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
Coutts/Ross International Airport level. It has one runway designated 7/25 with a turf surface measuring . For the 12-month period ending August 23, 2008, the airport had 25 general aviation aircraft operations, an average of 2 per month. Coutts/Ross International Airport Coutts/Ross International Airport is located west of Coutts, Alberta, Canada and west of Sweet Grass, Montana, United States. Ross International Airport is owned by the U.S. state of Montana and is operated by the Montana Aeronautics Division. Its runway is located on the Canada–US border. The airport is classified as an airport of entry by Nav Canada and is staffed by the