| ICAO | IATA | NAME |
|---|
| LAA | LN | Libyan Arab Airlines |
| LAB | JF | L.A.B. Flying Service |
| LAC | | Lockeed Aircraft Corporation |
| LAD | | Lebanon Airport Development Corporation |
| LAF | | Latvian Air Force |
| LAG | | Aerovias De Lagos |
| LAH | | L A Helicopter |
| LAJ | KJ | British Mediterranean Airways |
| LAL | | Labrador Airways |
| LAM | LM | Linhas Aéreas de Moçambique |
| LAN | LA | LAN Airlines |
| LAO | QV | Lao Airlines |
| LAP | PZ | TAM Mercosur |
| LAQ | LQ | Lebanese Air Transport |
| LAR | | Lawrence Aviation |
| LAT | | Lebanese Air Transport (Charter) |
| LAU | | Líneas Aéreas Suramericanas |
| LAW | | Link Airways of Australia |
| LAY | | Layang-Layang Aerospace |
| LBC | LV | Albanian Airlines |
| LBH | | Laker Airways (Bahamas) |
| LBI | | Albisa |
| LBQ | | Quest Diagnostics |
| LBR | | Elbe Air Transport |
| LBT | BJ | Nouvel Air Tunisie |
| LBW | | Albatros Airways |
| LBY | LZ | Belle Air |
| LCA | | Leconte Airlines |
| LCB | | LC Busre |
| LCC | | The Lancair Company |
| LCD | ZE | Lineas Aereas Azteca |
| LCG | | Lignes Aeriennes Congolaises |
| LCH | | Lynch Flying Service |
| LCM | | Lineas Aereas Comerciales |
| LCN | | Lineas Aereas Canedo LAC |
| LCO | | LAN Cargo |
| LCR | | Libyan Arab Air Cargo |
| LCS | | RAF Leuchars |
| LCT | | Compania De Actividades Y Servicios De Aviacion |
| LCY | | London City Airport Jet Centre |
| LDA | NG | Lauda Air |
| LDE | | LADE - Lineas Aereas Del Estado |
| LDG | | Aerolineas Aereas Ejecutivas De Durango |
| LDI | | Lauda Air Italy |
| LDL | | Aerologic |
| LDN | | Al-Donas Airlines |
| LDR | | Aero Lider |
| LEA | | Unijet |
| LEB | | Lebap |
| LEC | | Linex |
| LED | | Blom Geomatics |
| LEE | | Leeming Flying Training Unit |
| LEG | | The Army Aviation Heritage Foundation |
| LEJ | | FSH Luftfahrtunternehmen |
| LEL | | Leonsa De Aviacion |
| LEM | | Aleem |
| LEN | | Lentini Aviation |
| LEP | | Laughlin Express |
| LER | 8z | Linea Aerea de Servicio Ejecutivo Regional |
| LET | | Aerolineas Ejecutivas |
| LEU | | Lions-Air |
| LFA | | Air Alfa |
| LFC | | Aero Control Air |
| LFE | | Luxflight Executive |
| LFI | | National Airways Corporation |
| LFL | | Executive Air |
| LFO | | Deutsches Zentrum fur Luft-und Raumfahrt EV |
| LFP | | Alfa Aerospace |
| LFR | | Atlantic Airfreight Aviation |
| LFT | | Aerolift Company |
| LGA | N6 | Lagun Air |
| LGD | | Legend Airlines |
| LGL | LG | Luxair |
| LGN | | Aerolaguna |
| LGT | | Longtail Aviation |
| LGU | | Servicios Aereos Ejecutivos De La Laguna |
| LGW | HE | Luftfahrtgesellschaft Walter |
| LHC | | London Helicopter Centres |
| LHN | EO | Express One International |
| LHR | | Al Ahram Aviation |
| LHS | | Luhansk |
| LHT | | Lufthansa Technik |
| LIA | LI | Leeward Islands Air Transport |
| LIB | | Ploizeihubschrauberstaffel Hamburg |
| LID | D4 | Alidaunia |
| LIE | | Al-Dawood Air |
| LIF | | Rocky Mountain Holdings |
| LIJ | | Lineas Aereas San Jose |
| LIL | TE | FlyLal |
| LIQ | | Lid Air |
| LIR | | Minsk Aircraft Overhaul Plant |
| LIS | | Eastern Express |
| LIV | | Air Livonia |
| LJA | | Air Jamahiriya Company |
| LJY | | L J Aviation |
| LKA | | Lao Capricorn Air |
| LKD | | Lignes Aeriennes Du Tchad |
| LKE | | Lucky Air |
| LKL | | Lakeland Aviation |
| LKN | IK | Lankair |
| LKP | | American Aviation |
| LKR | | Laker Airways |
| LKS | | Airlink Solutions |
| LKW | | Top Sky International |
| LKY | | Air Solutions |
| LLA | | Servico Leo Lopex |
| LLB | LB | Lloyd Aereo Boliviano |
| LLL | | Lao Air Company |
| LLM | YL | Yamal Airlines |
| LLO | | Operation Enduring Freedom |
| LLR | CD | Alliance Air |
| LLS | | Servicios Aereos Estrella |
| LMA | | Aerolima |
| LMC | | Linea Aerea Mexicana de Carga |
| LME | | Lignes Mauritaniennes Air Express |
| LMG | | South African Air Force |
| LMJ | | Masterjet |
| LMK | | Grantex Aviation |
| LML | | Alamia Air |
| LMN | | Lineas Aereas Monarca |
| LMO | | Sky Limo Corporation |
| LMP | | Air Plus Argentina |
| LMR | | Lamra |
| LMS | | Lomas Helicopters |
| LMT | | Almaty Aviation |
| LMX | | Aerolineas Mexicanas J S |
| LMY | | Air Almaty |
| LMZ | | Air Almaty ZK |
| LNA | | Lnair Air Services |
| LNC | | LAN Dominica |
| LNE | XL | Aerolane |
| LNG | | Lockheed Martin Aeronautics Company |
| LNI | JT | Lion Air |
| LNK | | Airlink |
| LNP | L7 | Linea Aerea SAPSA |
| LNT | | Aerolineas Internacionales |
| LNX | | London Executive Aviation |
| LOD | | Malmoe Air Taxi |
| LOF | AX | Trans States Airlines |
| LOG | | Logan Air |
| LOK | | Alok Air |
| LOP | | Linton-on-Ouse Flying Training Unit |
| LOR | | Leo-Air |
| LOS | | Lossiemouth Flying Training Unit |
| LOT | LO | LOT Polish Airlines |
| LOU | | Air Saint Louis |
| LOV | | London Flight Centre (Stansted) |
| LPA | | Pal Aerolineas |
| LPC | | Alpine Aviation |
| LPD | | UK Royal/HRH Duke of York |
| LPE | LP | LAN Peru |
| LPL | | Lease-a-Plane International |
| LPN | L7 | Laoag International Airlines |
| LPR | MJ | LÃÂÂneas Aéreas Privadas Argentinas |
| LPV | A6 | Air Alps Aviation |
| LRA | | Little Red Air Service |
| LRB | | L R Airlines |
| LRC | LR | LACSA |
| LRD | | Laredo Air |
| LRO | | Alrosa-Avia |
| LRR | | Lorraine Aviation |
| LRS | | SANSA |
| LRT | | Lincoln Airlines |
| LRW | | Al Rida Airways |
| LSA | | LANSA |
| LSC | | Los Cedros Aviacion |
| LSE | | Linea De Aeroservicios |
| LSK | | Aurela |
| LSM | | Aerobusinessservice |
| LSP | | Spectrum Aviation Incorporated |
| LSR | | Alsair |
| LSS | | Lone Star Airlines |
| LSU | | Laus |
| LSY | | Lindsay Aviation |
| LTA | | Trans Atlantis |
| LTC | | LatCharter |
| LTE | XO | LTE International Airways |
| LTI | | Aerotaxis Latinoamericanos |
| LTL | | Benin Littoral Airways |
| LTO | L3 | LTU Austria |
| LTR | L5 | Lufttransport |
| LTS | | Flight Inspections and Systems |
| LTU | LT | LTU International |
| LTW | | Luchtvaartmaatschappij Twente |
| LUC | | Alninati Aeronautics |
| LUK | | LUKoil-Avia |
| LUR | TD | Atlantis European Airways |
| LUT | | Luft Carago |
| LUV | | Luxembourg Air Rescue |
| LUZ | | Luzair |
| LVB | | IRS Airlines |
| LVD | | Luftfahrt-Vermietungs-Dienst |
| LVG | LM | Livingston |
| LVN | | Aliven |
| LVR | | Aviavilsa |
| LVT | | La Valenciana Taxi Aereo |
| LWD | | Leisure Air |
| LXA | | Luxaviation |
| LXF | | Lynx Air International |
| LXG | L8 | Air Luxor GB |
| LXJ | | Bombardier Business Jet Solutions |
| LXO | | Luxor Air |
| LXP | LU | LAN Express |
| LXR | LK | Air Luxor |
| LYC | L2 | Lynden Air Cargo |
| LYD | | Lydd Air |
| LYF | | Lithuanian Air Force |
| LYM | | Key Lime Air |
| LYN | QH | Kyrgyzstan |
| LYT | | Apatas Air |
| LYW | | Libyan Airlines |
| LYX | | Lynx Aviation |
| LZA | | Lanza Air |
| LZB | FB | Bulgaria Air |
| LZP | | Air Ban |
| LZR | | Air Lazur |
| LZT | | Lanzarote Aerocargo |
