Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Yankton, South Dakota, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to YKN:
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- About this route
- CPS Airport Information
- YKN Airport Information
- Facts about CPS
- Facts about YKN
- 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 YKN
- List of Nearest Airports to YKN
- Map of Furthest Airports from YKN
- List of Furthest Airports from YKN
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Chan Gurney Municipal Airport (YKN), Yankton, South Dakota, United States would travel a Great Circle distance of 483 miles (or 777 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 Chan Gurney Municipal 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: | YKN / KYKN |
Airport Name: | Chan Gurney Municipal Airport |
Location: | Yankton, South Dakota, United States |
GPS Coordinates: | 42°55'0"N by 97°23'8"W |
Operator/Owner: | Yankton, South Dakota |
Airport Type: | City of Yankton |
Elevation: | 398 feet (121 meters) |
# of Runways: | 2 |
View all routes: | Routes from YKN |
More Information: | YKN Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
- 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 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 Chan Gurney Municipal Airport (YKN):
- Chan Gurney Municipal Airport (YKN) has 2 runways.
- The furthest airport from Chan Gurney Municipal Airport (YKN) is Margaret River Airport (MGV), which is located 10,586 miles (17,036 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Chan Gurney Municipal Airport (YKN) is Sioux Falls Regional Airport (FSD), which is located 56 miles (91 kilometers) NE of YKN.
- Because of Chan Gurney Municipal Airport's relatively low elevation of 398 feet, planes can take off or land at Chan Gurney Municipal 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.