King Khalid International Airport (Arabic: مطار الملك خالد الدولي Maṭār al-Malik Khālid al-Duwaliyy, IATA: RUH, ICAO: OERK) is located 35 kilometres north of Riyadh, Saudi Arabia, designed by the architectural firm HOK, and Arabian Bechtel Company Limited served as the construction manager on behalf of the Saudi government. King Khalid International Airport (KKIA) opened for operations in late 1983. Until then, what is now Riyadh Air Base served commercial flights to and from Riyadh. Increased international and local air transport requirements for Riyadh made the change necessary. Riyadh Air Base, which is much closer to the city center, is operated by the Royal Saudi Air Force.
This airport consists of five passenger terminals (only three of which are in use), with eight aero-bridges each, a mosque, covered and uncovered car parking for 11,600 vehicles, an additional Royal Terminal (for the kingdom's guests, government heads, and Saudi royal family use), a central control tower (one of the world's tallest), and two parallel runways, which are each 4,260 metres (13,980 ft) long. The land area allocated for this airport is among the largest (second-largest, after King Fahd International Airport) in the world.
This airport was an alternative landing site for NASA's Space Shuttle. Riyadh Airports Company is currently managing and operating King Khalid International Airport.