Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Daocheng, Sichuan, China:
Departure Airport:

Arrival Airport:

Distance from CPS to DCY:
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- About this route
- CPS Airport Information
- DCY Airport Information
- Facts about CPS
- Facts about DCY
- 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 DCY
- List of Nearest Airports to DCY
- Map of Furthest Airports from DCY
- List of Furthest Airports from DCY
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Daocheng Yading Airport (DCY), Daocheng, Sichuan, China would travel a Great Circle distance of 7,700 miles (or 12,392 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 Daocheng Yading 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 Daocheng Yading 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: | DCY / |
Airport Names: |
|
Location: | Daocheng, Sichuan, China |
GPS Coordinates: | 29°19'23"N by 100°3'11"E |
Area Served: | Daocheng, Sichuan, China |
Airport Type: | Public |
Elevation: | 14472 feet (4,411 meters) |
# of Runways: | 1 |
View all routes: | Routes from DCY |
More Information: | DCY Maps & Info |
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.
- 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 Daocheng Yading Airport (DCY):
- The furthest airport from Daocheng Yading Airport (DCY) is La Florida Airport (LSC), which is located 11,910 miles (19,167 kilometers) away in La Serena, Chile.
- The closest airport to Daocheng Yading Airport (DCY) is Dêqên Shangri-La Airport (DIG), which is located 108 miles (174 kilometers) SSW of DCY.
- Construction started after the airport was approved in April 2011, with a total investment of 1.58 billion yuan.
- In addition to being known as "Daocheng Yading Airport", other names for DCY include "稻城亚丁机场", "Dàochéng Yàdīng Jīchǎng" and "ZUDC".
- Because of Daocheng Yading Airport's high elevation of 14,472 feet, planes must typically fly at a faster airspeed in order to takeoff or land at DCY. Combined with a high temperature, this could make DCY a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Daocheng Yading Airport (DCY) currently has only 1 runway.