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

| Company | Type | Location | Codes |
|---|---|---|---|
| Iranshahr Airport | international | Iran | IATA IHR · ICAO OIZI |
| Ira's Airstrip | aerodrome | United States | — |
| Iratoi | aerodrome | Indonesia | — |
| Irbo | aerodrome | Colombia | — |
| Irbo Southwest | aerodrome | Colombia | — |
| Ireland West Airport Knock | international | Ireland | IATA NOC · ICAO EIKN |
| Irho Airport | aerodrome | Colombia | — |
| Iriba Airport | aerodrome | Chad | — |
| Iringa Airport | international | Tanzania | IATA IRI · ICAO HTIR |
| Iriri | aerodrome | Brazil | — |
| Irish Creek Airfield | aerodrome | United States | — |
| Irish Hills Farms Airport | aerodrome | United States | — |
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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| Irish Hills Landing Field | aerodrome | United States | — |
| Irkutsk Airport | international | Russia | IATA IKT · ICAO UIII |
| Irkutsk Northwest Airport | aerodrome | Russia | ICAO UIIR |
| Irlbeck Airport | aerodrome | United States | — |
| Irma Airport | aerodrome | Canada | ICAO CFU8 |
| Irmãos Ribeiro | aerodrome | Brazil | — |
| Irobi Airport | aerodrome | Bolivia | ICAO SLIR |
| Irogo Airport | aerodrome | Congo - Brazzaville | — |
| Iron Bridge | international | Australia | IATA IBM · ICAO YIBO |
| Iron County Airport | aerodrome | United States | — |
| Iron Crown Airport | private airstrip | United States | — |
| Ironhead Airport | aerodrome | United States | — |
| Iron Knob Aerodrome | aerodrome | Australia | — |
| Iron Mountain Pumping Plant Airport | aerodrome | United States | — |
| Iron Mountain Ranch Airport | aerodrome | United States | — |
| Irons Airport | aerodrome | United States | — |
| Irons Point Seaplane Base | aerodrome | United States | — |
| Iropena Airstrip | aerodrome | Papua New Guinea | ICAO AYIP |
| Iroquois Airport | aerodrome | Canada | — |
| Iroquois Falls Airport | aerodrome | Canada | — |
| Iroquois Landing Seaplane Base | aerodrome | Dummer, United States | — |
| Irshava Airstrip | aerodrome | Ukraine | — |
| Iruma Air Base | aerodrome | Japan | ICAO RJTJ |
| Irumu | aerodrome | Congo - Kinshasa | — |
| Irvington Marina Seaplane Base | aerodrome | United States | — |
| Irwin Farms Airport | private airstrip | United States | — |
| Irwin Road Emergency Glider Strip | aerodrome | New Zealand | — |
| Irządze Airstrip | aerodrome | Poland | — |
| Isaacson Airport | aerodrome | United States | — |
| Isabel Municipal Airport | aerodrome | United States | — |
| Isabis Airstrip | aerodrome | Namibia | — |
| Isachsen Airport (abandoned) | aerodrome | Canada | ICAO CYIC |
| Ísafjörður Airport | international | Iceland | IATA IFJ · ICAO BIIS |
| Isalo Relais de la Reine | international | Madagascar | IATA RLR |
| Isan Airstrip | aerodrome | Papua New Guinea | ICAO AYIS |
| Isbell Field | aerodrome | United States | — |
| Isbell Ranch Airport | aerodrome | United States | — |
| Iscozacín Airport | aerodrome | Peru | ICAO SPEN |