Hanoi Noi Bai International Airport is a civil-military airport situated about 27 kilometers northeast of the capital of Vietnam, Hanoi. It operates by Northern Vietnam Airports Authority and is affiliated to Vietnam Airports Corporation, providing aviation services to Hanoi. It is the largest airport in northern Vietnam and the second-largest in Vietnam after Tan Son Nhat International. It also served as the main airport for Hanoi, replacing the role of Gia Lam Airport.