Distance from CBD and Age of the World's 30 Largest Airports
The older an airport, the more likely it is to be located near the
center of the metropolitan area it serves. Many older, close-in airports
have been replaced by suburban facilities. An extreme example is the
replacement of Stapleton Airport, just 8 kilometers from downtown Denver,
by the new Denver International, located 37 kilometers from downtown.
The worst case is Narita Airport, which services Tokyo, but is 66 kilometers
away. There were simply no other suitable sites closer.