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
Edmonton International Airport an Air Canada Connector air carrier. Also in 1999, Horizon Air began nonstop Fokker F28 Fellowship jet service to Seattle flying on behalf of Alaska Airlines on a code sharing basis. Martinair Holland also operated flights between Edmonton International Airport and Amsterdam Schiphol Airport prior to the termination of this airline's passenger service. Edmonton International Airport offers United States border preclearance facilities. Passengers from domestic flights connecting in Edmonton to a US destination use Quick Connect, which enables passengers to clear security and US Customs and Border Protection without having to claim and recheck baggage during the connection. The four-star