| 4001 | FLUK | FLUKE TRANSPORT LTD | | | SCAC3 |
| 4002 | FLUK | FLUKE TRANSPORT LTD | | | SCAC4 |
| 4003 | FLUL | FLEET FUEL INC | | | SCAC4 |
| 4004 | FLUM | FLUMAR TRANSPORTES FLUVIAS E MARITI | | | SCAC3 |
| 4005 | FLUN | FLETEROS UNIDOS DEL NORTE SA DE CV | | | SCAC4 |
| 4006 | FLUU | FLUORCHEMIE STULLN GMBH | | D | BIC |
| 4007 | FLUU | FLUORCHEMIE STULLN GMBH | | | SCAC4 |
| 4008 | FLUV | FLUSHING VAN & STORAGE CO, INC | | | SCAC3 |
| 4009 | FLV | Flight, Joint-Stock Company | Callsign: Belouga, | RUS | AVCODES |
| 4010 | FLVH | FLAV O RICH DAIRIES LLC | | | SCAC4 |
| 4011 | FLVI | FLAVORLAND INDUSTRIES INC | | | SCAC3 |
| 4012 | FLVN | FYE LOGGING & VENEER | | | SCAC3 |
| 4013 | FLVN | FYE LOGGING & VENEER | | | SCAC4 |
| 4014 | FLVO | FLOVAL OIL CORPORATION | | | SCAC4 |
| 4015 | FLVP | FLAVOUR PICT PRODUCE | | | SCAC4 |
| 4016 | FLVR | FLAVOUR VINTAGE | | | SCAC4 |
| 4017 | FLVT | FORREST LIVESTOCK | | | SCAC4 |
| 4018 | FLW | Flowair Aviation | Callsign: Quickflow, | F | AVCODES |
| 4019 | FLW | FLowair Aviation | | | ICAO1 |
| 4020 | FLW | FORT LEONARD WOOD UTILITY RAILROAD | | | PWRC |
| 4021 | FLWB | FRENCH LICK, WEST BADEN & SOUTHERN RAILWAY | | | PWRC |
| 4022 | FLWE | FLEETWAY EXPRESS INC | | | SCAC3 |
| 4023 | FLWF | FLEETWOOD FORWARDING LTD | | | SCAC3 |
| 4024 | FLWG | FLEETWOOD LOGISTICS INC | | | SCAC4 |
| 4025 | FLWI | FLEETWAY CEMENT SERVICE INC | | | SCAC3 |
| 4026 | FLWK | FLEETWOOD TRUCKING INC | | | SCAC3 |
| 4027 | FLWL | FLOWERS OIL COMPANY | | | SCAC4 |
| 4028 | FLWM | FLOWERS AMERICAN TRANSFER & MOVING | | | SCAC3 |
| 4029 | FLWM | FRANSSEN, LESLIE WILLIAM | | | SCAC4 |
| 4030 | FLWO | FLEETWAY TRUCKING INC | | | SCAC3 |
| 4031 | FLWO | FALLS AND WEBB OIL INC | | | SCAC4 |
| 4032 | FLWP | FLATEGRAFF WOOD PRODUCTS INC | | | SCAC3 |
| 4033 | FLWQ | FLOWERS STOCKTON-LODI FAST FREIGHT | | | SCAC3 |
| 4034 | FLWR | FLOWERS TRANSFER CORPORATION | | | SCAC3 |
| 4035 | FLWS | FLOWERS TRUCK SERVICE | | | SCAC3 |
| 4036 | FLWS | FLOWERS TRUCK SERVICE INC | | | SCAC4 |
| 4037 | FLWT | FLOWERS TRANSPORTATION INC | | | SCAC3 |
| 4038 | FLX | Florida Express, Inc. | Callsign: Flexair, | USA | AVCODES |
| 4039 | FLX | Flight Express, Inc. | Callsign: Flight Express, ICAO designator changed from EXR | USA | AVCODES |
| 4040 | FLX | Flight Express | | | ICAO1 |
| 4041 | FLX | Finkbine Lumber Co. | 8/1920 | | NAKINA |
| 4042 | FLX | FINKBINE LUMBER CO. | | | PWRC |
| 4043 | FLXA | FLEET TRANSIT INC | | | SCAC4 |
| 4044 | FLXB | FULLER TRANSPORT LLC | | | SCAC4 |
| 4045 | FLXC | FLEXI-VAN LEASING, INC. | | | PWRC |
| 4046 | FLXC | FREIGHT LINKS EXPRESS | | | SCAC3 |
| 4047 | FLXC | FLEXI-VAN LEASING INC | | | SCAC4 |
| 4048 | FLXD | FLEXSTEEL INDUSTRIES INC | | | SCAC4 |
| 4049 | FLXE | FREIGHT LINE EXPRESS TRUCKING | | | SCAC4 |
| 4050 | FLXF | FLEXIBLE FLYER TRANSIT COMPANY | | | SCAC3 |
| 4051 | FLXH | FLOUR EXPRESS INC | | | SCAC4 |
| 4052 | FLXI | FELIX TRUCKING | | | SCAC3 |
| 4053 | FLXI | FELIX TRUCKING COMPANY | | | SCAC4 |
| 4054 | FLXI | The Flxible Co | | USA | TRAFFIC |
| 4055 | FLXJ | FLEXTRONICS | | | SCAC4 |
| 4056 | FLXM | FELIX COMPANY INC | | | SCAC3 |
| 4057 | FLXP | FLATLINERS EXPRESS INC | | | SCAC4 |
| 4058 | FLXQ | FELIXSTOWE SHIPPING | | | SCAC3 |
| 4059 | FLXQ | FRONTIER LOGISTIX | | | SCAC4 |
| 4060 | FLXR | FREEDOM LINE EXPRESS | | | SCAC3 |
| 4061 | FLXR | FLUX, BLAIR E | | | SCAC4 |
| 4062 | FLXS | FLEXSTEEL INDUSTRIES INC | | | SCAC3 |
| 4063 | FLXT | FLEXIBLE TRANSPORTATION INC | | | SCAC3 |
| 4064 | FLXT | FLEXIBLE TRANSPORTATION INC | | | SCAC4 |
| 4065 | FLXU | FLEXI-VAN LEASING, INC. | | | PWRC |
| 4066 | FLXU | Flexi-Van Leasing | | | RSRV |
| 4067 | FLXU | GENSTAR CONTAINER CORPORATION | | | SCAC4 |
| 4068 | FLXV | FLATLANDER TRANSPORT LTD | | | SCAC4 |
| 4069 | FLXW | FLEXIBLE WAREHOUSING | | | SCAC3 |
| 4070 | FLXY | FEC HIGHWAY SERVICES LLC | | | SCAC4 |
| 4071 | FLXZ | FLEXI-VAN LEASING, INC. | | | PWRC |
| 4072 | FLXZ | Flexi-Van Leasing | | | RSRV |
| 4073 | FLXZ | FLEXI-VAN LEASING, INC. | | | SCAC3 |
| 4074 | FLY | Skyways Enterprise AB | IATA: F3, Callsign: Flying, Name changed from Flying Enterprise AB then changed to Fly Me Sweden AB | S | AVCODES |
| 4075 | FLY | Flying Enterprise AB | IATA: F3, Callsign: Flying, Name changed to Skyways Enterprise AB | S | AVCODES |
| 4076 | FLY | FlyMe Sweden AB | IATA: F3, Callsign: Flybird, IATA designator changed to SH | S | AVCODES |
| 4077 | FLY | FlyMe Sweden AB | IATA: SH, Callsign: Flybird, Founded in 2003. Commenced operations on 01 March 2004. Ceased operations on 02 March 2007. | S | AVCODES |
| 4078 | FLY | Flygo S.L. | | E | AVCODES |
| 4079 | FLY | Fly Me Sweden | IATA: SH | | ICAO1 |
| 4080 | FLYA | FLYIN A J TRANSPORT INC | | | SCAC3 |
| 4081 | FLYA | FLETES Y ACARREOS ALCARAZ | | | SCAC4 |
| 4082 | FLYD | FLOYD, JOSEPH | | | SCAC3 |
| 4083 | FLYG | FLYING CROWN TRUCKING | | | SCAC3 |
| 4084 | FLYH | FLYING H TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 4085 | FLYJ | FLYING J TRUCKING LTD | | | SCAC3 |
| 4086 | FLYJ | FLYING J TRUCKING LTD | | | SCAC4 |
| 4087 | FLYK | FLYING K TRANSPORTATION | | | SCAC3 |
| 4088 | FLYL | FLYING L ENTERPRISES | | | SCAC3 |
| 4089 | FLYL | FLETES YAEL | | | SCAC4 |
| 4090 | FLYM | FLYUMS BARGE SERVICE | | | SCAC3 |
| 4091 | FLYN | FLYNN TRUCKING CO INC | | | SCAC3 |
| 4092 | FLYN | FLYING G RANCH | | | SCAC4 |
| 4093 | FLYP | FLYNN TRANSPORT INC | | | SCAC3 |
| 4094 | FLYP | FLYNN TRANSPORT INC | | | SCAC4 |
| 4095 | FLYR | FLYING R TRUCK CO | | | SCAC3 |
| 4096 | FLYT | FLYING T TRANSPORT INC | | | SCAC3 |
| 4097 | FLYT | Flytoget AS | | NO | VKM |
| 4098 | FLYV | FLORDIA YACHT MOVERS INC | | | SCAC3 |
| 4099 | FLYW | FLYING W | | | SCAC3 |
| 4100 | FLYX | Frank L. Young Co. | 8/1920-7/1923 | | NAKINA |
