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Stapleton International Airport (IATA: DEN, ICAO: KDEN, FAA LID: DEN) was a major airport in the western United States, and the primary airport of Denver, Colorado, from 1929 to 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, Frontier Airlines, and Rocky Mountain Airways, all three being based in Denver at the time.Stapleton International Airport was replaced by Denver International Airport in 1995; it was closed and the property redeveloped as the commercial and residential neighborhood of Central Park, which was named Stapleton until 2020. The former Stapleton International Airport codes were transferred to the new airport, which continues to use them today.