- Kelleys Island Land FieldIdent: 89DServes: Kelleys Island
- Kellogg AirstripIdent: 2CD9Serves: Fort Collins
- Kellums AirportIdent: 16ISServes: Goreville
- Kelly Air FieldIdent: TT98Serves: Bells
- Kelly Air ParkIdent: CO15Serves: Elbert
- Kelly AirportIdent: 51CAServes: Lucerne Valley
- Kelly AirportIdent: K9M6Serves: Oak Grove
- Kelly FieldIdent: 3MO7Serves: Bonne Terre
- Kelso Valley AirportIdent: CN37Serves: Mojave
- Kemmerer Municipal AirportIdent: KEMMServes: Kemmerer
- Kemps Field of Dreams AirportIdent: 6OH9Serves: Covington
- Ken Ada Ranch AirportIdent: 3XS8Serves: Waller
- Ken Guidry #1 AirportIdent: LS68Serves: Abbeville
- Ken Jernstedt AirfieldIdent: K4S2Serves: Hood River
- Kenai River AirparkIdent: 1AK4Serves: Soldotna
- Kenan AirstripIdent: LA61Serves: Kaplan
- Kendall AirstripIdent: WN08Serves: Kendall
- Kendalls Lndg Area AirportIdent: MA86Serves: Windsor
- Kendallville Municipal AirportIdent: KC62Serves: Kendallville
- Kenley AirportIdent: 08OHServes: Hartford
- Kenley FieldIdent: GA61Serves: Brooks
- Kenly AirportIdent: 7NC3Serves: Kenly
- Kenmare Municipal AirportIdent: K7K5Serves: Kenmare
- Kennedy AirfieldIdent: 9NY4Serves: Kennedy
- Kennedy Intranational AirportIdent: 2GA0Serves: Newborn
- Kennedy Ranch AirportIdent: 50TXServes: Blanco
- Kennel AirstripIdent: OR04Serves: Bend
- Kennersley AirportIdent: MD23Serves: Church Hill
- Kenneth Copeland AirportIdent: K4T2Serves: Fort Worth
- Kennett Memorial AirportIdent: KTKXServes: Kennett
- Kent AirportIdent: 8CO0Serves: Wiggins
- Kent County AirportIdent: K22FServes: Jayton
- Kent Fort Manor AirportIdent: 7MD8Serves: Stevensville
- Kent State University AirportIdent: K1G3Serves: Kent
- Kent's Flying Service AirportIdent: 5LA1Serves: Moreauville
- Kentland Municipal AirportIdent: K50IServes: Kentland
- Kentmorr AirparkIdent: 3W3Serves: Stevensville
- Kentucky Dam State Park AirportIdent: KM34Serves: Calvert City
- Keokuk Municipal AirportIdent: KEOKServes: Keokuk
- Keosauqua Municipal AirportIdent: 6K9Serves: Keosauqua
- Kepes Flying FieldIdent: 1OA4Serves: Springfield
- Kephart Field AirportIdent: IN01Serves: Bargersville
- Kermizian AirportIdent: 0NY3Serves: Ohio
- Kern FieldIdent: IA48Serves: Polk City
- Kern Valley AirportIdent: KL05Serves: Kernville
- Kerrville / Kerr County Airport at Louis Schreiner FieldIdent: KERVServes: Kerrville
- Kershaw AirportIdent: AL12Serves: Montgomery
- Ketcham Landing Area AirportIdent: VT30Serves: Waitsfield
- Ketchum Ranch AirportIdent: OK97Serves: Duncan
- Kettle Moraine Airport (Closed Indefinitely)Ident: 1WN1Serves: Campbellsport
- Kewanee Municipal AirportIdent: KEZIServes: Kewanee
- Key Way AirportIdent: 19WAServes: Stevenson
- Key's Ranch AirportIdent: TX35Serves: Annona
- Keyes Ranch AirportIdent: 14TXServes: Dripping Springs
- Keyhole AirportIdent: 01WYServes: Pine Haven
- Keymar AirparkIdent: MD42Serves: Keymar
- Keysa AirportIdent: NY79Serves: Bliss
- Keystone AirportIdent: 9PA7Serves: Fort Hill
- Keystone Ranch AirportIdent: 5TE6Serves: San Angelo
- Kezer Air Ranch AirportIdent: 61TEServes: Springtown