| IAD | Washington - Dulles International Airport |
| IAG | Niagara Falls International Airport |
| IAH | Houston - Bush Intercontinental Airport |
| IBZ | Ibiza Airport |
| ICN | Seoul - Incheon International Airport |
| ICT | Wichita Mid-Continent Airport |
| IDY | Ile d´Yeu Airport - Grand Phare |
| IEV | Kiev - Zulhany Airport |
| IGR | Iguazu International Airport |
| IGU | Foz do Iguaçu - Cataratas Int´l Airport |
| IKT | Irkutsk Airport |
| ILM | Wilmington Int´l Airport |
| ILY | Islay Airport |
| IND | Indianapolis - Grissom Aeroplex |
| IND | Indianapolis International Airport |
| INN | Innsbruck Airport |
| INT | Winston-Salem Airport |
| INU | Nauru International Airport |
| INV | Inverness-Dalcross Airport |
| IOA | Ioannina National Airport |
| IOM | Isle of Man Airport |
| IPH | Ipoh - Sultan Azlan Shah Airport |
| IPT | Williamsport Regional Airport |
| IQQ | Iquique Airport - Diego Aracena |
| IQT | Iquitos Airport |
| IRJ | La Rioja Airport |
| ISA | Mount Isa Airport |
| ISB | Islamabad Airport |
| ISC | Isles of Scilly-St Mary´s Airport |
| ISO | Kinston - North Carolina Global Transpark |
| ISP | Long Island - MacArthur Airport |
| IST | Istanbul - Atatürk Airport |
| ITH | Ithaca - Tompkins County Airport |
| ITM | Osaka - Itami International Airport |
| ITO | Hilo International Airport |
| IVL | Ivalo Int´l Airport |
| IWA | Williams Gateway Airport |
| IYK | Inyokern - Kern County Airport |
