Tokyo International Airport located in Tokyo, Japan, is one of the two primary airports serving the Greater Tokyo Area. It is commonly known as Haneda Airport. Although Haneda was originally the primary airport for the Tokyo region, it now shares that role with Narita International Airport. Haneda handles almost all domestic flights to and from Tokyo while Narita handles almost all international flights. In recent years, however, international service from Haneda has expanded significantly with the addition of "scheduled charter" flights to Seoul (S. Korea), Shanghai (PRC) and Hong Kong. The Japanese government plans to expand Haneda's international role in the future with more regional flights and off-peak charter services. Haneda handled 66,735,587 passengers in 2008. By passenger throughput, it was the busiest airport in Asia and the fourth busiest in the world, after Atlanta's Hartsfield-Jackson Airport, Chicago's O'Hare Airport and London-Heathrow. It is the primary base of Japan's two major domestic airlines, Japan Airlines (Terminal 1) and All Nippon Airways (Terminal 2), as well as low-cost carriers Hokkaido International Airlines, Skymark Airlines, Skynet Asia Airways, and StarFlyer. Haneda is expected to be able to handle 90 million passengers after its expansion in 2010.