Noi Bai International Airport (IATA: HAN, ICAO: VVNB) in HaNoi, the capital of Viet Nam, is the largest airport in Vietnam in terms of total capacity. It is also the largest airport in the country for cargo transport and the second busiest airport for passenger traffic, after Tan Son Nhat airport. It is currently the main airport serving Hanoi. The airport consists of two passenger terminals. Terminal 1 serves domestic flights and the newly built Terminal 2 (inaugurated on 4 January 2015) serves all international flights to and from Hanoi. The airport is currently the main hub of the flag carrier Vietnam Airlines and budget carriers Bamboo Airways, Pacific Airlines and Vietjet Air