Haneda airport which is also called the Tokyo International Airport or Haneda International happens to be one of the two main airports that serve the Tokyo area and it is the main base for two major Japanese airlines All Nippon Airways and Japan Airlines as well as home to StarFlyer, Solaseed Air, Skymark Airlines, and Air Do. Haneda airport is located in Ota, Tokyo which is almost 8 miles from the Tokyo Station.
Haneda airport was the main international airport that served Tokyo until around the late 1970s. During the early 1980s until around 2010, Haneda Airport was handling most of the domestic flights from and to Tokyo as well as providing scheduled charter flights to some major cities located within East Asia while Narita International was handling most international flights. Then during 2010, Haneda had an international terminal opened with the completion of a new runway that allowed night time long haul flights to be done. Then during 2014, Haneda opened up Long haul daytime service that had carriers offering nonstop flights to over 25 cities within 17 different countries. Now, Japanese government officials are now using Haneda for business routes at premium prices and using Narita for low cost carriers and leisure flights.
In just 2016, Haneda airport handled over 75,000,000 passengers which made it the third busiest airport within Asia and the 5 busiest in the whole world. Because of the expansion made in 2010, Haneda is able to handle well over 90 million passengers every year. When you combine Narita and Haneda, Tokyo ends up being the third busiest airport city system in the whole world, right after London and New York City.
It was before the construction of Haneda that many aviators would use various beaches in Tokyo Bay as an airstrip, which actually included some of the beaches that are located near Haneda. Haneda was actually a town that was located right on Tokyo Bay and eventually it merged into become the Tokyo ward of Kamata during 1932. Then in 1930, the Japanese postal ministry had purchased 120-acre part of the waterfront from a private individual in order to create an airport.
Now because of the winning bid by Tokyo for the 2020 Summer Olympics, there is a plan by the Japanese government to begin increasing the slot capacity of both Narita and Haneda together, and then construct new railway lines that will link Haneda to the Tokyo Station which will only take about 20 minutes.
JR East has been considering extending their existing freight line that goes from the Tamachi Station which is located on the Yamanote Line in order to create a third rail link to Haneda, which may be connected to Ueno-Tokyo Line which would offer a connection to Ueno and points on the Takasaki Line and Utsunomiya Line. Although there is discussion, this extension was shelved.
Because of the Narita International and Yokota Air Base, Haneda does have airspace restrictions. Because of the requirements of the airfields and noise concerns, Haneda flights will often depart and arrive using a circular route over Tokyo Bay.
For more information about Haneda Airport, check out: http://www.tokyo-airport-bldg.co.jp/en/.