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

Arrival Airport:

Distance from YAM to CPS:
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- About this route
- YAM Airport Information
- CPS Airport Information
- Facts about YAM
- Facts about CPS
- Map of Nearest Airports to YAM
- List of Nearest Airports to YAM
- Map of Furthest Airports from YAM
- List of Furthest Airports from YAM
- Map of Nearest Airports to CPS
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- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Sault Ste. Marie Airport (YAM), Sault Ste. Marie, Ontario, Canada and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 617 miles (or 994 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 Sault Ste. Marie 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: | YAM / CYAM |
Airport Name: | Sault Ste. Marie Airport |
Location: | Sault Ste. Marie, Ontario, Canada |
GPS Coordinates: | 46°29'5"N by 84°30'33"W |
Operator/Owner: | Sault Ste. Marie Airport Development Corporation |
Airport Type: | Public |
Elevation: | 632 feet (193 meters) |
# of Runways: | 2 |
View all routes: | Routes from YAM |
More Information: | YAM 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 Sault Ste. Marie Airport (YAM):
- The airport is classified as an airport of entry by NAV CANADA and is staffed by the Canada Border Services Agency.
- The closest airport to Sault Ste. Marie Airport (YAM) is Chippewa County International Airport (CIU), which is located only 16 miles (26 kilometers) S of YAM.
- The Canadian government opened the airport in 1961 and operated it until 1998, when it handed control over to the newly formed Sault Ste.
- Because of Sault Ste. Marie Airport's relatively low elevation of 632 feet, planes can take off or land at Sault Ste. Marie 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.
- Sault Ste. Marie Airport (YAM) has 2 runways.
- The furthest airport from Sault Ste. Marie Airport (YAM) is Margaret River Airport (MGV), which is located 11,093 miles (17,853 kilometers) away in Margaret River, Western Australia, Australia.
Facts about St. Louis Downtown Airport (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.
- 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 closed in 1959 and reopened six years later as Bi-State Parks Airport.
- 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.