Airlines — C
- CPACathay Pacific
- CJRCaverton Helicopters
- CAYCayman Airways
- CIFCB Airways UK ( Interliging Flights )
- XBMCBM America
- CCFCCF Manager Airline
- CCCCCML Airlines
- CEBCebu Pacific
- CILCecil Aviation
- CEDCEDTA (Compania Ecuatoriana De Transportes Aereos)
- CEGCega Aviation
- CELCEIBA Intercontinental
- CLJCello Aviation
- CECCeltic Airways
- CWECeltic West
- CNACentavia
- CEVCente D'Essais En Vol
- CNLCentennial Airlines
- CNSCentennial Flight Centre
- CVOCenter Vol
- CTSCenter-South
- CETCentrafrican Airlines
- CAXCentral Air Express
- CTLCentral Airlines
- CNYCentral Airways
- ACNCentral American Airlines
- YOGCentral Aviation
- CCGCentral Connect Airlines
- DRNCentral De Discos De Reynosa
- CMACentral European Airlines
- CHACentral Flying Service
- CEMCentral Mongolia Airways
- GLRCentral Mountain Air
- CQCCentral Queensland Aviation College
- CSICentral Skyport
- CLWCentralwings
- DTVCentre Airlines
- CGSCentre of Applied Geodynamica
- CVCCentre-Avia
- ACFCentro de Formacion Aeronautica de Canarias
- CCVCentro De Helicopteros Corporativos
- CWCCenturion Air Cargo
- URYCentury Aviation
- HAICentury Aviation International
- XADCertified Air Dispatch
- CERCetraca Aviation Service
- IRUChabahar Airlines
- CLGChalair Aviation
- CHKChalk's Ocean Airways
- CLSChallenge Air Transport
- CHSChallenge Aviation
- OFFChallenge International Airlines
- CPHChampagne Airlines
- CCPChampion Air
- NCHChanchangi Airlines
- CGNChangan Airlines
- CHNChannel Island Aviation
- WMLChantilly Air
- CPLChaparral Airlines
- CSUChari Aviation Services
- CAHCharlan Air Charter
- HMDCharlie Hammonds Flying Service
- CGDCharlotte Air National Guard
- CHWCharter Air
- HRTChartright Air
- CHQChautauqua Airlines
- SCHCHC Airways
- HBICHC Denmark
- HEMCHC Helicopters
- HKSCHC Helikopter Service
- FQRCheapFlyingInternational
- CBBCheboksary Airenterprise JSC
- CHMChemech Aviation
- CHZCherline
- CMKChernomor-Avia
- CBMCherokee Express
- CCYCherry Air
- CABChesapeake Air Service
- CVRChevron U.S.A
- CYACheyenne Airways
- CGOChicago Air
- WDYChicago Express
- RATChief Rat Flight Services
- CCHChilchota Taxi Aereo
- DESChilcotin Caribou Aviation
- CADChilliwack Aviation
- ETNChim-Nir Aviation
- CALChina Airlines
- CKKChina Cargo Airlines
- CESChina Eastern Airlines
- HXAChina Express Airlines
- CFAChina Flying Dragon Aviation
- CTHChina General Aviation Corporation
- CAGChina National Aviation Corporation
- CBFChina Northern Airlines
- CNWChina Northwest Airlines
- CHCChina Ocean Helicopter Corporation
- CYZChina Postal Airlines
- CSNChina Southern Airlines
- CXNChina Southwest Airlines