Nonstop flight route between Tres Arroyos, Buenos Aires Province, Argentina and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from OYO to CPS:
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- About this route
- OYO Airport Information
- CPS Airport Information
- Facts about OYO
- Facts about CPS
- Map of Nearest Airports to OYO
- List of Nearest Airports to OYO
- Map of Furthest Airports from OYO
- List of Furthest Airports from OYO
- 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 Tres Arroyos Airport (OYO), Tres Arroyos, Buenos Aires Province, Argentina and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 5,644 miles (or 9,084 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 Tres Arroyos Airport and St. Louis Downtown 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 Tres Arroyos Airport and St. Louis Downtown Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | OYO / SAZH |
Airport Name: | Tres Arroyos Airport |
Location: | Tres Arroyos, Buenos Aires Province, Argentina |
GPS Coordinates: | 38°23'12"S by 60°19'46"W |
Area Served: | Tres Arroyos |
Airport Type: | Public |
Elevation: | 400 feet (122 meters) |
# of Runways: | 3 |
View all routes: | Routes from OYO |
More Information: | OYO 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 Tres Arroyos Airport (OYO):
- The furthest airport from Tres Arroyos Airport (OYO) is Dalian Zhoushuizi International Airport (DLC), which is nearly antipodal to Tres Arroyos Airport (meaning Tres Arroyos Airport is almost on the exact opposite side of the Earth from Dalian Zhoushuizi International Airport), and is located 12,328 miles (19,841 kilometers) away in Dalian, Liaoning, China.
- Tres Arroyos Airport (OYO) has 3 runways.
- Because of Tres Arroyos Airport's relatively low elevation of 400 feet, planes can take off or land at Tres Arroyos 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 Tres Arroyos Airport (OYO) is Necochea Airport (NEC), which is located 82 miles (132 kilometers) E of OYO.
Facts about St. Louis Downtown Airport (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.
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.
- The airport opened in 1929 as Curtiss-Steinberg Airport.