- Lancaster Municipal AirportIdent: K73CServes: Lancaster
- Lance AirportIdent: 9PA0Serves: Parker Ford
- Land AirportIdent: CO82Serves: Keenesburg
- Land's Inn Ranch AirportIdent: 49ORServes: Dayville
- Landeis AirstripIdent: 25NDServes: Mandan
- Landers Loop AirportIdent: AR89Serves: Dover
- Landers Ranch AirportIdent: 1TS8Serves: Colorado City
- Landgren Ranch AirportIdent: 40NEServes: Bartlett
- Landing At River'S EdgeIdent: 98TNServes: Blaine
- Landing Pointe AirportIdent: US-1193Serves: Billings
- Landing Zone MustangIdent: 0TX8Serves: Kosse
- Landings Condominium AirportIdent: 82ISServes: Huntley
- Landings East Sylvania AirportIdent: 76GAServes: Sylvania
- Landis AirportIdent: VG16Serves: Patrick Springs
- Landmark Manufacturing Corporation AirportIdent: 1MO4Serves: Gallatin
- Landmark US Forest Service AirportIdent: 0U0Serves: Landmark
- Lane AirparkIdent: KT54Serves: Rosenberg
- Lanes LandingIdent: 67SCServes: Ruffin
- Lanett Municipal AirportIdent: K7A3Serves: Lanett
- Laney Farm AirportIdent: 1TX5Serves: Hale Center
- Laneys AirportIdent: N92Serves: Maiden
- Lang Flying Service AirportIdent: MS77Serves: Inverness
- Lang Ranch AirportIdent: 84XSServes: Mountain Home
- Langlade County AirportIdent: KAIGServes: Antigo
- Langton AirstripIdent: MT60Serves: Polebridge
- Lanham FieldIdent: 04IDServes: Emmett
- Lanni FieldIdent: 18NCServes: Lenoir
- Lanning Ranch AirportIdent: MT50Serves: Alzada
- Lanseair Farms AirportIdent: MD97Serves: La Plata
- Lansing Municipal AirportIdent: KIGQServes: Chicago
- Lantana Ranch AirportIdent: 01NVServes: Yerington
- Larew AirportIdent: WV53Serves: Newburg
- Largo Base AirportIdent: 5NA2Serves: Portland
- Larimore Municipal AirportIdent: 2L1Serves: Larimore
- Larkin AirportIdent: 06IDServes: Kuna
- Larned Pawnee County AirportIdent: KLQRServes: Larned
- Larrabee Farm AirportIdent: NE08Serves: Lamar
- Larry Land AirportIdent: US-13066Serves: Only
- Lars/Private AirportIdent: PA33Serves: Athens
- Larsen Bay AirportIdent: PALBServes: Larsen Bay
- Larson AirportIdent: 5WI4Serves: Marinette
- Larson AirportIdent: 6ND2Serves: Fullerton
- Larson AirportIdent: WI91Serves: Larsen
- Las Arenas Earth and Sky Observatory AirportIdent: US-4765Serves: Alamosa
- Las Mesitas AirportIdent: US-12851Serves: Antonito
- Las Serpientes AirportIdent: CN19Serves: Knightsen
- Las Trancas AirportIdent: 17CLServes: Davenport
- Laska AirportIdent: 3NK4Serves: Jamestown
- Lasley Private AirportIdent: 6OK8Serves: Eakly
- Last Chance Ranch AirportIdent: 3FD0Serves: Lake Placid
- Last Resort AirportIdent: 1TA4Serves: Crockett
- Latham Park Aero Estates AirportIdent: LL81Serves: Rockford
- Lathrop FieldIdent: 17WTServes: Davenport
- Laub AirportIdent: 3AK7Serves: Willow
- Lauppes StripIdent: CA22Serves: Sacramento
- Laura's Landing AirportIdent: 22MDServes: Hagerstown
- Laurel Hill Farms AirportIdent: 2SC7Serves: McClellanville
- Laurel Municipal AirportIdent: 08NEServes: Laurel
- Laurel Municipal AirportIdent: K6S8Serves: Laurel
- Laurens County AirportIdent: KLUXServes: Laurens