Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Summerside, Prince Edward Island, Canada:
Departure Airport:

Arrival Airport:

Distance from CPS to YSU:
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- About this route
- CPS Airport Information
- YSU Airport Information
- Facts about CPS
- Facts about YSU
- 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 YSU
- List of Nearest Airports to YSU
- Map of Furthest Airports from YSU
- List of Furthest Airports from YSU
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Summerside Airport (YSU), Summerside, Prince Edward Island, Canada would travel a Great Circle distance of 1,438 miles (or 2,315 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 Summerside 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: | YSU / CYSU |
Airport Names: |
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Location: | Summerside, Prince Edward Island, Canada |
GPS Coordinates: | 46°26'26"N by 63°50'0"W |
Operator/Owner: | Slemon Park Corporation |
Airport Type: | public |
Elevation: | 56 feet (17 meters) |
# of Runways: | 1 |
View all routes: | Routes from YSU |
More Information: | YSU Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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 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 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.
Facts about Summerside Airport (YSU):
- In addition to being known as "Summerside Airport", another name for YSU is "CFB Summerside".
- The furthest airport from Summerside Airport (YSU) is Albany Airport (ALH), which is located 11,638 miles (18,729 kilometers) away in Albany, Western Australia, Australia.
- Summerside Airport (YSU) currently has only 1 runway.
- The Summerside Airport's airfield and terminal facilities are located in the township of Lot 17 and not in the city of Summerside proper.
- The closest airport to Summerside Airport (YSU) is Charlottetown Airport (YYG), which is located 36 miles (57 kilometers) ESE of YSU.
- The airport was formerly a military field, established in 1940 as RCAF Station Summerside, changing its name to CFB Summerside in 1968.
- Because of Summerside Airport's relatively low elevation of 56 feet, planes can take off or land at Summerside 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.