MIAT Mongolian Airlines is the state-owned flag carrier of Mongolia, headquartered in the MIAT Building in the country's capital of Ulaanbaatar. The airline operates scheduled services from its base at Chinggis Khaan International Airport in Sergelen, near Ulaanbaatar, and is the largest airline in Mongolia by fleet size and destination count. Originally commencing operations in 1956, MIAT exclusively used Soviet aircraft until Mongolia's transition to a market economy in the 1990s, now operating a mix of Boeing and Bombardier jets.