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

Arrival Airport:

Distance from FDK to CPS:
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- About this route
- FDK Airport Information
- CPS Airport Information
- Facts about FDK
- Facts about CPS
- Map of Nearest Airports to FDK
- List of Nearest Airports to FDK
- Map of Furthest Airports from FDK
- List of Furthest Airports from FDK
- 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 Frederick Municipal Airport (FDK), Frederick, Maryland, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 688 miles (or 1,108 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 Frederick Municipal Airport 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: | FDK / KFDK |
Airport Name: | Frederick Municipal Airport |
Location: | Frederick, Maryland, United States |
GPS Coordinates: | 39°25'2"N by 77°22'27"W |
Operator/Owner: | City of Frederick |
Airport Type: | Public |
Elevation: | 303 feet (92 meters) |
# of Runways: | 2 |
View all routes: | Routes from FDK |
More Information: | FDK 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 Frederick Municipal Airport (FDK):
- Frederick Municipal Airport is a public airport located in the city of Frederick, in Frederick County, Maryland, United States.
- Frederick Municipal Airport (FDK) has 2 runways.
- The closest airport to Frederick Municipal Airport (FDK) is Montgomery County Airpark (GAI), which is located 21 miles (33 kilometers) SSE of FDK.
- Frederick Municipal Airport is classified as a general aviation airport.
- Because of Frederick Municipal Airport's relatively low elevation of 303 feet, planes can take off or land at Frederick Municipal 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 Frederick Municipal Airport (FDK) is Margaret River Airport (MGV), which is located 11,649 miles (18,748 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- 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 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.
- 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.