Stapleton International Airport

Stapleton International Airport (IATA: DEN, ICAO: KDEN, FAALID: DEN) was a major airport in the western United States, and the primary airport of Denver, Colorado. It opened on October 17, 1929, and was replaced by Denver International Airport in February 1995.

It was a hub for Continental Airlines, the original Frontier Airlines, People Express, United Airlines, and Western Airlines. Other airlines with smaller operations at Stapleton included Aspen Airways, today's Frontier Airlines, and Rocky Mountain Airways, all three being based in Denver at the time.

After its demolition, Stapleton International's footprint was redeveloped as a commercial and residential neighborhood called Stapleton, which was renamed Central Park in 2020 to distance itself from Benjamin F. Stapleton, a former member of the Ku Klux Klan.

The Stapleton International Airport codes were transferred to Denver International, which continues to use them today.