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

| Company | Type | Location | Codes |
|---|---|---|---|
| Isedor Iverson Airport | aerodrome | United States | — |
| Isfahan Shahid Beheshti International Airport | military airfield | Iran | IATA IFN · ICAO OIFM |
| Ishango | aerodrome | Congo - Kinshasa | — |
| Ishasha River Camp Airport | aerodrome | Uganda | ICAO FZNI |
| Ishigaki Airport | international | Japan | IATA ISG · ICAO ROIG |
| Ishim Airfield | aerodrome | Russia | — |
| Ishona Langa Victor Hugo Airstrip | aerodrome | South Africa | — |
| Ishwardi Airport | international | Bangladesh | IATA IRD · ICAO VGIS |
| Isiolo Airport | aerodrome | Kenya | ICAO HKIS |
| Isiro Matari | international | Congo - Kinshasa | IATA IRP · ICAO FZJH |
| Isis Downs Airport | aerodrome | Australia | — |
| Isisford Airport |
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
Operators claiming an entry can correct facts, add services and certificates, and mark their page verified. Claiming is free — see a company’s page for the claim link.
| international |
| Australia |
| IATA ISI |
| Isithebe Airport | aerodrome | South Africa | ICAO FAIS |
| Iskandar Airport | international | Indonesia | IATA PKN · ICAO WAGI |
| Iskrivka | aerodrome | Ukraine | — |
| Iskut Village Airport | aerodrome | Canada | — |
| Isla Cristina Agricultural Airstrip | aerodrome | Spain | — |
| Isla de Cedros Airport | regional | Mexico | ICAO MMCD |
| Isla Guadalupe | aerodrome | Mexico | ICAO MMGD |
| Islamabad International Airport | international | Fateh Jang, Pakistan | IATA ISB · ICAO OPIS |
| Isla Mujeres Airport | international | Mexico | IATA ISJ · ICAO MMIM |
| Isla Natividad Airstrip | aerodrome | Mexico | — |
| Island Airport | aerodrome | United States | — |
| Island Air Service Seaplane Base | aerodrome | United States | — |
| Island Bend Airstrip | aerodrome | Australia | — |
| Island Lake Airport | international | Canada | IATA YIV · ICAO CYIV |
| Island Lake Seaplane Base | aerodrome | United States | — |
| Island View Airport | aerodrome | United States | — |
| Isla San Felix Airport | military airfield | Chile | ICAO SCFX |
| Isla San Marcos Airstrip | aerodrome | Mexico | — |
| Islay Airport | international | United Kingdom | IATA ILY · ICAO EGPI |
| Isle Airport | aerodrome | United States | — |
| Isle-A-Port Airport | aerodrome | United States | — |
| Isle of Man Airport | international | Isle of Man | IATA IOM · ICAO EGNS |
| Isle Royale Seaplane Base | aerodrome | Hubbell, United States | — |
| Islesboro Airport | aerodrome | Islesboro, United States | — |
| Isley Airport | aerodrome | United States | — |
| Isley Field | aerodrome | Cedar Falls, United States | — |
| Islita Airport | international | Bejuco, Costa Rica | IATA PBP · ICAO MRIA |
| Ismail Mire Airport | aerodrome | Somalia | — |
| Isongo Airport | aerodrome | Congo - Kinshasa | — |
| Israel's Farm Airport | aerodrome | United States | — |
| Issoudun - Le Fay Aerodrome | aerodrome | France | ICAO LFEK |
| Istabl Antar Station | military airfield | Saudi Arabia | — |
| Istomino Airfield | aerodrome | Russia | — |
| Istra Bunkovo Heliport | heliport | Russia | — |
| Istres-Le Tubé Air Base | military airfield | France | ICAO LFMI |
| ITACIMPASA | aerodrome | Itaituba, Brazil | — |
| Itacoatiara Airport | international | Brazil | IATA ITA · ICAO SBIC |
| Itagro Agricultural Aviation | aerodrome | Alegrete, Brazil | ICAO SJWG |