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

Arrival Airport:

Distance from AIO to CPS:
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- About this route
- AIO Airport Information
- CPS Airport Information
- Facts about AIO
- Facts about CPS
- Map of Nearest Airports to AIO
- List of Nearest Airports to AIO
- Map of Furthest Airports from AIO
- List of Furthest Airports from AIO
- 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 Atlantic Municipal Airport (AIO), Atlantic, Iowa, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 325 miles (or 522 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 Atlantic 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: | AIO / KAIO |
Airport Name: | Atlantic Municipal Airport |
Location: | Atlantic, Iowa, United States |
GPS Coordinates: | 41°24'25"N by 95°2'48"W |
Operator/Owner: | City of Atlantic |
Airport Type: | Public |
Elevation: | 1182 feet (360 meters) |
# of Runways: | 2 |
View all routes: | Routes from AIO |
More Information: | AIO 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 Atlantic Municipal Airport (AIO):
- Atlantic Municipal Airport (AIO) has 2 runways.
- The furthest airport from Atlantic Municipal Airport (AIO) is Margaret River Airport (MGV), which is located 10,719 miles (17,251 kilometers) away in Margaret River, Western Australia, Australia.
- The Atlantic Municipal Airport is publicly owned, and it is open to the public.
- The closest airport to Atlantic Municipal Airport (AIO) is Council Bluffs Municipal Airport (CBF), which is located 38 miles (62 kilometers) WSW of AIO.
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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 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.
- 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 airport opened in 1929 as Curtiss-Steinberg Airport.
- 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.