| 1 | LF | Linjeflyg AB | ICAO: LIN, Callsign: Swedline, Merged into SAS | S | AVCODES |
| 2 | LF | Lufthansa Cargo (India) | ICAO: LCI, Callsign: Lufthansa India, Designator LF* recalled by IATA | IND | AVCODES |
| 3 | LF | Nordic East Airlink AB | ICAO: NDC, Callsign: Nordic, Name changed to Nordic Airlink Holding AB dba FlyNordic. Designator changed from 9R*. IATA designator changed from 7I w.e.f. 30 December 2002. | S | AVCODES |
| 4 | LF | Corporate Flight Management | ICAO: VTE, Callsign: Volunteer, Name changed to Corporate Flight Management t/a Contour Airlines. | USA | AVCODES |
| 5 | LF | Nordic Airlink Holding AB dba FlyNordic | ICAO: NDC, Callsign: Nordic, Purchased by and merged in Norwegian Air Shuttle. Name changed from Nordic East Airlink AB. Designator changed from 9R*. IATA designator changed from 7I w.e.f. 30 December 2002. | S | AVCODES |
| 6 | LF | Lao Central Airlines Public Co., Ltd | ICAO: LCI, Callsign: Lao Central, IATA Prefix: 971, Designator LF recalled by IATA. Founded in 2010 | LAO | AVCODES |
| 7 | LF | Corporate Flight Management d/b/a Contour Airlines | ICAO: VTE, Callsign: Volunteer, Name changed from Corporate Flight Management. | USA | AVCODES |
| 8 | LFA | Air Alfa Havayollan Ve Tie A.S. | IATA: H7, IATA Prefix: 770, Suspended operations on 17 November 2002. Designator H7 reinstated by IATA | TR | AVCODES |
| 9 | LFA | Aerosim Academy, LLC. | Callsign: Bucky, Name changed to L3Harris Airline Academy. | USA | AVCODES |
| 10 | LFA | L3Harris Airline Academy | Callsign: Bucky, Name changed from Aerosim Academy, LLC. | USA | AVCODES |
| 11 | LFA | Air Alfa | | | ICAO1 |
| 12 | LFAA | LAFARGE OF NORTH AMERICA | | | SCAC4 |
| 13 | LFAB | LIDOR CO | | | SCAC3 |
| 14 | LFAB | LEGENDARY LOGCRAFTERS LIMITED | | | SCAC4 |
| 15 | LFAG | LOGOS FRACHT AG | | | SCAC3 |
| 16 | LFAI | LANDAU FINE ART INC | | | SCAC4 |
| 17 | LFAK | LA FERME AVICOLE D OKA | | | SCAC4 |
| 18 | LFAL | LITTLE FALLS FUEL | | | SCAC4 |
| 19 | LFAM | LIFELINE AMBULANCE SYSTEMS INC | | | SCAC3 |
| 20 | LFAM | LA FERM DUNELM FARM INC | | | SCAC4 |
| 21 | LFAR | LANPHIER FARMS INC | | | SCAC3 |
| 22 | LFAS | LINCOLN FRT-AMERICAN SHIP | | | SCAC3 |
| 23 | LFAX | L.F. Anderson | added 10/1974; 1/1975-1/1980; eliminated 7/1986 | | NAKINA |
| 24 | LFAX | L.F. Anderson | added 10/74; 1/75-1/80; eliminated 7/86 | | NRHS |
| 25 | LFAX | L. F. ANDERSON | | | PWRC |
| 26 | LFAX | L.F. Anderson | | | RSRV |
| 27 | LFBC | LEFANTE BUS CO | | | SCAC3 |
| 28 | LFC | Aero Control Air Ltd. | Callsign: Life Flight Canada, | CDN | AVCODES |
| 29 | LFC | Aero Control Air | | | ICAO1 |
| 30 | LFC | LONGVIEW FIBRE CO. | | | PWRC |
| 31 | LFCC | First Capital Citybus | | GB | TRAFFIC |
| 32 | LFCD | Linea Coahuila Duranga S.A. de C.V. | added 1/2002; eliminated 7/2002; 7/2005; added 1/2008 | | NAKINA |
| 33 | LFCD | Lines Coahuila Durango C.V. de C.V. | 7/2000 | | NAKINA |
| 34 | LFCD | Lines Coahuila Durango C.V. de C.V. | Jul-00 | | NRHS |
| 35 | LFCD | LINEA COAHUILA DURANGO SA DE CV | | | PWRC |
| 36 | LFCD | Linea Coahuila Durango de CV | | | RSRV |
| 37 | LFCD | LINEA COAHUILA DURANGO SA DE CV | | | SCAC4 |
| 38 | LFCI | LOUD FUEL COMPANY INC | | | SCAC4 |
| 39 | LFCL | LASQUETI FISHING COMPANY LTD | | | SCAC4 |
| 40 | LFCM | LIND FUEL COMPANY | | | SCAC4 |
| 41 | LFCQ | LOCAL FUEL CO INC | | | SCAC4 |
| 42 | LFCS | LUCCAS FREEZER & COLD STORAGE INC | | | SCAC3 |
| 43 | LFCS | LAURE, FRANCE COSMETIQUES (1970) IN | | | SCAC4 |
| 44 | LFCU | HONGKONG SHANGHAI LIFENG LEASING COMPANY LIMITED | | PRC | BIC |
| 45 | LFCW | First Centrewest | | GB | TRAFFIC |
| 46 | LFCX | Liquefreeze Corp. of America | added 1/1962; eliminated 7/1963 | | NAKINA |
| 47 | LFCX | Liquefreeze Corp. of America | added 1/62; eliminated 7/63 | | NRHS |
| 48 | LFCX | LIQUIFREEZE CORP. OF AMERICA | | | PWRC |
| 49 | LFCY | LITCHFIELD FUEL COMPANY | | | SCAC4 |
| 50 | LFCZ | LYON FARM CENTER | | | PWRC |
| 51 | LFDA | LIVE FREE OR DIE ANTIQUE TOOL AUCTI | | | SCAC4 |
| 52 | LFDE | LAFOND EXPRESS | | | SCAC3 |
| 53 | LFDI | LIA, F. D., INC. | | | SCAC3 |
| 54 | LFDI | LIA, F D INC | | | SCAC4 |
| 55 | LFDL | LITTLE FALLS DRAY LINE | | | SCAC3 |
| 56 | LFDL | LITTLE FALLS DRAY INC | | | SCAC4 |
| 57 | LFDM | LA FLOR DE MAYO EXPRESS INC | | | SCAC3 |
| 58 | LFDN | LUSAMERICA FOODS INC | | | SCAC4 |
| 59 | LFDP | LA FERME DU PLATON INC | | | SCAC4 |
| 60 | LFDR | LIFEDREAM MARINE COMPANY LIMITED | | | SCAC3 |
| 61 | LFDR | LAZY F-D RANCHES AND HAY SALES LTD | | | SCAC4 |
| 62 | LFDS | LORDS FOOD DISTRIBUTION SERVICE | | | SCAC3 |
| 63 | LFDV | LAPEER FABRICATORS (DIVISION VOPLEX | | | SCAC3 |
| 64 | LFE | Luxflight Executive | Callsign: Lux Express, Ceased operstaions | L | AVCODES |
| 65 | LFE | Life Air Linhas Aereas S.A. | Callsign: Life Air, | BR | AVCODES |
| 66 | LFE | Luxflight Executive | | | ICAO1 |
| 67 | LFEK | LES FERMES KAVALIER 2000 INC | | | SCAC4 |
| 68 | LFEL | LIFELINE TRANSPORTATION INC | | | SCAC4 |
| 69 | LFEP | LITTLE FREIGHT EXPRESS INC | | | SCAC3 |
| 70 | LFEP | LANDMARK FEEDS INC | | | SCAC4 |
| 71 | LFET | LOWER 48 TRANSPORT SERVICE INC | | | SCAC4 |
| 72 | LFFC | LIFSCHULTZ FAST FREIGHT CORP | | | SCAC3 |
| 73 | LFFC | LOUISIANA FINE FOODS CO INC | | | SCAC4 |
| 74 | LFFI | LTL FREIGHT FORWARDERS INC | | | SCAC3 |
| 75 | LFFI | LIGHTNING FAST FREIGHT INC | | | SCAC4 |
| 76 | LFFL | LAFRANCE FREIGHT LINES INC | | | SCAC3 |
| 77 | LFFL | LOFF LLC | | | SCAC4 |
| 78 | LFFM | LYND FRUIT FARM INC | | | SCAC4 |
| 79 | LFFW | LACONIC FREIGHT FORWARDING CO., LTD | | | SCAC3 |
| 80 | LFFW | LACONIC FREIGHT INTERNATIONAL LTD | | | SCAC4 |
| 81 | LFFZ | BNSF RAILWAY (BURLINGTON NORTHERN AND SANTA FE RAILWAY) | | | PWRC |
| 82 | LFFZ | BNSF Railway | | | RSRV |
| 83 | LFG | Let's Jett, Inc. | Callsign: Lets Jett, | USA | AVCODES |
| 84 | LFGC | LES FUMOIRS GASPE CURED INC | | | SCAC4 |
| 85 | LFGM | LIFEGUARD MARITIME COMPANY SA | | | SCAC3 |
| 86 | LFGQ | LA FERME GROVER INC | | | SCAC4 |
| 87 | LFGRO | LAFARGE CIMENT (ROMANIA) SA | | RO | VKM |
| 88 | LFGU | P&R EQUIPMENT & FINANCE CORP. | | CH | BIC |
| 89 | LFH | Alfa Histria d.o.o. | Callsign: Histria, Founded in 1994. Ceased operations. | SLO | AVCODES |
| 90 | LFHR | LEGS FOR HIRE | | | SCAC3 |
| 91 | LFHR | LARSEN FARMS HAY TERMINAL LLC | | | SCAC4 |
| 92 | LFHS | LITTLES FARM & HOME SUPPLY INC | | | SCAC3 |
| 93 | LFI | National Airways Corporation (Helicopters) Ltd, South Africa | Callsign: Aeromed, | ZA | AVCODES |
| 94 | LFI | National Airways Corporation | | | ICAO1 |
| 95 | LFI | LFI - La Ferrovia Italiana | | I | TRAFFIC |
| 96 | LFI | Transporto Ferroviario Toscano | | IT | VKM |
| 97 | LFIA | LONESTAR FOXHALL LLC | | | SCAC4 |
| 98 | LFIC | LANCASTER FOODS INC | | | SCAC4 |
| 99 | LFID | LIQUID FEEDS INTERNATIONAL 1986 LTD | | | SCAC4 |
| 100 | LFIM | LUMUNICK FARM INC | | | SCAC4 |
