Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Saül, French Guiana:
Departure Airport:

Arrival Airport:

Distance from CPS to XAU:
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- About this route
- CPS Airport Information
- XAU Airport Information
- Facts about CPS
- Facts about XAU
- 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 XAU
- List of Nearest Airports to XAU
- Map of Furthest Airports from XAU
- List of Furthest Airports from XAU
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Saül Airport (XAU), Saül, French Guiana would travel a Great Circle distance of 3,350 miles (or 5,391 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 large distance between St. Louis Downtown Airport and Saül Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between St. Louis Downtown Airport and Saül Airport. You'll see that it will travel the same route of the red line on this map!
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: | XAU / SOOS |
Airport Name: | Saül Airport |
Location: | Saül, French Guiana |
GPS Coordinates: | 3°36'48"N by 53°12'15"W |
Area Served: | Saül, French Guiana |
Operator/Owner: | Conseil Général de la Guyane |
Elevation: | 735 feet (224 meters) |
# of Runways: | 1 |
View all routes: | Routes from XAU |
More Information: | XAU Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
- 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 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 Saül Airport (XAU):
- The closest airport to Saül Airport (XAU) is Maripasoula Airport (MPY), which is located 58 miles (93 kilometers) W of XAU.
- Saül Airport (XAU) currently has only 1 runway.
- Because of Saül Airport's relatively low elevation of 735 feet, planes can take off or land at Saül 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 furthest airport from Saül Airport (XAU) is Namrole Airport (NRE), which is nearly antipodal to Saül Airport (meaning Saül Airport is almost on the exact opposite side of the Earth from Namrole Airport), and is located 12,419 miles (19,986 kilometers) away in Buru, Indonesia.