| 1 | DFS | Dwyer Aircraft Sales, Inc. | Callsign: Dwyair, | USA | AVCODES |
| 2 | DFS | Dwyer Aircraft Services | | | ICAO1 |
| 3 | DFS | Dampfbahn Fränkische Schweiz e.V. | Ebermannstadt | D | privat-bahn.de |
| 4 | DFS | Deutsche Forschungsanstalt für Segelflug | | D | TRAFFIC |
| 5 | DFS | Dampfbahn Fränkische Schweiz e.V | | DE | VKM |
| 6 | DFSA | DAKOTA FARM SERVICE | | | SCAC4 |
| 7 | DFSC | DELTAMAX FREIGHT SYSTEM CHICAGO | | | SCAC4 |
| 8 | DFSD | DEDICATED FLEET SYSTEMS SPECIAL COM | | | SCAC4 |
| 9 | DFSF | DEPOT FARM SUPPLY INC | | | SCAC4 |
| 10 | DFSG | DEPENDABLE FREIGHT SERVICES | | | SCAC4 |
| 11 | DFSH | DIAMOND FREIGHT SYSTEMS | | | SCAC4 |
| 12 | DFSJ | DAVIS FUEL SERVICE INC | | | SCAC4 |
| 13 | DFSL | DIPLOMAT FLIGHT SERVICES LLC | | | SCAC4 |
| 14 | DFSO | DAIRY FEED SOLUTIONS LLC | | | SCAC4 |
| 15 | DFSR | D F S DICARLO FOOD SERVICE | | | SCAC4 |
| 16 | DFSS | DANFREIGHT SYSTEMS INC | | | SCAC4 |
| 17 | DFSU | FLORENS ASSET MANAGEMENT COMPANY LIMITED | | HK | BIC |
| 18 | DFSU | DONG FANG INTERNATIONAL | | | SCAC4 |
| 19 | DFSW | DAVIS FARM & SAWMILL | | | SCAC4 |
