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
Denver International Airport in and out of the new airport, and to wander around on foot looking at the ground-side facilities—including the baggage system, which was still under testing. FAA controllers also took advantage of the event to test procedures, and to check for holes in radio coverage as planes taxied around and among the buildings. DIA finally replaced Stapleton on February 28, 1995, 16 months behind schedule and at a cost of $4.8 billion, nearly $2 billion over budget. The construction employed 11,000 workers. United Airlines Flight 1062 to Kansas City International Airport was the first to depart and United Flight 1474