- Indian Creek Ranch AirportIdent: 56GServes: Deckerville
- Indian Creek US Forest Service AirportIdent: S81Serves: Indian Creek
- Indian Hammock AirportIdent: FL75Serves: Fort Drum
- Indian Hill Farm AirportIdent: TN50Serves: New Hope
- Indian Hills AirparkIdent: 2AZ1Serves: Salome
- Indian Lake AirportIdent: 5G2Serves: Central City
- Indian River AerodromeIdent: FL74Serves: Vero Beach
- Indian Springs AirportIdent: 3TN0Serves: Kingsport
- Indian Springs AirportIdent: 88PSServes: Landisville
- Indian Springs Ranch AirportIdent: 7XS7Serves: Fredericksburg
- Indiana County–Jimmy Stewart AirportIdent: KIDIServes: Indiana
- Indianapolis Executive AirportIdent: KTYQServes: Indianapolis
- Indianapolis Metropolitan AirportIdent: KUMPServes: Indianapolis
- Indianapolis Regional AirportIdent: KMQJServes: Indianapolis
- Indianola Municipal AirportIdent: KIDLServes: Indianola
- Indiantown AirportIdent: KX58Serves: Indiantown
- Indio-Faith AirportIdent: 2XS2Serves: Carrizo Springs
- Inductotherm AirportIdent: 3NJ6Serves: Rancocas
- Industrial AirparkIdent: NM83Serves: Hobbs
- Industrial Helicopters Inc. AirportIdent: 10LAServes: Scott
- Industry Air ParkIdent: 38OHServes: Baltimore
- Indy South Greenwood AirportIdent: KHFYServes: Indianapolis
- Infinity Landing AirportIdent: US-8376Serves: Piedmont
- Ingalls FieldIdent: FL12Serves: Miccosukee
- Ingalls FieldIdent: KHSPServes: Hot Springs
- Ingalls Municipal AirportIdent: K30KServes: Ingalls
- Ingebretson Airspray AirportIdent: 7NA4Serves: Mayville
- Ingels AerodromeIdent: 4KS2Serves: De Soto
- Ingersoll AirportIdent: KCTKServes: Canton
- Ingle AirportIdent: SD43Serves: Cavour
- Ingleside AirportIdent: MN66Serves: Loretto
- Ingleside Regional AirportIdent: KTFPServes: Aransas Pass
- Ingram Private AirportIdent: MU41Serves: Purdy
- Inigok AirportIdent: 4AK1Serves: Deadhorse
- Inshallah International AirportIdent: 7OR8Serves: Seneca
- Inter County AirportIdent: 31DServes: Irwin
- Inter-State AirportIdent: MO29Serves: Pleasant Hill
- International Peace Garden AirportIdent: S28Serves: Dunseith
- Intervale AirportIdent: NH86Serves: Henniker
- Inverness AirportIdent: KINFServes: Inverness
- Inyokern AirportIdent: KIYKServes: Inyokern
- Ione Municipal AirportIdent: KS23Serves: Ione
- Ionia County AirportIdent: KY70Serves: Ionia
- Iowa City Municipal AirportIdent: KIOWServes: Iowa City
- Iowa County AirportIdent: KMRJServes: Mineral Point
- Iowa Falls Municipal AirportIdent: KIFAServes: Iowa Falls
- Ipy Ranch AirportIdent: WY14Serves: Hulett
- Irion AirportIdent: II94Serves: Noblesville
- Irish Hills Farms AirportIdent: 33CTServes: Bethlehem
- Iron County AirportIdent: K50DServes: Crystal Falls
- Iron Crown AirportIdent: 22ORServes: Silverton
- Iron Mountain Pumping Plant AirportIdent: 72CLServes: Desert Center
- Ironhead AirportIdent: T58Serves: Sanger
- Irons AirportIdent: 5MO1Serves: Moberly
- Isaacson AirportIdent: 8AN6Serves: Medical Lake
- Isaacson AirportIdent: US-7570Serves: Belleville
- Isabel Municipal AirportIdent: 3Y7Serves: Isabel
- Isbell FieldIdent: K4A9Serves: Fort Payne
- Isbell Ranch AirportIdent: 14XSServes: Davilla
- Isedor Iverson AirportIdent: KHZXServes: Mc Gregor