| I | ||
| Iasi, Romania (IAS) | Indagen, Papua New Guinea (IDN) | Isfahan, Iran (IFN) |
| Ibague, Colombia (IBE) | Indore, India (IDR) | Ishigakij, Japan (ISG) |
| Ibiza, Spain (IBZ) | Innsbruck, Austria (INN) | Islamabad, Pakistan (ISB) |
| Igarka, Russia (IAA) | Inta, Russia (INA) | Island Lake/Garden Hill, Canada (YIV) |
| Iguassu Falls, PR, Brazil (IGU) | Invercargill, New Zealand (IVC) | Islay, United Kingdom (ILY) |
| Iguazu, Argentina (IGR) | Inverell, Australia (IVR) | Isle of Man, United Kingdom (IOM) |
| Ihu, Papua New Guinea (IHU) | Inverness, United Kingdom (INV) | Isles of Scilly, United Kingdom - St Marys (ISC) |
| Ile Des Pins, New Caledonia (ILP) | Ioannina, Greece (IOA) | Isles of Scilly, United Kingdom - Tresco (TSO) |
| Ilheus, Brazil (IOS) | Ioma, Papua New Guinea (IOP) | Istanbul, Turkey (IST) |
| Illaga, Indonesia (ILA) | Ipatinga, Brazil (IPN) | Itaituba, Brazil (ITB) |
| Iloilo, Philippines - Mandurriao (ILO) | Ipiales, Colombia (IPI) | Itokama, Papua New Guinea (ITK) |
| Ilu, Indonesia (IUL) | Ipil, Philippines (IPE) | Ivalo, Finland (IVL) |
| Ilulissat, Greenland (JAV) | Ipoh, Malaysia (IPH) | Ivano-Frankovsk, Ukraine (IFO) |
| Imperatriz, Brazil (IMP) | Ipota, Vanuatu (IPA) | Iwami, Japan (IWJ) |
| Imphal, India (IMF) | Iquique, Chile (IQQ) | Ixtapa, Mexico (ZIH) |
| In Amenas, Algeria (IAM) | Iquitos, Peru (IQT) | Ixtepec, Mexico (IZT) |
| Inagua, Bahamas (IGA) | Irkutsk, Russia (IKT) | Izmir, Turkey (ADB) |
| Inanwatan, Indonesia (INX) | Isafjordur, Iceland (IFJ) | Izumo, Japan (IZO) |