| A Coruña Airport | LCG | Culleredo | ES |
| Aklavik/Freddie Carmichael Airport | LAK | Aklavik | CA |
| Al Abraq International Airport | LAQ | Al Albraq | LY |
| Alas Leuser Airport | LSR | Kutacane | ID |
| Alfredo Vásquez Cobo International Airport | LET | Leticia | CO |
| Allama Iqbal International Airport | LHE | Lahore | PK |
| Almería Airport | LEI | Almería | ES |
| Altai Airport | LTI | Altai | MN |
| Arnold Palmer Regional Airport | LBE | Latrobe | US |
| Bill & Hillary Clinton National Airport/Adams Field | LIT | Little Rock | US |
| Blue Grass Airport | LEX | Lexington | US |
| Bolaang Mongondow Airport | LKM | Lolak | ID |
| Brigadier Mayor D Cesar Raul Ojeda Airport | LUQ | San Luis | AR |
| Bua - Palopo Lagaligo Airport | LLO | Palopo | ID |
| Cape Lisburne LRRS Airport | LUR | Cape Lisburne | US |
| Capital Region International Airport | LAN | Lansing | US |
| Casa De Campo International Airport | LRM | La Romana | DO |
| Caucaya Airport | LQM | Puerto Leguízamo | CO |
| Chaudhary Charan Singh International Airport | LKO | Lucknow | IN |
| Cincinnati Municipal Airport Lunken Field | LUK | Cincinnati | US |
| City of Derry Airport | LDY | Derry, Derry and Strabane | GB |
| Ciudad de Catamayo Airport | LOH | La Toma (Catamayo) | EC |
| Coronel Horácio de Mattos Airport | LEC | Lençóis | BR |
| Cotopaxi International Airport | LTX | Latacunga | EC |
| Daniel Oduber Quirós International Airport | LIR | Liberia | CR |
| Deadman's Cay Airport | LGI | Deadman's Cay | BS |
| Dehong Mangshi International Airport | LUM | Dehong (Mangshi) | CN |
| El Alto International Airport | LPB | La Paz / El Alto | BO |
| Faisalabad International Airport | LYP | Faisalabad | PK |
| Ghadames Airport | LTD | Ghadames | LY |
| Golosón International Airport | LCE | La Ceiba | HN |
| Governor José Richa Airport | LDB | Londrina | BR |
| Gran Canaria Airport | LPA | Gran Canaria Island | ES |
| Greenbrier Valley Airport | LWB | Lewisburg | US |
| Győr-Pér Airport | — | Győr | HU |
| Harry Mwanga Nkumbula International Airport | LVI | Livingstone | ZM |
| Harry Reid International Airport | LAS | Las Vegas | US |
| Iranamadu Airport | — | Kilinochchi | LK |
| Jorge Chávez International Airport | LIM | Lima | PE |
| Josefa Camejo International Airport | LSP | Paraguaná | VE |
| Kalaupapa Airport | LUP | Kalaupapa | US |
| Kamuzu International Airport | LLW | Lumbadzi | MW |
| Karel Sadsuitubun Airport | LUV | Langgur | ID |
| Kenneth Kaunda International Airport | LUN | Lusaka | ZM |
| Khujand International Airport | LBD | Khujand | TJ |
| Komodo Airport | LBJ | Labuan Bajo, Manggarai Barat | ID |
| La Crosse Regional Airport | LSE | La Crosse | US |
| La Florida Airport | LSC | La Serena-Coquimbo | CL |
| La Macarena Airport | LMC | La Macarena | CO |
| La Môle Airport | LTT | Saint-Tropez | FR |
| La Pedrera Airport | LPD | La Pedrera | CO |
| La Rochelle Île de Ré Airport | LRH | La Rochelle | FR |
| Labasa Airport | LBS | Labasa | FJ |
| Lábrea Airport | LBR | Lábrea | BR |
| Labuan Airport | LBU | Labuan | MY |
| Lachin International Airport | LHL | Lachin | AZ |
| Lafayette Regional Airport | LFT | Lafayette | US |
| Lages Airport | LAJ | Lages | BR |
| LaGuardia Airport | LGA | New York | US |
| Lahad Datu Airport | LDU | Lahad Datu | MY |
| Lake Charles Regional Airport | LCH | Lake Charles | US |
| Lake Evella Airport | LEL | — | AU |
| Lake Murray Airport | LMY | Lake Murray | PG |
| Lakeba Island Airport | LKB | Lakeba Island | FJ |
| Lakeland Linder International Airport | LAL | Lakeland | US |
| Lakselv Airport, Banak | LKL | Lakselv | NO |
| Lamap Airport | LPM | Lamap | VU |
| Lamen Bay Airport | LNB | Lamen Bay | VU |
| Lamerd Airport | LFM | Lamerd | IR |
| Lampang Airport | LPT | — | TH |
| Lampedusa Airport | LMP | Lampedusa | IT |
| Lanai Airport | LNY | Lanai City | US |
| Lancaster Airport | LNS | Lancaster | US |
| Land's End Airport | LEQ | Land's End, Cornwall | GB |
| Langkawi International Airport | LGK | Langkawi | MY |
| Langzhong Gucheng Airport | LZG | Nanchong (Langzhong) | CN |
| Lankaran International Airport | LLK | Lankaran | AZ |
| Lanzhou Zhongchuan International Airport | LHW | Lanzhou (Yongdeng) | CN |
| Laoag International Airport | LAO | Laoag City | PH |
| Lappeenranta Airport | LPP | Lappeenranta | FI |
| Lar Airport | LRR | Lar | IR |
| Laramie Regional Airport | LAR | Laramie | US |
| Larantuka Gewayentana Airport | LKA | Tiwatobi | ID |
| Laredo International Airport | LRD | Laredo | US |
| Larnaca International Airport | LCA | Larnaca | CY |
| Las Cruces International Airport | LRU | Las Cruces | US |
| Las Heras Airport | LHS | Las Heras | AR |
| Lashio Airport | LSH | Lashio | MM |
| Lasikin Airport | LKI | Lubang | ID |
| Latakia International Airport | LTK | Latakia | SY |
| Launceston Airport | LST | Launceston (Western Junction) | AU |
| Laverton Airport | LVO | Laverton | AU |
| Lawas Airport | LWY | Lawas | MY |
| Lawton Fort Sill Regional Airport | LAW | Lawton | US |
| Le Mans-Arnage Airport | LME | Le Mans, Sarthe | FR |
| Le Puy-Loudes Airfield | LPY | Chaspuzac, Haute-Loire | FR |
| Learmonth Airport | LEA | Exmouth | AU |
| Lebanon Municipal Airport | LEB | Lebanon | US |
| Leeds Bradford Airport | LBA | Leeds, West Yorkshire | GB |
| Leinster Airport | LER | — | AU |
| Leipzig/Halle Airport | LEJ | Schkeuditz | DE |
| Leknes Airport | LKN | Leknes | NO |
| León Airport | LEN | La Virgen del Camino | ES |
| Leonora Airport | LNO | Leonora | AU |
| Leros Airport | LRS | Leros Island | GR |
| Lerwick / Tingwall Airport | LWK | Lerwick, Shetland Islands | GB |
| Leshan Airport | LSG | Leshan (Wutongqiao) | CN |
| Leshukonskoye Airport | LDG | Leshukonskoye | RU |
| Lethem Airport | LTM | Lethem | GY |
| Levuka Airfield | LEV | Bureta | FJ |
| Lewiston Nez Perce County Airport | LWS | Lewiston | US |
| Lhasa Gonggar International Airport | LXA | Shannan (Gonggar) | CN |
| Liancheng Guanzhishan Airport | LCX | Longyan (Liancheng) | CN |
| Lianyungang Huaguoshan International Airport | LYG | Lianyungang | CN |
| Liberal Mid-America Regional Airport | LBL | Liberal | US |
| Libo Airport | LLB | Qiannan (Libo) | CN |
| Libreville Leon M'ba International Airport | LBV | Libreville | GA |
| Liège Airport | LGG | Grâce-Hollogne | BE |
| Lifou Airport | LIF | Lifou | NC |
| Lightning Ridge Airport | LHG | — | AU |
| Lihue Airport | LIH | Lihue, Kauai | US |
| Lijiang Sanyi International Airport | LJG | Lijiang | CN |
| Likiep Airport | LIK | Likiep Island | MH |
| Lille Airport | LIL | Lesquin | FR |
| Limbang Airport | LMN | Limbang | MY |
| Limnos Airport | LXS | Limnos Island | GR |
| Limoges Airport | LIG | Limoges/Bellegarde | FR |
| Limón International Airport | LIO | Limón | CR |
| Lincang Boshang Airport | LNJ | Lincang | CN |
| Lincoln Airport | LNK | Lincoln | US |
| Linfen Yaodu Airport | LFQ | Linfen (Yaodu) | CN |
| Linköping City Airport | LPI | Linköping | SE |
| Linyi Qiyang Airport | LYI | Linyi (Hedong) | CN |
| Linz-Hörsching Airport | LNZ | Linz | AT |
| Lipetsk Airport | LPK | Lipetsk | RU |
| Lisbon Humberto Delgado Airport | LIS | Lisbon | PT |
| Lismore Airport | LSY | Lismore | AU |
| Liupanshui Yuezhao Airport | LPF | Liupanshui (Zhongshan) | CN |
| Liuzhou Bailian Airport / Bailian Air Base | LZH | Liuzhou (Liujiang) | CN |
| Liverpool John Lennon Airport | LPL | Liverpool | GB |
| Ljubljana Jože Pučnik Airport | LJU | Zgornji Brnik | SI |
| Łódź Władysław Reymont Airport | LCJ | Łódź | PL |
| Loei Airport | LOE | — | TH |
| Loikaw Airport | LIW | Loikaw | MM |
| Lombok International Airport | LOP | Mataram (Pujut, Lombok Tengah) | ID |
| Lomé–Tokoin International Airport | LFW | Lomé | TG |
| Londolovit Airport | LNV | Londolovit | PG |
| London City Airport | LCY | London | GB |
| London Gatwick Airport | LGW | London | GB |
| London Heathrow Airport | LHR | London | GB |
| London Luton Airport | LTN | Luton, Luton | GB |
| Long Apung Airport | LPU | Long Apung-Borneo Island | ID |
| Long Banga Airport | LBP | Long Banga | MY |
| Long Beach International Airport | LGB | Long Beach | US |
| Long Lellang Airport | LGL | Long Datih | MY |
| Longana Airport | LOD | Longana | VU |
| Longnan Chengzhou Airport | LNL | Longnan (Cheng) | CN |
| Longreach Airport | LRE | Longreach | AU |
| Lonorore Airport | LNE | Lonorore | VU |
| Lopez Island Airport | LPS | Lopez | US |
| Lord Howe Island Airport | LDH | Lord Howe Island | AU |
| Loreto International Airport | LTO | Loreto | MX |
| Lorient South Brittany (Bretagne Sud) Airport | LRT | Lorient/Lann/Bihoué | FR |
| Los Angeles International Airport | LAX | Los Angeles | US |
| Los Roques Airport | LRV | Gran Roque Island | VE |
| Losuia Airport | LSA | Losuia | PG |
| Luang Namtha Airport | LXG | Luang Namtha | LA |
| Luang Phabang International Airport | LPQ | Luang Phabang | LA |
| Lubbock Preston Smith International Airport | LBB | Lubbock | US |
| Lübeck Blankensee Airport | LBC | Lübeck | DE |
| Lublin Airport | LUZ | Lublin | PL |
| Luderitz Airport | LUD | Luderitz | NA |
| Lugano Airport | LUG | Agno | CH |
| Luleå Airport | LLA | Luleå | SE |
| Lüliang Dawu Airport | LLV | Lüliang | CN |
| Luoyang Beijiao Airport | LYA | Luoyang (Laocheng) | CN |
| Luxembourg-Findel International Airport | LUX | Luxembourg | LU |
| Luxor International Airport | LXR | Luxor | EG |
| Luzhou Yunlong Airport | LZO | Luzhou (Yunlong) | CN |
| Lviv International Airport | LWO | Lviv | UA |
| Lycksele Airport | LYC | Lycksele | SE |
| Lynchburg Regional Airport - Preston Glenn Field | LYH | Lynchburg | US |
| Lyon Saint-Exupéry Airport | LYS | Colombier-Saugnieu, Rhône | FR |
| Malatya Tulga Airport | — | Malatya | TR |
| Malikus Saleh Airport | LSW | Lhok Seumawe-Sumatra Island | ID |
| Manda Airport | LAU | Lamu | KE |
| Manuel Márquez de León International Airport | LAP | La Paz | MX |
| Matsu Nangan Airport | LZN | Matsu (Nangan) | TW |
| Milano Linate Airport | LIN | Segrate (MI) | IT |
| Minchumina Airport | LMA | Minchumina | US |
| Murod Kond Airport | LTU | Latur | IN |
| Murtala Muhammed International Airport | LOS | Lagos | NG |
| Nadzab Tomodachi International Airport | LAE | Lae | PG |
| North Platte Regional Airport Lee Bird Field | LBF | North Platte | US |
| Nyingchi Mainling Airport | LZY | Nyingchi (Mainling) | CN |
| Paris-Le Bourget International Airport | LBG | Paris | FR |
| Pirineus - la Seu d'Urgel Airport | LEU | La Seu d'Urgell Pyrenees and Andorra | ES |
| Pulkovo Airport | LED | St. Petersburg | RU |
| Purdue University Airport | LAF | West Lafayette | US |
| Quatro de Fevereiro International Airport | LAD | Luanda | AO |
| Rickenbacker International Airport | LCK | Columbus | US |
| Robert Atty Bessing | LNU | Malinau | ID |
| Saint-Laurent-du-Maroni Airport | LDX | Saint-Laurent-du-Maroni | GF |
| Shannan Longzi Airport | LGZ | Shannan | CN |
| Shirak International Airport | LWN | Gyumri | AM |
| Sumburgh Airport | LSI | Lerwick, Shetland | GB |
| Svalbard Airport, Longyear | LYR | Longyearbyen | NO |
| Tarbes-Lourdes-Pyrénées Airport | LDE | Tarbes/Lourdes/Pyrénées | FR |
| Tenzing-Hillary Airport | LUA | Lukla | NP |
| Trento-Mattarello Airport | — | Trento (TN) | IT |
| Valle del Fuerte International Airport | LMM | Los Mochis | MX |
| Virgilio Barco Vargas (La Chorrera) Airport | LCR | La Chorrera | CO |
| Yichun Lindu Airport | LDS | Yichun | CN |
| Yongzhou Lingling Airport | LLF | Yongzhou | CN |
| Yuvai Semaring Airport | LBW | Long Bawan | ID |