Stapleton International Airport

Last updated
Stapleton International Airport
The location of Stapleton Airport on a map
of Denver neighborhoods
Airport typeDefunct
Owner/OperatorCity of Denver
Serves Denver
Location Central Park, Denver, Colorado
OpenedOctober 17, 1929 (1929-10-17)
ClosedFebruary 27, 1995 (1995-02-27) [1]
Hub for
Elevation  AMSL 5,333 ft / 1,625 m
Coordinates 39°45′40″N104°53′31″W / 39.761°N 104.892°W / 39.761; -104.892
Usa edcp relief location map.png
Airplane silhouette.svg
USA Colorado relief location map.svg
Airplane silhouette.svg
Direction LengthSurface
17R/35L3,50511,500 Concrete
18/362,3627,750 Asphalt

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, today’s Frontier Airlines, and Rocky Mountain Airways, all three being based in Denver at the time. [2]

Stapleton International Airport was replaced by Denver International Airport in 1995; [1] 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.


Looking west, January 1966. Only concourses A, B, and C existed then. A United Airlines Pilot Training Center was later built on the vacant land between the airport's west boundary and the housing tracts. Jan1966-StapletonAirportDenver.jpg
Looking west, January 1966. Only concourses A, B, and C existed then. A United Airlines Pilot Training Center was later built on the vacant land between the airport's west boundary and the housing tracts.
Looking north, January 1966. Runway 35 became 35L, after 35R was built. The old United Airlines pilot training center buildings, on the airport proper, were still in operation. A UAL DC-8 pilot training flight has just made a missed approach, complete with its shadow. Jan1966-StapletonAirport-SouthToNorthView.jpg
Looking north, January 1966. Runway 35 became 35L, after 35R was built. The old United Airlines pilot training center buildings, on the airport proper, were still in operation. A UAL DC-8 pilot training flight has just made a missed approach, complete with its shadow.

Prewar and wartime years (1929–1945)

Stapleton opened in 1929 as Denver Municipal Airport on October 17. The development of the airport was spearheaded by Denver mayor Benjamin F. Stapleton and Improvements and Parks Department manager Charles Vail. [3] Prior to the new airport's opening, Denver had been served by a number of smaller facilities, including an airstrip along Smith Road in Aurora (first used in 1911), an airfield at 26th Avenue and Oneida Street, Lowry Field near 38th Avenue and Dahlia Street, and Denver Union Airport at 46th Avenue east of Colorado Boulevard. [4]

In the late 1930s the facilities consisted of two hangars and a small administration building mainly used for air mail processing. [3] [5] United Airlines and Continental Airlines began service in 1937. [3] The March 1939 Official Aviation Guide (OAG) shows nine weekday departures: seven United and two Continental.[ citation needed ]

Continental moved its headquarters from El Paso, Texas to Denver in October 1937, [6] as airline president Robert F. Six believed that the airline should have its headquarters in a large city with a potential base of customers. [7] Continental moved its headquarters to Los Angeles in July 1963. [8]

The airfield was renamed Stapleton Airfield on 25 August 1944, in honor of Mayor Stapleton, who had served from 1923-1931 and from 1935 until 1947. [3]

Postwar years (1945–1978)

Stapleton's modern horseshoe-shaped terminal design was announced in 1946, and was shelved in 1947 by incoming mayor James Newton. The original administration building was extended with new wings in the early 1950s, and replaced entirely in 1954. [3]

DC-4 nonstop flights to Chicago, San Francisco and Los Angeles began in 1946; DC-6 nonstops to Washington DC began in 1951 and to New York in 1952. [9] Denver then had five airlines: United flew across the country, Continental flew south and east, Braniff flew to Texas, [10] Frontier flew to smaller cities north and south from Denver, [11] and Western connected Denver to Minneapolis and to Edmonton in Canada. [12] TWA and Central arrived in 1956.

The April 1957 OAG shows 38 daily United departures, 12 for Continental, seven Braniff, seven Frontier, seven Western, five TWA and one Central. The jet age arrived in May 1959 when Continental began operating Boeing 707s to Stapleton, initially under weight restrictions due to Stapleton's runway weight capacity. (Scheduled 707s started in August 1959.) [3]

Runway 17/35 and a new terminal building opened in 1964; [13] runway 17L opened sometime between 1975 and 1980. Stapleton adopted the "International" name in 1964, but its first nonstop international flight came in 1968, when Western began flights to Calgary. [4] The Boeing 747 was introduced to Stapleton on Continental's Los Angeles route in 1970. [4]

In the early 1970s Frontier was in Concourse A, United occupied most of Concourse B, and Western and Continental occupied most of Concourse C. [14] United and TWA served both coasts nonstop, while Continental and Western nonstop flights only extended to the western half of the country. [15] Concourse D was built in 1972.[ citation needed ]

Post-deregulation (1978–1985)

After deregulation, Denver's four major airlines developed hubs at Stapleton. [16] United occupied Concourse B, Continental and Western occupied Concourse C and Frontier occupied Concourse D. [17] Western flew nonstop between Denver and London in 1981 and 1982, but then shifted resources to Salt Lake City and Los Angeles; Denver had ceased to be a Western hub by the time Delta acquired that airline in 1987. [18] In 1983 Arrow Air introduced transatlantic services to London and Manchester, and Condor flew a weekly charter to Frankfurt, Germany. Southwest Airlines and People Express tried low-cost service to Denver in the mid-1980s, but Southwest withdrew and People Express was acquired by Continental. [19]

In September 1982 the first revenue flight of the Boeing 767 arrived at Stapleton, a United flight from O'Hare International Airport in Chicago. [20]

During the energy boom of the early 1980s, several skyscrapers were built in downtown Denver, including Republic Plaza (Denver's tallest at 714′). Due to Stapleton's location 3 miles (4.8 km) east of downtown, the Federal Aviation Administration imposed a building height restriction of 700'-715' (depending on the building's position). This allowed an unimpeded glide slope for runways (8L/26R) and (8R/26L). The height restriction was lifted in 1995, well after the city's skyscrapers had been erected.[ citation needed ]

Decommissioning (1985–1995)

Two Convair 580s of the Denver-based Aspen Airways at Stapleton in 1986 Convair 580 N5818 Aspen Aws DEN Stapleton 20.07.86 edited-3.jpg
Two Convair 580s of the Denver-based Aspen Airways at Stapleton in 1986

By the 1980s, plans were under way to replace Stapleton, which had a number of problems, including:

The Colorado General Assembly brokered a deal in 1985 to annex a plot of land in Adams County into the city of Denver, and use that land to build a new airport. Adams County voters approved the plan in 1988, and Denver voters approved the plan in a 1989 referendum.

USGS photo of Stapleton International Airport looking north, June 1993, shortly before its closure. Runway 17R/35L crosses Interstate 70 at its midpoint. Jun1993-StapletonAirportDenver.jpg
USGS photo of Stapleton International Airport looking north, June 1993, shortly before its closure. Runway 17R/35L crosses Interstate 70 at its midpoint.

To combat congestion, runway 18/36 was added in the 1980s and the terminal was again expanded with the $250-million (or $58-million according to the New York Times [21] ), 24-gate Concourse E opening in 1988, despite Denver's replacement airport already being under construction. [22] [23] [24] By the early 1990s, Concourses A and B were exclusively used by United and United Express; Continental used most of Concourses C and D, and most other airlines moved to Concourse E. [25] In the early 1990s, several charter services to the United Kingdom were introduced, and Martinair inaugurated services to Amsterdam until Stapleton's closure. [26] Continental closed its Stapleton pilot and flight attendant bases in October 1994, reducing operations and making United the airport's largest carrier. [27] On the other hand, despite leaving Stapleton in the 1980s due to congestion, the new Denver International Airport would eventually become Southwest's largest base. [28]

On February 27, 1995, Delta Flight 569 from Dallas/Ft.Worth was the last revenue flight to land at Stapleton, scheduled for 7:59 pm. [29] Later that evening, air traffic controller George Hosford cleared the last revenue flight – Continental Flight 34, a McDonnell Douglas DC-10 bound for London′s Gatwick Airport scheduled to depart at 8:30 pm but delayed– to take off from Stapleton at 9:27 pm. [30] [31] [32] [24] [33] The aircraft was piloted by Captain Gary "Gomo" Greer, First Officer Scott Nutter and Second Officer Bob Horn. After Flight 34 cleared the runway at 9:39 pm, [31] the airport was shut down, marking the end of 65 years of service. [32] A convoy of ground service equipment and other vehicles (rental cars, baggage carts, fuel trucks, etc.) traveled to the new Denver International Airport (DEN), [34] [35] which opened at 12:01 am on February 28. [1] [31] [36]

Post-closure redevelopment

Control tower at Stapleton photographed from top level of close-in parking structure, 1995 Stapleton International Airport control tower.jpg
Control tower at Stapleton photographed from top level of close-in parking structure, 1995
Former Stapleton International Airport (February 6, 2006) Stapleton International Airport 1.jpg
Former Stapleton International Airport (February 6, 2006)

When it closed in 1995, Stapleton had six runways (two sets of three parallel runways) and five terminal concourses. The runways at Stapleton were then marked with large yellow "X"s, which indicated it was no longer legal or safe for aircraft to land there. The IATA and ICAO airport codes of DEN and KDEN were transferred to the new DIA, to coincide with the same changes in airline and ATC computers, to ensure that flights to Denver would land at the new DIA. [33] The main reason the decision was made to close the airport was because the runways were too close together. This would mean air traffic controllers would have to stagger airplane movements. Also, most of the runways were too short, considering the fact that the airport was at 5,333 ft above sea level. Denver International Airport runways are all at or over 12,000 feet in length (runway 16/34L is 16,000 feet).

While Denver International was being built, planners began to consider how the Stapleton site would be redeveloped. A private group of Denver civic leaders, the Stapleton Development Foundation, convened in 1990 and produced a master plan for the site in 1995, emphasizing a pedestrian-oriented design rather than the automobile-oriented designs found in many other planned developments.

Denver sought tenants for Stapleton's terminal and concourses, but these buildings proved ill-suited for alternative uses. A July 1997 hailstorm punched several thousand holes in the roofs of the old terminal and concourses, causing water damage, which compelled the city to tear them down. The airport's 12-story control tower was retained and served for a time as part of the new Punch Bowl Social, a restaurant and social gathering spot. The office building attached to the tower housed the kitchens and social areas; the tower is closed to public access but is available for private tours. [37]

Most of Stapleton's airport infrastructure has been removed, except for the control tower and some hangars, used by Denver Police Academy and by Arise Church Denver among others. [33] The final parking structure was torn down to make room for the "Central Park West" section of the housing development in May 2011.[ citation needed ] While not part of the former airport, United - Stapleton's former largest carrier and current largest airline at Denver International - does operate a training center in the former Stapleton grounds.


UAL Douglas DC-6 N37514 on the northwest maintenance ramp of Stapleton, September 1966 6609-UAL-DC-6-NorthRampStapletonDEN.jpg
UAL Douglas DC-6 N37514 on the northwest maintenance ramp of Stapleton, September 1966

At the time of its decommissioning, the airport covered 4,700 acres (7.3 sq mi; 19.0 km2) and had six runways:

The terminal had five concourses:

Accidents and incidents

Several major incidents occurred at Stapleton:

See also

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PD-icon.svg This article incorporates public domain material from the Air Force Historical Research Agency