| Abbreviation | Definition |
|---|---|
| IKI | Iki, Japan |
| IKIA | Imam Khomeini International Airport (Tehran) |
| IKK | Kankakee, Illinois USA |
| IKL | Ikela, Zaire |
| IKO | Nikolski, Alaska USA |
| IKP | Inkerman, Queensland, Australia |
| IKS | Tiksi, Russia |
| IKT | Irkutsk, Russia |
| IKW | Jack Barstow Airport, Midland, Michigan USA (formerly 3BS) |
| ILA | Illaga, Indonesia |
| ILE | Killeen Municipal Airport, Killeen, Texas USA |
| ILF | Ilford, Manitoba, Canada |
| ILG | Greater Wilmington Airport, Philadelphia, Pennsylvania/ Wilmington, Delaware USA |
| ILI | Iliamna, Alaska USA |
| ILK | Ilaka, Madagascar |
| ILM | Wilmington, North Carolina USA |
| ILN | Wilmington, Ohio USA |
| ILO | Iloilo, Philippines |
| ILP | Ile Des Pins, New Caledonia |
| ILQ | Ilo Peru |