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Chinggis Khaan International Airport, also referred to as New Ulaanbaatar International Airport (IATA: UBN, ICAO: ZMCK), is an international airport located in the Khöshig Valley of Sergelen, Töv, Mongolia, 52 km south of the capital Ulaanbaatar and 20 km southwest of Zuunmod. It started its operations on 4 July 2021 and serves as the primary airport for Ulaanbaatar and its metropolitan area, functioning as a replacement for Buyant-Ukhaa International Airport. Named after Genghis Khan (1162–1227), it is the largest air facility in the country, serving as a hub for all major Mongolian airlines.