 | Delta Air Lines | 1928 | 823 |
 | Dragonair | 1985 | 42 |
 | DHL Air | - | 29 |
 | Donghai Airlines Co., Ltd | 2006 | 16 |
 | Danish Air Transport | 1989 | 15 |
 | Darwin Airline SA | 2003 | 10 |
 | Dniproavia | 1992 | 8 |
 | Dana Airlines Limited | 2007 | 7 |
 | Dynamic Airways, LLC | 2009 | 6 |
 | DHL Aviation EEMEA B.S.C.(c) | 2010 | 5 |
 | Druk Air Corporation Ltd. | 1981 | 4 |
 | DART Limited trust distribution | - | 3 |
 | DHL Aero Expreso S.A. | 1996 | 3 |
 | Daallo Airlines | - | 2 |
 | Denim Air | 1996 | 2 |
 | DreamJet SAS t/a La Compagnie | 2014 | 2 |
 | DHL de Guatemala S.A. | 1991 | 1 |
 | Dubai Air Wing | - | - |
 | Deccan Cargo & Express Logistics | - | - |
 | Daily Air | - | - |
| Dreamline Aviation | - | - |
| Daka | - | - |
 | D.E.T.A. Air | - | - |
| DC Aviation Al-Futtaim | - | - |
| Dynamic Air | - | - |
| Donghai Business Aviation | - | - |
| Danish Army | - | - |
| Des R. Cargo Express | - | - |
| DJT Aviation | - | - |
| Diamond Flight Academy Scandinavia | - | - |
| Department Of The Army, Priority Air Transport | - | - |
| Denver Express | - | - |
| Doniya Air Gambia | - | - |
| Dat Lite | - | - |
 | Donavia | - | - |
 | Deutsche Bahn AG | - | - |
| Ducair | - | - |
| DHL Aviation | - | - |
 | Delta Air Charter | - | - |
| Deere And Company | - | - |
| Dynamair Aviation | - | - |
 | Department of National Defence | - | - |
| Duncan Aviation | - | - |
| Deltaq Engineering Aviation | - | - |
| Delta Private Jets | - | - |
| Destiladora de Alcoholes Y Mieles | - | - |
| De Havilland | - | - |
| Dornier Aviation Nigeria | - | - |
| Don Avia | - | - |
| Departamento de Agricultura de La Generalitat de Cataluna | - | - |
| Deltex | - | - |
| DAP Helicopteros | - | - |
| Daedalos Flugbetriebs | - | - |
 | Discovery Airways | - | - |
| Dominguez Toledo (Grupo Mayoral) | - | - |
| David Crawshaw Consultants | - | - |
| Dasnair | - | - |
| Donair Flying Club | - | - |
| Daya Aviation | - | - |
| DRF - Stiftung Luftrettung Gemeinnuetzige AG | - | - |
| Ducor World Airlines | - | - |
| Dove Air | - | - |
| Digital Equipment Corporation | - | - |
| Drummond Island Air | - | - |
| DI Air | - | - |
| Direct Fly | - | - |
| Duchess Of Brittany | - | - |
| Dushanbe Air | - | - |
| Djibouti Airlines | - | - |
| Direct Air | - | - |
| Divi Divi Air | - | - |
 | Dominican Wings. S.A. | - | - |
| Dream Flyers Training Center | - | - |
| Deraya Air Taxi | - | - |
 | Dirgantara Air Service | - | - |
| Deer Air | - | - |
| Desna | - | - |
| Danbury Airways | - | - |
| Domodedovo Airport Handling | - | - |
| Deccan Aviation (Lanka) | - | - |
| Dash Aviation | - | - |
| Damascene Airlines | - | - |
| Dasab Airlines | - | - |
| Danish Air Force | - | - |
| Dassault Falcon Jet | - | - |
| DATA International Aviation | - | - |
 | Dobrolet | - | - |
| Douniah Airlines | - | - |
| DSWA | - | - |
| DLR Deutsche Forschungsanstalt Fur Luft Und Raumfahfit | - | - |
| Didier Rousset Buy | - | - |
| Danish Navy | - | - |
| Deer Jet (Beijing) | - | - |
| Dassault Aviation | - | - |
| Dept. Of Aeronautics, State Of Nebraska | - | - |
| Dispatch Services | - | - |
| Dunair | - | - |
| Dynair Services | - | - |
| Dwyer Aircraft Sales | - | - |
| Dixie Airways | - | - |
| DanubeWings | - | - |
| Derazona Air Service | - | - |
| Decatur Aviation | - | - |
| D & K Aviation | - | - |
| Dvin-Avia | - | - |
| Delta State University | - | - |
| Danube-Air | - | - |
| Desarrollo Milaz | - | - |
| Durango Jet | - | - |
| Dgo Jet | - | - |
| Dolphin Express Airlines | - | - |
| D & D Aviaion | - | - |
| Delaware Skyways | - | - |
| Directflight Limited | - | - |
| Direct Aero Services | - | - |
| DLR Deutsches Zentrum Fur Luft-Und Raumfahrt E.V. | - | - |
| Dassault Falcon Service | - | - |
| Dala Air Services | - | - |
| DAMES, Department of aviation under the Ministry of Emergency Situaion | - | - |
| Dniproaviaservis | - | - |
| Dancopter | - | - |
| Desert Jet | - | - |
| Dreamshore Aero | - | - |
| Discovery Ltd | - | - |
| Dmcfly | - | - |
| Dept. Of Agriculture | - | - |
| Dana Executive Jets | - | - |
| Date Transformation | - | - |
| Dash Air Charter | - | - |
| Dome Petroleum | - | - |