Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Sault Ste Marie, Michigan, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to CIU:
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- About this route
- CPS Airport Information
- CIU Airport Information
- Facts about CPS
- Facts about CIU
- 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 CIU
- List of Nearest Airports to CIU
- Map of Furthest Airports from CIU
- List of Furthest Airports from CIU
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Chippewa County International Airport (CIU), Sault Ste Marie, Michigan, United States would travel a Great Circle distance of 604 miles (or 973 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 Chippewa County International 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: | CIU / KCIU |
Airport Name: | Chippewa County International Airport |
Location: | Sault Ste Marie, Michigan, United States |
GPS Coordinates: | 46°15'2"N by 84°28'20"W |
Area Served: | Sault Ste. Marie, Michigan |
Operator/Owner: | Chippewa County EDC |
Airport Type: | Public |
Elevation: | 799 feet (244 meters) |
# of Runways: | 2 |
View all routes: | Routes from CIU |
More Information: | CIU Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- 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.
- 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 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 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.
Facts about Chippewa County International Airport (CIU):
- As per the Federal Aviation Administration, this airport had 13,269 passenger boardings in calendar year 2008, 13,173 in 2009, and 14,349 in 2010.
- The airport opened a new passenger terminal in September 2002.
- The furthest airport from Chippewa County International Airport (CIU) is Margaret River Airport (MGV), which is located 11,103 miles (17,869 kilometers) away in Margaret River, Western Australia, Australia.
- Chippewa County International Airport (CIU) has 2 runways.
- Because of Chippewa County International Airport's relatively low elevation of 799 feet, planes can take off or land at Chippewa County International 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 closest airport to Chippewa County International Airport (CIU) is Kincheloe Air Force Base (INR), which is located only 0 mile (0 kilometer) N of CIU.