International airports, regional fields and GA aerodromes — the places every mission starts and ends.

| Company | Type | Location | Codes |
|---|---|---|---|
| Kastoria National Airport "Artistotelis" | international | Greece | IATA KSO · ICAO LGKA |
| Kastrikum Airport | military airfield | Kastrikum, Russia | — |
| Kasulu Airstrip | aerodrome | Tanzania | ICAO HTKU |
| Kasumigaura Airport | military airfield | Japan | — |
| Kasuminome Airfield | military airfield | 仙台市, Japan | ICAO RJSU |
| Kasungu Airport | international | Malawi | IATA KBQ · ICAO FWKG |
| Katako'kombe Airport | aerodrome | Congo - Kinshasa | ICAO FZVG |
| Katale Airport | aerodrome | Congo - Kinshasa | ICAO FZNB |
| Katama Airpark | aerodrome | United States | — |
| Katanning Airport | international | Australia | IATA KNI · ICAO YKNG |
| Kataza Airfield | aerodrome | South Africa | — |
aerodrome 30,878international 8,351military airfield 1,867private airstrip 1,800heliport 555regional 460
United States 15,232Brazil 2,982Australia 2,025Canada 1,765France 1,355Russia 1,265United Kingdom 1,109South Africa 938Germany 879Colombia 835Italy 718Indonesia 681Argentina 621Ukraine 570Papua New Guinea 536China 489Mexico 478Venezuela 468Spain 414India 411Namibia 376Chile 358Congo - Kinshasa 356South Sudan 331Poland 327Czechia 277New Zealand 250Kenya 242Sweden 222Japan 195Philippines 188Norway 179Botswana 151Portugal
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| aerodrome |
| Congo - Kinshasa |
| — |
| Katete Airstrip | aerodrome | Zambia | — |
| Kathamel Airport | aerodrome | United States | — |
| Katherine Gorge Airport | aerodrome | Australia | ICAO YKHG |
| Katherine Heliport | aerodrome | Australia | — |
| Katheryns Landing Airport | aerodrome | United States | — |
| Katilu Airstrip | aerodrome | Kenya | — |
| Katima Mulilo Airport | international | Namibia | IATA MPA · ICAO FYKM |
| Katiola Airport | international | Côte d'Ivoire | IATA KTC |
| Katiti's Place Airport | aerodrome | Namibia | ICAO FYKF |
| Katiu Airport | international | France | IATA KXU |
| Katjutari Airport | aerodrome | Australia | — |
| Katmai Air Seaplane Base | aerodrome | United States | — |
| Katmai Lodge Airport | private airstrip | United States | — |
| Kato Airport | international | Kato, Guyana | IATA KTO · ICAO SYKT |
| Katoomba Airfield | aerodrome | Australia | ICAO YKAT |
| Katovice Airstrip | aerodrome | Czechia | — |
| Katowice-Muchowiec Airfield | aerodrome | Poland | ICAO EPKM |
| Katowice Wojciech Korfanty Airport | international | Poland | IATA KTW · ICAO EPKT |
| Katrineholm Airfield | aerodrome | Sweden | ICAO ESVK |
| Katse Airport | aerodrome | Lesotho | ICAO FXKA |
| Katsika Air Base (disused) | military airfield | Greece | — |
| Katsina Airport | international | Nigeria | IATA DKA · ICAO DNKT |
| Katsuura Sky Harbor | aerodrome | Japan | — |
| Kattiniq/Donaldson Airport | international | Canada | IATA YAU · ICAO CTP9 |
| Kattleberg Airfield | aerodrome | Sweden | — |
| Katubwe Airport | aerodrome | Congo - Kinshasa | — |
| Katukurunda Airport | military airfield | Sri Lanka | IATA KTY · ICAO VCCN |
| Katumbi Airport - CLOSED | aerodrome | Malawi | ICAO FWKB |
| Katwe Airport | aerodrome | Congo - Kinshasa | ICAO FZQH |
| Kauda | aerodrome | Sudan | — |
| Kauehi Airport | international | France | IATA KHZ · ICAO NTKA |
| Kauer Airport | aerodrome | United States | — |
| Kaufana Airport | international | Tonga | IATA EUA · ICAO NFTE |
| Kaufield Airport | aerodrome | United States | — |
| Kauhajoki Airfield | international | Finland | IATA KHJ · ICAO EFKJ |
| Kauhava Airfield | international | Finland | IATA KAU · ICAO EFKA |
| Kaukerus Airstrip | aerodrome | Namibia | ICAO FYKL |
| Kaukira Airport | international | Puerto Lempira, Honduras | IATA CDD · ICAO MHCU |