| Abbreviation | Definition |
|---|---|
| IDG | Ida Grove, Iowa USA |
| IDI | Indiana, Pennsylvania USA |
| IDK | Indulkana, South Australia, Australia |
| IDL | Indianola Municipal Airport, Indianola, Mississippi USA |
| IDN | Indagen, Papua New Guinea |
| IDO | Santa Isabel Do Morro, TO, Brazil |
| IDR | Indore, India |
| IDY | Ile d'Yeu, France |
| IEG | Zielona Gora, Poland |
| IEJ | Iejima, Japan |
| IEV | Kiev, Ukraine |
| IFF | Iffley, Queensland, Australia |
| IFJ | Isafjoudur, Iceland |
| IFN | Isfahan, Iran |
| IFO | Ivano Frankovsk, Ukraine |
| IFP | Bullhead City, Arizona USA |
| IGA | Inagua, Bahamas |
| IGE | Iguela, Gabon |
| IGG | Igiugig, Alaska USA |
| IGH | Ingham, Queensland, Australia |