Tân Sơn Nhất International Airport (IATA: SGN, ICAO: VVTS), is Vietnam's largest international airport in terms of area (800 ha/1,977 acres compared with 650 ha/1,606 acres of Noi Bai International Airport and Da Nang International Airport) and in terms of capacity (with the capacity of 15-17 million passengers per year, compared to Noi Bai's capacity of 6 million passengers per year and Da Nang's 2 million passengers per year) and also the country's largest airport in terms of passengers (with an estimated number of over 11 million passengers per year in 2007, more than a half of that of Vietnam's all airports), serves Ho Chi Minh City in particular and Dong Nam Bo in general in southern Vietnam. Its IATA code, SGN, was derived from the city's former name Saigon.
A new international terminal funded by Japanese ODA and constructed by a consortium of four Japanese contractors (KTOM, abbreviation of 4 contractors's names: Kajima - Tasei - Obayashi - Medae), opened in September 2007 with the capacity of 8 to 10 million passengers per year, giving the airport a total capacity of 15-17 million passengers per annum. The old terminal is now used for domestic flights only. After 2015, when Long Thanh International Airport is completed, Tan Son Nhat will serve domestic passengers only.