Nonstop flight route between Coatesville, Pennsylvania, United States and Yecheon, South Korea:
Departure Airport:

Arrival Airport:

Distance from CTH to YEC:
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- About this route
- CTH Airport Information
- YEC Airport Information
- Facts about CTH
- Facts about YEC
- Map of Nearest Airports to CTH
- List of Nearest Airports to CTH
- Map of Furthest Airports from CTH
- List of Furthest Airports from CTH
- Map of Nearest Airports to YEC
- List of Nearest Airports to YEC
- Map of Furthest Airports from YEC
- List of Furthest Airports from YEC
About this route:
A direct, nonstop flight between Chester County G. O. Carlson Airport (CTH), Coatesville, Pennsylvania, United States and Yecheon Air Base (YEC), Yecheon, South Korea would travel a Great Circle distance of 6,925 miles (or 11,144 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 Chester County G. O. Carlson Airport and Yecheon Air Base, 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 Chester County G. O. Carlson Airport and Yecheon Air Base. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CTH / KMQS |
Airport Names: |
|
Location: | Coatesville, Pennsylvania, United States |
GPS Coordinates: | 39°58'44"N by 75°51'56"W |
Operator/Owner: | Chester County Area Airport Authority |
Airport Type: | Public |
Elevation: | 660 feet (201 meters) |
# of Runways: | 1 |
View all routes: | Routes from CTH |
More Information: | CTH Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | YEC / RKTY |
Airport Name: | Yecheon Air Base |
Location: | Yecheon, South Korea |
GPS Coordinates: | 36°37'54"N by 128°21'17"E |
Airport Type: | Military |
Elevation: | 354 feet (108 meters) |
# of Runways: | 1 |
View all routes: | Routes from YEC |
More Information: | YEC Maps & Info |
Facts about Chester County G. O. Carlson Airport (CTH):
- Chester County's airport identifier was 40N but it has recently changed to MQS.
- Chester County G. O. Carlson Airport (CTH) currently has only 1 runway.
- The closest airport to Chester County G. O. Carlson Airport (CTH) is Brandywine Airport (OQN), which is located only 15 miles (24 kilometers) E of CTH.
- In addition to being known as "Chester County G. O. Carlson Airport", another name for CTH is "MQS".
- The airport covers 250 acres.
- Because of Chester County G. O. Carlson Airport's relatively low elevation of 660 feet, planes can take off or land at Chester County G. O. Carlson 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 Chester County G. O. Carlson Airport (CTH) is Margaret River Airport (MGV), which is located 11,702 miles (18,833 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Yecheon Air Base (YEC):
- The furthest airport from Yecheon Air Base (YEC) is Capitán de Corbeta Carlos A. Curbelo International Airport (PDP), which is nearly antipodal to Yecheon Air Base (meaning Yecheon Air Base is almost on the exact opposite side of the Earth from Capitán de Corbeta Carlos A. Curbelo International Airport), and is located 12,208 miles (19,646 kilometers) away in Maldonado/Punta del Este, Maldonado, Uruguay.
- Because of Yecheon Air Base's relatively low elevation of 354 feet, planes can take off or land at Yecheon Air Base 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 Yecheon Air Base (YEC) is Cheongju International Airport (CJJ), which is located 48 miles (77 kilometers) W of YEC.
- Yecheon Air Base (YEC) currently has only 1 runway.