Nonstop flight route between Aberdeen Proving Ground, Maryland, United States and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from APG to CPS:
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- About this route
- APG Airport Information
- CPS Airport Information
- Facts about APG
- Facts about CPS
- Map of Nearest Airports to APG
- List of Nearest Airports to APG
- Map of Furthest Airports from APG
- List of Furthest Airports from APG
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Phillips Army Airfield (APG), Aberdeen Proving Ground, Maryland, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 753 miles (or 1,211 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 Phillips Army Airfield and St. Louis Downtown Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | APG / KAPG |
Airport Name: | Phillips Army Airfield |
Location: | Aberdeen Proving Ground, Maryland, United States |
GPS Coordinates: | 39°27'57"N by 76°10'8"W |
Operator/Owner: | United States Army |
Airport Type: | Military |
Elevation: | 57 feet (17 meters) |
# of Runways: | 3 |
View all routes: | Routes from APG |
More Information: | APG Maps & Info |
Arrival 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 |
Facts about Phillips Army Airfield (APG):
- Phillips Army Airfield (APG) has 3 runways.
- The closest airport to Phillips Army Airfield (APG) is Martin State Airport (MTN), which is located only 16 miles (26 kilometers) SW of APG.
- Because of Phillips Army Airfield's relatively low elevation of 57 feet, planes can take off or land at Phillips Army Airfield 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.
- The furthest airport from Phillips Army Airfield (APG) is Margaret River Airport (MGV), which is located 11,706 miles (18,838 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.