Haixi Huatugou Airport (IATA: HTT, ICAO: ZLHX) is an airport in Mangnai, a county-level city of Haixi Mongol and Tibetan Autonomous Prefecture in Qinghai Province, China. The airport is located near the town of Huatugou, at an altitude of 2,945 metres (9,662 ft) above sea level. Construction began on 30 December 2011 with an estimated total investment of 700 million yuan. The airport was opened on 26 June 2015.