHaiti Trans Air
- HBCHaitian Aviation Line
- HAJHajvairy Airlines
- HKLHak Air
- HLHHala Air
- HCNHalcyon Air/Bissau Airways
- HAYHamburg Airways
- HHIHamburg International
- HJLHamlin Jet
- HMMHamra Air
- WVAHand D Aviation
- HGRHangar 8
- HGDHangard Aviation
- HA1Hankook Air US
- HNXHankook Airline
- HANHansung Airlines
- HLFHapagfly
- HPYHappy Air
- HARHarbor Airlines
- HMYHarmony Airways
- NBRHaughey Air
- PYNHaverfordwest Air Charter Services
- HAVHavilah Air Services
- HALHawaiian Airlines
- HMXHawk De Mexico
- HKIHawkaire
- HZLHazelton Airlines
- HLAHC Airlines
- HVYHeavylift Cargo Airlines
- HVLHeavylift International
- HBHHebei Airlines
- HBRHebradran Air Services
- HDCHelcopteros De Cataluna
- HCBHelenair (Barbados)
- HCLHelenair Corporation
- HHPHelenia Helicopter Service
- HLRHeli Air Services
- ALJHeli Ambulance Team
- HEBHeli Bernina
- HFRHeli France
- HYHHeli Hungary
- HLMHeli Medwest De Mexico
- HLIHeli Securite
- HTPHeli Trip
- HLUHeli Union Heli Prestations
- MCMHeli-Air-Monaco
- HHEHeli-Holland
- HRAHeli-Iberica
- HIFHeli-Iberica Fotogrametria
- HIGHeli-Inter Guyane
- HLKHeli-Link
- HMCHeliamerica De Mexico
- HEAHeliavia-Transporte Aereo
- CDYHeliaviation Limited
- HIBHelibravo Aviacao
- HLCHelicap
- COVHelicentre Coventry
- HELHelicol
- HCPHelicopter
- JKYHelicopter & Aviation Services
- MVKHelicopter Training & Hire
- HAPHelicopteros Aero Personal
- HAAHelicopteros Agroforestal
- HNTHelicopteros Internacionales
- HENHelicopteros Y Vehiculos Nacionales Aereos
- HHHHelicsa
- JBAHelijet
- HDRHelikopterdrift
- SCOHelikopterservice Euro Air
- OCEHeliocean
- HCYHelios Airways
- HLPHelipistas
- HPLHeliportugal
- HECHeliservicio Campeche
- HSUHelisul
- HSIHeliswiss
- HLTHelitafe
- HITHelitalia
- OFAHelitaxi Ofavi
- HTAHelitrans
- HTSHelitrans Air Service
- HTHHelitt Líneas Aéreas
- HLWHeliworks
- HEJHellas Jet
- HAFHellenic Air Force
- HEYHellenic Airways
- IMPHellenic Imperial Airways
- HSTHellenic Star Airways
- FHEHello