Originally Posted by
742Dash
NRT is still technically unfinished (it is supposed to have 5 runways), and it is the reason that KIX and NGO were built on reclaimed land. The construction of NRT was extremely controversial, and there are still private homes on the airport whose owners refuse to sell.
True, they should just expand Haneda. Closer to the city and plenty of bay to expand into. That's what Hong Kong is doing, doubling the size of the airport north of HKG in the waters.