| | IATA | ICAO | City | Region | State | Country | | IBZ | | Ibiza | Ibiza | Baleares Islands | Spain |
| IYK | | Inyokern | | CALIFORNIA | USA |
| JAV | | Ilulissat | | Greenland | Denmark |
| ZIH | | Ixtapa/Zihuatanejo | | Guerrero | Mexico |
| IDA | | Idaho Falls | | IDAHO | USA |
| IND | | Indianapolis | | INDIANA | USA |
| IOM | | Isle of Man | | Isle of Man | Great Britain |
| ISC | | Isles of Scilly | | Isles of Scilly | Great Britain |
| ILF | | Ilford | | Manitoba | Canada |
| IMP | | Imperatriz | | Maranhao | Brazil |
| IMT | | Iron Mountain | | MICHIGAN | USA |
| IWD | | Ironwood | | MICHIGAN | USA |
| INL | | International Falls | | MINNESOTA | USA |
| IGR | | Iguazu | | Misiones | Argentina |
| ISP | | Islip | | NEW YORK | USA |
| ITH | | Ithaca | | NEW YORK | USA |
| YGT | | Igloolik | | Northwest Territories... | Canada |
| YEV | | Inuvik | | Northwest Territories... | Canada |
| YFB | | Iqaluit | | Northwest Territories... | Canada |
| XIB | | Ingersoll | | Ontario | Canada |
|
|