Nonstop flight route between South Indian Lake, Manitoba, Canada and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from XSI to CPS:
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- About this route
- XSI Airport Information
- CPS Airport Information
- Facts about XSI
- Facts about CPS
- Map of Nearest Airports to XSI
- List of Nearest Airports to XSI
- Map of Furthest Airports from XSI
- List of Furthest Airports from XSI
- 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 South Indian Lake Airport (XSI), South Indian Lake, Manitoba, Canada and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 1,321 miles (or 2,125 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 South Indian Lake 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: | XSI / CZSN |
Airport Name: | South Indian Lake Airport |
Location: | South Indian Lake, Manitoba, Canada |
GPS Coordinates: | 56°47'34"N by 98°54'25"W |
Operator/Owner: | Government of Manitoba |
Airport Type: | Public |
Elevation: | 951 feet (290 meters) |
# of Runways: | 1 |
View all routes: | Routes from XSI |
More Information: | XSI 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 South Indian Lake Airport (XSI):
- The furthest airport from South Indian Lake Airport (XSI) is Margaret River Airport (MGV), which is located 10,194 miles (16,405 kilometers) away in Margaret River, Western Australia, Australia.
- Because of South Indian Lake Airport's relatively low elevation of 951 feet, planes can take off or land at South Indian Lake 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.
- South Indian Lake Airport (XSI) currently has only 1 runway.
- The closest airport to South Indian Lake Airport (XSI) is Leaf Rapids Airport (YLR), which is located 45 miles (73 kilometers) WSW of XSI.
Facts about St. Louis Downtown Airport (CPS):
- 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 airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.