| 3301 | FKMV | FRANK MOBILITY SYSTEMS INC | | | SCAC4 |
| 3302 | FKNC | FRANKLIN CHARTERS INC | | | SCAC3 |
| 3303 | FKNP | FRANKLIN TRANSPORTATION | | | SCAC4 |
| 3304 | FKNQ | FRANKLIN, CARY C | | | SCAC3 |
| 3305 | FKOC | FOLK OIL CO INC | | | SCAC4 |
| 3306 | FKRC | FRANKLIN RODEO COMPANY LTD | | | SCAC4 |
| 3307 | FKRD | FLYING K RANCH LTD | | | SCAC4 |
| 3308 | FKRJ | FRANKS, R J TRANSPORT LTD | | | SCAC3 |
| 3309 | FKRN | FLICK, RON TRUCKING INC | | | SCAC3 |
| 3310 | FKRR | FAULKNER TRUCKING | | | SCAC4 |
| 3311 | FKRS | F & K ROCK & SAND INC | | | SCAC3 |
| 3312 | FKRX | The Flintkote Co. of Canada Ltd. | 4/1970; eliminated 10/1971 | | NAKINA |
| 3313 | FKRX | Colas Roads, Ltd. (Flintkote Co. of Canada Ltd.) | 10/1966 | | NAKINA |
| 3314 | FKRX | The Flintkote Co. of Canada Ltd. | 1/1945-7/1965 | | NAKINA |
| 3315 | FKRX | Colas Roads, Ltd. | 7/1935; 4/1938-1/1943 | | NAKINA |
| 3316 | FKRX | Flintkote Roads, Ltd. (Colas Roads, Ltd.) | 7/1932-7/1935 | | NAKINA |
| 3317 | FKRX | Flintkote Roads, Ltd. | 7/1930 | | NAKINA |
| 3318 | FKRX | Flintkote Roads, Ltd. (Colas Roads, Ltd.) | Apr-38 | | NRHS |
| 3319 | FKRX | Flintkote Co. of Canada Ltd. | 1/52-7/65 | | NRHS |
| 3320 | FKRX | Colas Roads, Ltd. (Flintkote Co. of Canada Ltd.) | Oct-66 | | NRHS |
| 3321 | FKRX | The Flintkote Co. of Canada Ltd. | 4/70; eliminated 10/71 | | NRHS |
| 3322 | FKRX | FLINTKOTE CO. OF CANADA [COLAS ROADS, LTD.; FLINTKOTE ROADS, LTD.] | | | PWRC |
| 3323 | FKRX | FLINTKOTE COMPANY OF CANADA LTD | | | SCAC3 |
| 3324 | FKS | Omega Air Holdings LLC dba Focus Air | IATA: F2, | USA | AVCODES |
| 3325 | FKS | Focus Air | | | ICAO1 |
| 3326 | FKS | Freundeskreis Selketalbahn e.V. | Alexisbad | D | privat-bahn.de |
| 3327 | FKSE | FREERKSEN TRUCKING | | | SCAC3 |
| 3328 | FKSE | FREERKSEN TRUCKING INC | | | SCAC4 |
| 3329 | FKSF | FRANKIES FUEL LLC | | | SCAC4 |
| 3330 | FKSL | FREDERICK, STEPHEN LOGISTICS INC | | | SCAC4 |
| 3331 | FKSN | FRANKS & SON INC | | | SCAC3 |
| 3332 | FKSO | FISKE TRUCKING COMPANY | | | SCAC3 |
| 3333 | FKSO | FRANKS TRUCKING | | | SCAC4 |
| 3334 | FKSP | FRANKLIN SPECIALTY TRANSPORT INC | | | SCAC4 |
| 3335 | FKSQ | FRANKS DELIVERY SERVICE | | | SCAC3 |
| 3336 | FKSS | FRANKS SPOTTING SERVICE | | | SCAC3 |
| 3337 | FKSS | FENIKSSPED D O O BRNIK | | | SCAC4 |
| 3338 | FKST | FRANKS SCHOOL TRANSPORTATION CO INC | | | SCAC3 |
| 3339 | FKST | FOUR K'S (4K'S) TRANSPORTATION | | | SCAC4 |
| 3340 | FKSY | FREIGHT KING SYSTEMS INC | | | SCAC3 |
| 3341 | FKTA | FRANKLIN TRANSPORTATION INC | | | SCAC3 |
| 3342 | FKTA | FRANKLIN TRANSPORT | | | SCAC4 |
| 3343 | FKTC | FRANKE TRUCKING CO | | | SCAC3 |
| 3344 | FKTE | FOLKERTS, ELLERD INC | | | SCAC3 |
| 3345 | FKTG | FRANKS TRUCKING | | | SCAC3 |
| 3346 | FKTH | FIKES TRUCK LINE LLC | | | SCAC4 |
| 3347 | FKTI | FISCHKELTA TRUCKING INC | | | SCAC3 |
| 3348 | FKTI | FABRITECH KITCHENS LTD | | | SCAC4 |
| 3349 | FKTJ | FORZACK TRUCKING | | | SCAC4 |
| 3350 | FKTK | FRANKLIN TRUCKING INC | | | SCAC3 |
| 3351 | FKTL | FTL LOGISTICS LLC (GOVERNMENT) | | | SCAC4 |
| 3352 | FKTM | FALKNER, KENT TRUCKING INC | | | SCAC4 |
| 3353 | FKTN | FRANKLIN TRUCKING INC | | | SCAC3 |
| 3354 | FKTN | FRANKLIN TRUCKING INC | | | SCAC4 |
| 3355 | FKTQ | FAULK TRUCKS INC | | | SCAC4 |
| 3356 | FKTR | FRANKLIN TRUCKING INC | | | SCAC3 |
| 3357 | FKTR | FOUR (4) K TRUCKING | | | SCAC4 |
| 3358 | FKVS | FOUR K VACUUM SERVICES INC (4-K VAC | | | SCAC3 |
| 3359 | FKW | JF Air Traffic, Inc. | Callsign: Fikes, ICAO Desigantor changed to FIK w.e.f. 31 January 2023 | USA | AVCODES |
| 3360 | FKWH | FRANKLIN WAREHOUSE & CARTAGE COMPAN | | | SCAC3 |
| 3361 | FKWT | FOSTER, K W TRUCKING INC | | | SCAC3 |
| 3362 | FKXP | FASTRACK EXPRESS INC | | | SCAC3 |
| 3363 | FKZ | Fly Kumba | Callsign: Kumba, | ZW | AVCODES |
| 3364 | FL | AirTran Airways, Inc. | ICAO: TRS, Callsign: Citrus, IATA Prefix: 332, Fully integrated into Southwest Airlines on 28 December 2014. Commenced operations on 17 November 1997. ICAO designator changed from MTE. On September 27, 2010, Southwest Airlines announced they would acquire AirTran Airways. | USA | AVCODES |
| 3365 | FL | AirTran Airways, Inc. | ICAO: MTE, Callsign: Manatee, IATA Prefix: 332, ICAO designator changed to TRS | USA | AVCODES |
| 3366 | FL | Frontier Airlines | Callsign: Frontier, Ceased operations | USA | AVCODES |
| 3367 | FL | AirTran Airways, Inc. | ICAO: MTE, Callsign: Citurs, IATA Prefix: 332, ICAO designator changed to TRS | USA | AVCODES |
| 3368 | FL | Air Large European Aviation Project t/a Air Leap | ICAO: LPA, Callsign: Leap, Ceased operation on 24 January 2022 and filed for reorganisation. | S | AVCODES |
| 3369 | FL | FAMILY LINES SYSTEM | | | PWRC |
| 3370 | FL | Family Lines System | | | RSRV |
| 3371 | FL | FITCHBURG AND LEOMINSTER STREET RAI | | | SCAC4 |
| 3372 | FL | Freightliner (GB) | Freightliner is a British freight operating company, founded in 1995. It is the second largest railfreight operator, after EWS. The origins of the Freightliner concept go back to the mid-1960's British Rail under Richard Beeching. As part of an overall modernisation and rationalisation programme, British Rail began moving freight using ISO containers on flat wagons between a series of dedicated inland terminals using gantry cranes for transhipment from road to rail. Although initially intended for domestic freight, this was soon overtaken by freight between deep sea ports, such as Southampton Maritime an and inland distribution terminals associated with centres of manufacturing or population such as Birmingham Landor Street. In 1995, Freightliner was privatised as a stand alone company, being bought out by its own management. | GB | TRAFFIC |
| 3373 | FL | Freightliner | | UK | VKM |
| 3374 | FLA | Midway Express | Callsign: Palm, | USA | AVCODES |
| 3375 | FLA | Air Florida | IATA: QH, Callsign: Palm, Ceased operations on 03 July 1984. | USA | AVCODES |
| 3376 | FLA | S.C. Fly 365 Aviation S.r.l. | Callsign: Su Air, | RO | AVCODES |
| 3377 | FLA | Fly AO-Linhas Aereas, Limiteda d/b/a Fly AO Angola | IATA: EQ, | ANG | AVCODES |
| 3378 | FLA | Flite Aviation Limited t/a Flite | Callsign: Bluerock, | M | AVCODES |
| 3379 | FLA | Midway Express | | | ICAO1 |
| 3380 | FLA | Freightliner Australia | | AUS | TRAFFIC |
| 3381 | FLAA | FLEMING EQUIPMENT SERVICES INC | | | SCAC4 |
| 3382 | FLAB | FLATBUSH MOVING VAN CO, INC | | | SCAC3 |
| 3383 | FLAC | FLOOD AND ASSOCIATES | | | SCAC3 |
| 3384 | FLAC | FOX LOGISTICS | | | SCAC4 |
| 3385 | FLAD | FLATLAND FREIGHT DISTRIBUTORS, INC | | | SCAC3 |
| 3386 | FLAE | FLORIDA ASSEMBLY & DISTRIBUTION INC | | | SCAC3 |
| 3387 | FLAG | FLAUGH, C P, COMPANY, INC | | | SCAC3 |
| 3388 | FLAG | FLAGSTONE LOGISTICS, LLC | | | SCAC4 |
| 3389 | FLAG | | City: Frankfurt/M | D | TRAFFIC |
| 3390 | FLAI | FLUID TRANSPORTS INC | | | SCAC4 |
| 3391 | FLAIR | Fürstlich Liechtensteinische Eisenbahn-Romantik Stiftung | | AT | VKM |
| 3392 | FLAJ | FAST LINE TRUCKING INC | | | SCAC4 |
| 3393 | FLAL | FLORAL PLANT GROWERS LLC | | | SCAC4 |
| 3394 | FLAM | FLAMINGO HAULING & RIGGING CO | | | SCAC3 |
| 3395 | FLAM | FLAMINI TRUCKING CO | | | SCAC4 |
| 3396 | FLAM | Flamsbana | | N | TRAFFIC |
| 3397 | FLAN | FLO TRANS | | | SCAC4 |
| 3398 | FLAP | FLASH FREIGHT SYSTEMS | | | SCAC4 |
| 3399 | FLAQ | FOUR (4) LANDS TRANSPORTATION CO | | | SCAC4 |
| 3400 | FLAR | FLORIDA REFRIGERATED SERVICE | | | SCAC3 |
