- Jorge Wilsterman International AirportIdent: SLCBCountry: Bolivia
- Jose Maria Córdova International AirportIdent: SKRGCountry: Colombia
- Josep Tarradellas Barcelona-El Prat AirportIdent: LEBLCountry: Spain
- Joshua Mqabuko Nkomo International AirportIdent: FVBUCountry: Zimbabwe
- José Joaquín de Olmedo International AirportIdent: SEGUCountry: Ecuador
- José Martí International AirportIdent: MUHACountry: Cuba
- Joya Andina International AirportIdent: SLUYCountry: Bolivia
- João Paulo II AirportIdent: LPPDCountry: Portugal
- Juan Gualberto Gomez International AirportIdent: MUVRCountry: Cuba
- Juan Manuel Gálvez International AirportIdent: MHROCountry: Honduras
- Juan Mendoza International AirportIdent: SLORCountry: Bolivia
- Juan Santamaría International AirportIdent: MROCCountry: Costa Rica
- Juanda International AirportIdent: WARRCountry: Indonesia
- Juba International AirportIdent: HJJJCountry: South Sudan
- Julius Nyerere International AirportIdent: HTDACountry: Tanzania
- Kabul International AirportIdent: OAKBCountry: Afghanistan
- Kadena Air BaseIdent: RODNCountry: Japan
- Kaduna International AirportIdent: DNKACountry: Nigeria
- Kagoshima AirportIdent: RJFKCountry: Japan
- Kahului International AirportIdent: PHOGCountry: United States
- Kalibo International AirportIdent: RPVKCountry: Philippines
- Kamuzu International AirportIdent: FWKICountry: Malawi
- Kannur International AirportIdent: VOKNCountry: India
- Kansai International AirportIdent: RJBBCountry: Japan
- Kansas City International AirportIdent: KMCICountry: United States
- Kaohsiung International AirportIdent: RCKHCountry: Taiwan
- Karlovy Vary AirportIdent: LKKVCountry: Czechia
- Karlsruhe Baden-Baden AirportIdent: EDSBCountry: Germany
- Kasane International AirportIdent: FBKECountry: Botswana
- Kashgar Laining International AirportIdent: ZWSHCountry: China
- Kassel AirportIdent: EDVKCountry: Germany
- Katowice Wojciech Korfanty International AirportIdent: EPKTCountry: Poland
- Kaunas International AirportIdent: EYKACountry: Lithuania
- Kavala Alexander the Great International AirportIdent: LGKVCountry: Greece
- Kayseri Erkilet International AirportIdent: LTAUCountry: Türkiye
- Kazan International AirportIdent: UWKDCountry: Russia
- Kefalonia International Airport "Anna Pollatou"Ident: LGKFCountry: Greece
- Keflavik International AirportIdent: BIKFCountry: Iceland
- Kelowna International AirportIdent: CYLWCountry: Canada
- Kempegowda International Airport BengaluruIdent: VOBLCountry: India
- Kenneth Kaunda International AirportIdent: FLLSCountry: Zambia
- Khartoum International AirportIdent: HSSKCountry: Sudan
- Khrabrovo AirportIdent: UMKKCountry: Russia
- Khujand International AirportIdent: UTDLCountry: Tajikistan
- Kigali International AirportIdent: HRYRCountry: Rwanda
- Kilimanjaro International AirportIdent: HTKJCountry: Tanzania
- Kimberley AirportIdent: FAKMCountry: South Africa
- King Abdulaziz Air BaseIdent: OEDRCountry: Saudi Arabia
- King Abdulaziz International AirportIdent: OEJNCountry: Saudi Arabia
- King Fahd International AirportIdent: OEDFCountry: Saudi Arabia
- King Hussein International AirportIdent: OJAQCountry: Jordan
- King Khalid International AirportIdent: OERKCountry: Saudi Arabia
- King Mswati III International AirportIdent: FDSKCountry: Eswatini
- King Phalo AirportIdent: FAELCountry: South Africa
- King Shaka International AirportIdent: FALECountry: South Africa
- Kirkuk International AirportIdent: ORKKCountry: Iraq
- Kiruna AirportIdent: ESNQCountry: Sweden
- Kish International AirportIdent: OIBKCountry: Iran
- Kisumu International AirportIdent: HKKICountry: Kenya
- Kitakyushu AirportIdent: RJFRCountry: Japan