Map - Haneda Airport (Tokyo International Airport)

Haneda Airport (羽田空港), officially Tokyo International Airport (東京国際空港), and sometimes called as Tokyo Haneda Airport or Haneda International Airport, is one of two international airports serving the Greater Tokyo Area, the other one being Narita International Airport (NRT). It serves as the primary base of Japan's two major domestic airlines, Japan Airlines (Terminal 1) and All Nippon Airways (Terminal 2), as well as Air Do, Skymark Airlines, Solaseed Air, and StarFlyer. It is located in Ōta, Tokyo, 15 km south of Tokyo Station.

Haneda was the primary international airport serving Tokyo until 1978; from 1978 to 2010, Haneda handled almost all domestic flights to and from Tokyo as well as "scheduled charter" flights to a small number of major cities in East and Southeast Asia, while Narita International Airport handled the vast majority of international flights from further locations. In 2010, a dedicated international terminal, currently Terminal 3, was opened at Haneda in conjunction with the completion of a fourth runway, allowing long-haul flights during night-time hours. Haneda opened up to long-haul service during the daytime in March 2014, with carriers offering nonstop service to 25 cities in 17 countries.

The Japanese government constantly encourages the use of Haneda for premium business routes and the use of Narita for leisure routes and by low-cost carriers. However, the major full-service carriers may have a choice to fly to both airports. Haneda handled 87,098,683 passengers in 2018; by passenger throughput, it was the third-busiest airport in Asia and the fourth-busiest in the world, after Hartsfield–Jackson Atlanta International Airport, Beijing Capital International Airport (Asia's busiest), and Dubai International Airport. It is able to handle 90 million passengers per year following its expansion in 2018. With Haneda and Narita combined, Tokyo has the third-busiest city airport system in the world, after London and New York.

In 2020, Haneda was named the second best airport after Singapore's Changi Airport and the World's Best Domestic Airport, As of 2021, Haneda was rated by Skytrax as the second Best Airport in-between Qatar's Hamad International Airport and Singapore's Changi Airport, and maintaining its best Domestic Airport title from the previous year.

Before the construction of Haneda Airport, Tachikawa Airfield was Tokyo's primary airport. It was the main operating base of Japan Air Transport, then the country's flag carrier. But as it was a military base and 35 km away from central Tokyo, aviators in Tokyo used various beaches of Tokyo Bay as airstrips, including beaches near the current site of Haneda (Haneda was a town located on Tokyo Bay, which merged into the Tokyo ward of Kamata in 1932). In 1930, the Japanese postal ministry purchased a 53 ha portion of reclaimed land from a private individual in order to construct an airport.