- Lanigan AirportIdent: CKC6Serves: Lanigan
- Lansdowne House AirportIdent: CYLHServes: Lansdowne House
- Laurel / Whittington AerodromeIdent: CLW3Serves: Laurel
- Laurie River AirportIdent: CJC8Serves: Laurie River
- Leader AirportIdent: CJD5Serves: Leader
- Leamington AirportIdent: CLM2Serves: Leamington
- Leask AirportIdent: CJH8Serves: Leask
- Lebel-sur-Quevillon AirportIdent: CSH4Serves: Lebel-sur-Quévillon
- Lemberg AirportIdent: CKJ9Serves: Lemberg
- Leoville AirportIdent: CJT9Serves: Leoville
- Lethbridge (Mercer Field)Ident: CMF3Airport type: Small airport
- Lethbridge / Anderson FieldIdent: CLA5Serves: Lethbridge
- Liege / CNRL AirportIdent: CLG3Serves: Liege
- Likely AirportIdent: CAX5Serves: Likely
- Lillooet AirportIdent: CYLIServes: Lillooet
- Lionel P. Demers Memorial AirparkIdent: CBE2Serves: Elko
- Listowel AirportIdent: CPN5Serves: Listowel
- Little Bear Lake AirportIdent: CKL6Serves: Little Bear Lake
- Little Churchill River / Dunlop's Fly-In Lodge AirportIdent: CJN7Serves: Little Churchill River
- Little Grand Rapids AirportIdent: CZGRServes: Little Grand Rapids
- Liverpool South Shore Regional AirportIdent: CYAUServes: Greenfield
- London (Pioneer Airpark)Ident: CPN8Serves: London
- Loon Lake AirportIdent: CJW3Serves: Loon Lake
- Loon River AirportIdent: CFS6Serves: Loon River
- Louise Municipal AirportIdent: CKZ6Serves: Crystal City-Pilot Mound
- Louiseville AirportIdent: CSJ4Serves: Louiseville
- Lourdes-de-Joliette AirportIdent: CSE3Serves: Notre-Dame-de-Lourdes
- Lubitz FieldIdent: CLB2Serves: Bright
- Lucan AirportIdent: CPS4Serves: Lucan
- Lucky Lake AirportIdent: CKQ5Serves: Lucky Lake
- Lumsden (Colhoun) AirportIdent: CKH8Serves: Lumsden
- Lundar AirportIdent: CKR4Serves: Lundar
- Luseland AirportIdent: CJR2Serves: Luseland
- Lutselk'e AirportIdent: CYLKServes: Lutselk'e
- Mabel Lake AirportIdent: CBF9Serves: Mabel Lake
- Macdonald AirportIdent: CJU3Serves: Macdonald
- Macgregor AirportIdent: CKF6Serves: Macgregor
- Macklin AirportIdent: CJJ8Serves: Macklin
- Madawaska Valley AirparkIdent: CNZ4Serves: Barry's Bay
- Maidstone AirportIdent: CJH3Serves: Maidstone
- Makkovik AirportIdent: CYFTServes: Makkovik
- Malcolm Island AirportIdent: CJS2Serves: Malcolm Island
- Manic-Cinq AirportIdent: CMN5Serves: Manicouagan
- Manitou AirportIdent: CKG5Serves: Manitou
- Maniwaki AirportIdent: CYMWServes: Messines
- Manning Municipal AirportIdent: CFX4Serves: Manning
- Mansfield AirportIdent: CPV4Serves: Mansfield
- Maple Creek AirportIdent: CJQ4Serves: Maple Creek
- Marek Farms AirportIdent: CFF9Serves: Marek Farms
- Margaree AirportIdent: CCZ4Serves: Margaree
- Margaret Lake AirportIdent: CFV6Serves: Margaret Lake
- Mary's Harbour AirportIdent: CYMHServes: Mary's Harbour
- Maryfield AerodromeIdent: CJQ8Serves: Maryfield
- Matawatchan AerodromeIdent: CMW3Serves: Matawatchan
- Matheson Island AirportIdent: CJT2Serves: Matheson Island
- Mattawa AirportIdent: CMA2Serves: Mattawa
- Maxville (Bourdon Farm) AirportIdent: CMB7Serves: Maxville
- Mayerthorpe AirportIdent: CEV5Serves: Mayerthorpe
- McArthur River AirportIdent: CKQ8Serves: Mcarthur River
- McBride Airport/Charlie Leake FieldIdent: CAV4Serves: McBride