Stapleton International Airport Stapleton International Airport Stapleton International Airport was the primary airport serving Denver, Colorado, United States from 1929 to 1995. At different times it served as a hub for Continental Airlines, the original Frontier Airlines, People Express, Trans World Airlines (TWA), United Airlines and Western Airlines. Other airlines with smaller hub operations at Stapleton included Aspen Airways, the current version of Frontier Airlines and Rocky Mountain Airways, with all three of these air carriers being based in Denver at the time. In 1995, Stapleton was replaced by Denver International Airport. It has since been decommissioned and the property redeveloped as a
Orlando International Airport one of the largest commercial airports in the US. In addition, the airport is home to a maintenance base for United Airlines. The airport code MCO stands for the airport's former name, McCoy Air Force Base, a Strategic Air Command (SAC) installation, that was closed in 1975 as part of a general military drawdown following the end of the Vietnam War. In terms of commercial airline service, the Greater Orlando area is also served by Orlando Sanford International Airport (SFB), and more indirectly by Daytona Beach International Airport (DAB), Orlando Melbourne International Airport (MLB), Tampa International Airport (TPA), and St.