Hanoi is served by Noi Bai International Airport, located in the Soc Son District, approximately 40 km (25 mi) north of Hanoi. Noi Bai is the only international airport for the northern regions of Vietnam.
Hanoi will have additionally another international airport, which will cost $8 billion, being the highest foreign investment so far in the history of Vietnam. The construction will be carried out in three stages,the first phase will start in 2011 until 2015.
There are two main highways linking the airport and city. The route to the city via Thăng Long Bridge is more direct than Highway 1, which runs along the outskirts of the city. The main highways are shared by cars, motor scooters, with separate lanes by the side for bicycles. Taxis are plentiful and usually have trip meters, although it is also common to agree on the trip price before taking a taxi from airport to the city centre. Tourists also sometimes tour the city on cyclos especially in the Old Quarter.
Hanoi is also the origin departure point for many Vietnam Railways train routes in the country. The Reunification Express (tàu Thống Nhất) runs from Hanoi to Ho Chi Minh City from Hanoi station (formerly Hang Co station), with stops at cities and provinces along the line. Trains also depart Hanoi frequently for Hai Phong and other northern cities.
The main means of transport within the city are motorbikes, buses, taxis, and bicycles. Motorbikes remain the most common way to move around the city. Public buses run on many routes and fare can be purchased on the bus. For short trips, "xe ôm" (literally, "hug vehicle") motorcycle taxis are available where the passenger sits at the rear of a motorbike.