Terminal 1 to 4 were built when the airport was opened in November, 1983. Terminal 5 is the newest terminal opened in 2016, which is now used by Saudia and Flynas for domestic flights.
Now it is under development which will last for five years. Terminal 4 is unused, having never been utilized since construction, and remains without air bridges.It was used to service all Saudia and Flynas domestic flights until Terminal 5 was opened for operation. Terminal 2 is used by all international flights for SkyTeam members, including Saudia, and Flynas.Terminal 1 is used for all international flights (except those operated by Saudia and Middle East Airlines, which are Skyteam members and Flynas).There are five main passenger terminals at the airport, four of them were built when the airport started operation in 1983, and terminal 5 was opened in 2016. Structure and facilities Terminals Passenger terminals This airport was an alternative landing site for NASA's Space Shuttle. Riyadh Air Base, which is much closer to the city center, is operated by the Royal Saudi Air Force. Increased international and local air transport requirements for Riyadh made the change necessary. Until then, what is now Riyadh Air Base served commercial flights to and from Riyadh. King Khalid International Airport (KKIA), designed by architectural practice Hellmuth, Obata & Kassabaum, was opened by HRH King Fahd on 16 November 1983, and opened for scheduled flights on 5 December of the same year.
The Royal Mosque was designed with a signiicant programme of integral art the stained glass, by British architectural artist Brian Clarke, was a landmark work in the history of the medium, considered to be the largest and technically most advanced stained glass project of the modern period. The airport is managed and operated by Riyadh Airports Company. Formerly the largest airport in the world in terms of ground area, the land area allocated for KKIA is the second-largest in the world, after King Fahd International Airport. 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. King Khalid International Airport ( Arabic: مطار الملك خالد الدولي Maṭār al-Malik Khālid al-Duwaliyy, IATA: RUH, ICAO: OERK) is located 35 kilometres (22 mi) 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.