IAD

Washington Dulles

IAH

Houston Intercontinental 

IBZ

Ibiza

IEV

Kiev

IFN

Isfahan

IGU

Iguassa Falls

IND

Indianapolis

INN

Innsbruck

INV

Inverness

IOM

Isle of Man

ISA

Mount Isa

ISB

Islamabad-Pakistan

IST

Istanbul

IVL

Ivalo

IZM

Izmir