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
Whetstone International Airport is staffed by the Canada Border Services Agency (CBSA). CBSA officers at this airport can handle general aviation aircraft only, with no more than 15 passengers. The airport covers an area of at an elevation of above mean sea level. It has one runway designated 7/25 with a turf surface which is or long and wide. For the 12-month period ending April 27, 2016, the airport had 110 aircraft operations: 73% general aviation and 27% military. Whetstone International Airport Whetstone International Airport or Del Bonita/Whetstone International Airport is a public use airport at the Canada–US border, in Port of Del