- Kokhanok AirportIdent: PFKKServes: Kokhanok
- Kokomo Municipal AirportIdent: KOKKServes: Kokomo
- Kolb AirportIdent: 43PAServes: Spring City
- Kolibri AirportIdent: 6GA5Serves: Whitesburg
- Koliganek AirportIdent: PAJZServes: Koliganek
- Kollmeyer AirportIdent: OMU9Serves: Pilot Grove
- Kongiganak AirportIdent: PADYServes: Kongiganak
- Koons AirportIdent: 8G8Serves: Salem
- Kooskia Municipal AirportIdent: S82Serves: Kooskia
- Koppie AirportIdent: 7IS5Serves: Gilberts
- Kornegay Private AirportIdent: 53XSServes: San Benito
- Kornkven AirstripIdent: NA07Serves: Souris
- Korver AirportIdent: 16NEServes: Panama
- Kosciusko Attala County AirportIdent: KOSXServes: Kosciusko
- Kosik Private AirportIdent: 17OHServes: Kipton
- Kotlik AirportIdent: PFKOServes: Kotlik
- Koyuk Alfred Adams AirportIdent: PAKKServes: Koyuk
- Koyukuk AirportIdent: PFKUServes: Koyukuk
- Kraemer AirfieldIdent: US-7502Serves: Minneola
- Kraft AirportIdent: 2ND0Serves: Mapleton
- Kraig Farms AirportIdent: NA05Serves: Sheldon
- Kral's Personal Use Landing FieldIdent: 42MNServes: Corcoran
- Kramer AirfieldIdent: 5IG9Serves: Sulphur Springs
- Kramer AirportIdent: AK86Serves: Big Lake
- Kramer Ranch AirportIdent: 2WA8Serves: Harrington
- Krashinsky AirfieldIdent: 7TN1Serves: Pelham
- Krassel US Forest Service AirportIdent: 24KServes: Mc Call
- Krause Private AirportIdent: ND49Serves: Wyndmere
- Kreikemeier AirportIdent: 4MT1Serves: Belgrade
- Krens Farm AirportIdent: 14VAServes: Hillsboro
- Krenzers AirportIdent: 98NYServes: West Bloomfield
- Kreswell AirportIdent: LS88Serves: Eunice
- Krey Field AirportIdent: 0CL1Serves: Adelanto
- Krist Island AirportIdent: WS68Serves: Montello
- Kristijanto AirstripIdent: NE75Serves: Dakota City
- Kroelinger AirportIdent: 29NServes: Vineland
- Kroenke StripIdent: 39AKServes: Palmer
- Krohe AirportIdent: IL86Serves: Beardstown
- Kruger Aviation Ultralight FlightparkIdent: US-7837Serves: Pine Island
- Krutmeier AirportIdent: 9LL0Serves: Payson
- Krutz AirportIdent: NE18Serves: Seward
- Kubecka Aviation AirportIdent: 3XS1Serves: Palacios
- Kubecka Aviation AirportIdent: TS08Serves: Ganado
- Kubecka Flying Service Inc. AirportIdent: 6TE5Serves: Edna
- Kubik Ranch AirportIdent: US-4455Serves: Rocksprings
- Kucera Residence AirportIdent: 63AKServes: Big Lake
- Kudlacek FieldIdent: TT32Serves: Royse City
- Kuebler AirportIdent: 4IL4Serves: St Elmo
- Kulik Lake AirportIdent: PAKLServes: Kulik Lake
- Kumor AirportIdent: 2NE7Serves: Grant
- Kunda AirportIdent: PA61Serves: Collegeville
- Kuntz Restricted Landing AreaIdent: US-1080Serves: Gridley
- Kutcher-Lakeview AirportIdent: US-0937Serves: Galeton
- Kwethluk AirportIdent: PFKWServes: Kwethluk
- Kwigillingok AirportIdent: PAGGServes: Kwigillingok
- Kyles AirportIdent: WA04Serves: Snohomish
- Kyllo AirportIdent: 84NDServes: Mc Canna
- L & M AerodromeIdent: MN31Serves: Litchfield
- L Davis Ranch AirportIdent: 5XS8Serves: Brackettville
- L J Bose AirstripIdent: 67NEServes: Orleans