Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Arapahoe County, Colorado, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to APA:
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- About this route
- CPS Airport Information
- APA Airport Information
- Facts about CPS
- Facts about APA
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
- Map of Nearest Airports to APA
- List of Nearest Airports to APA
- Map of Furthest Airports from APA
- List of Furthest Airports from APA
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Centennial Airport (APA), Arapahoe County, Colorado, United States would travel a Great Circle distance of 790 miles (or 1,272 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between St. Louis Downtown Airport and Centennial Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | APA / KAPA |
Airport Name: | Centennial Airport |
Location: | Arapahoe County, Colorado, United States |
GPS Coordinates: | 39°34'12"N by 104°50'57"W |
Area Served: | Denver, Colorado |
Operator/Owner: | Arapahoe County Public Airport Authority |
Airport Type: | Public |
Elevation: | 5885 feet (1,794 meters) |
# of Runways: | 3 |
View all routes: | Routes from APA |
More Information: | APA Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- The two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
- The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
- The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- St. Louis Downtown Airport (CPS) has 3 runways.
Facts about Centennial Airport (APA):
- The furthest airport from Centennial Airport (APA) is Sir Gaëtan Duval Airport (RRG), which is located 10,899 miles (17,540 kilometers) away in Rodrigues Island, Mauritius.
- Centennial Airport (APA) has 3 runways.
- In 1985 a new control tower was built.
- Centennial Airport does not offer scheduled airline passenger service.
- Because of Centennial Airport's high elevation of 5,885 feet, planes must typically fly at a faster airspeed in order to takeoff or land at APA. Combined with a high temperature, this could make APA a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Located in Dove Valley, an unincorporated area of Arapahoe County, the airport’s runways extend into Douglas County.
- The closest airport to Centennial Airport (APA) is Denver International Airport (DEN), which is located 22 miles (36 kilometers) NNE of APA.