Airports
Denver International Airport (IATA: DEN, ICAO: KDEN), commonly known as DIA, serves as the primary airport for the Denver-Aurora Metropolitan area. It is the tenth busiest airport in the world and ranks fifth in the United States, with 47,324,844 passengers passing through it in 2006. It covers more than 53 square miles (137 km²), making it the largest airport in the United States by land area. Denver serves as a major hub for United Airlines and the headquarters for Frontier Airlines. In the past, Denver has been home to other airports that are no longer operational. Stapleton International Airport was closed in 1995 when it was replaced by DIA. Lowry Air Force Base was a military flight training facility that ceased flight operations in 1966, with the base finally being closed in 1994. It is currently being used for residential purposes. Rocky Mountain Metropolitan Airport (KBJC) and Centennial Airport (KAPA) are north and south, respectively, of downtown Denver. Both airports are moderately busy, but only serve general aviation aircraft.
(Source: Wikipedia.org)
