Nonstop flight route between Chiang Mai, Thailand and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from CNX to CPS:
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- About this route
- CNX Airport Information
- CPS Airport Information
- Facts about CNX
- Facts about CPS
- Map of Nearest Airports to CNX
- List of Nearest Airports to CNX
- Map of Furthest Airports from CNX
- List of Furthest Airports from CNX
- 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 Chiang Mai International Airport (CNX), Chiang Mai, Thailand and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 8,431 miles (or 13,569 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 Chiang Mai International 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 Chiang Mai International 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: | CNX / VTCC |
Airport Names: |
|
Location: | Chiang Mai, Thailand |
GPS Coordinates: | 18°46'0"N by 98°57'45"E |
Area Served: | Chiang Mai Lamphun |
Operator/Owner: | Royal Thai Air Force |
Airport Type: | Public / Military |
Elevation: | 1036 feet (316 meters) |
# of Runways: | 1 |
View all routes: | Routes from CNX |
More Information: | CNX 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 Chiang Mai International Airport (CNX):
- Chiang Mai International Airport (CNX) currently has only 1 runway.
- In addition to being known as "Chiang Mai International Airport", another name for CNX is "ท่าอากาศยานเชียงใหม่".
- The closest airport to Chiang Mai International Airport (CNX) is Lampang Airport (LPT), which is located 49 miles (79 kilometers) SE of CNX.
- Chiang Mai International Airport handled 5,463,921 passengers last year.
- It is the major gateway to the north of Thailand, and currently the fourth busiest airport in the country.
- The furthest airport from Chiang Mai International Airport (CNX) is Capitán FAP Renán Elías Olivera International Airport (PIO), which is located 11,965 miles (19,256 kilometers) away in Pisco, Peru.
- Among the ongoing upgrades in 2014, apron will be expanded for larger planes, operating hours extended 6 hours to 24 hours, international arrival hall and domestic departure halls areas tripled.
Facts about St. Louis Downtown Airport (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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
- 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.
- 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.