Stapleton International Airport Plaza (Denver's tallest at 714′). Due to Stapleton's location east of downtown, the Federal Aviation Administration imposed a building height restriction of 700'-715' (depending on where the building was). This allowed an unimpeded glide slope for runways (8L/26R) and (8R/26L). The height restriction was lifted in 1995, well after the city's skyscrapers had been erected. By the 1980s, plans were under way to replace Stapleton with a new airport. Stapleton was plagued with a number of problems, including: The Colorado General Assembly brokered a deal in 1985 to annex a plot of land in Adams County into the city of
Stapleton International Airport Denver to El Paso, St. Louis and Tulsa. Frontier operated northbound and southbound from Denver to the other mountain states. Western connected Denver to Minneapolis and Edmonton. The April 1957 OAG shows 38 United, 12 Continental, seven Braniff, seven Frontier, seven Western, five TWA and one Central. The jet age arrived in May 1959 when Continental began operating Boeing 707 jetliners into Stapleton, initially under weight restrictions due to Stapleton's runway capacity. Runway 17/35 and a new terminal building opened in 1964. Although Stapleton officially adopted the "International" name in 1964, its first nonstop international service came in 1968, when