Islamabad International Airport (Urdu: اسلام آباد بین الاقوامی ہوائی اڈا) (IATA: ISB, ICAO: OPIS) (also known as Gandhara International Airport) is an international airport serving Islamabad, the capital city of Pakistan and Rawalpindi. It is located 25 km (16 mi) south-west of the city, and is accessed via Srinagar Highway.

The airport commenced full operations in 6 May 2018, replacing the defunct Benazir Bhutto International Airport which now forms part of the PAF Base Nur Khan. It is the largest cargo airport in Pakistan and also in terms of area and passenger capacity, capable of serving 9 million passengers yearly. Further expansions in the future will allow it to serve up to 25 million passengers yearly. It is the second-busiest airport in Pakistan in terms of passenger traffic after Jinnah International Airport, Karachi. The terminal includes 15 gates with ten remote gates, duty-free shops, a food court and 42 immigration counters. Pakistan Civil Aviation Authority is acquiring 2,833 acres (11.46 km2 / 4.42 sq mi) of land to build a third runway. It is the first and only airport in Pakistan capable of handling the Airbus A380.