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

Arrival Airport:

Distance from BWI to CPS:
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- About this route
- BWI Airport Information
- CPS Airport Information
- Facts about BWI
- Facts about CPS
- Map of Nearest Airports to BWI
- List of Nearest Airports to BWI
- Map of Furthest Airports from BWI
- List of Furthest Airports from BWI
- 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 Baltimore/Washington International Thurgood Marshall Airport (BWI), between Baltimore, Maryland and Washington, D.C., United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 726 miles (or 1,168 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 Baltimore/Washington International Thurgood Marshall 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: | BWI / KBWI |
Airport Name: | Baltimore/Washington International Thurgood Marshall Airport |
Location: | between Baltimore, Maryland and Washington, D.C., United States |
GPS Coordinates: | 39°10'31"N by 76°40'5"W |
Area Served: | Baltimore–Washington Metropolitan Area |
Operator/Owner: | Maryland Aviation Administration |
Airport Type: | Public |
Elevation: | 146 feet (45 meters) |
# of Runways: | 4 |
View all routes: | Routes from BWI |
More Information: | BWI 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 Baltimore/Washington International Thurgood Marshall Airport (BWI):
- The BWI Rail Station opened in 1980, providing a rail connection to passengers on the busy Northeast Corridor through Amtrak.
- The closest airport to Baltimore/Washington International Thurgood Marshall Airport (BWI) is Tipton Airport (FME), which is located only 8 miles (13 kilometers) SW of BWI.
- Because of Baltimore/Washington International Thurgood Marshall Airport's relatively low elevation of 146 feet, planes can take off or land at Baltimore/Washington International Thurgood Marshall 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 Baltimore/Washington International Thurgood Marshall Airport (BWI) is Margaret River Airport (MGV), which is located 11,691 miles (18,814 kilometers) away in Margaret River, Western Australia, Australia.
- Baltimore/Washington International Thurgood Marshall Airport (BWI) has 4 runways.
- Baltimore/Washington International Thurgood Marshall Airport handled 22,391,785 passengers last year.
- On July 12, 2013, BWI Airport and the Maryland Aviation Administration launched a 3-year $125 million construction project.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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 opened in 1929 as Curtiss-Steinberg Airport.
- 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.