Nonstop flight route between Coatesville, Pennsylvania, United States and St. George, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from CTH to STG:
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- About this route
- CTH Airport Information
- STG Airport Information
- Facts about CTH
- Facts about STG
- 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 STG
- List of Nearest Airports to STG
- Map of Furthest Airports from STG
- List of Furthest Airports from STG
About this route:
A direct, nonstop flight between Chester County G. O. Carlson Airport (CTH), Coatesville, Pennsylvania, United States and St. George Airport (STG), St. George, Alaska, United States would travel a Great Circle distance of 4,108 miles (or 6,610 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 St. George 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 Chester County G. O. Carlson Airport and St. George Airport. 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: |
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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: | STG / PAPB |
Airport Names: |
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Location: | St. George, Alaska, United States |
GPS Coordinates: | 56°34'37"N by 169°39'48"W |
Area Served: | St. George, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Central Region |
Airport Type: | Public |
Elevation: | 125 feet (38 meters) |
# of Runways: | 1 |
View all routes: | Routes from STG |
More Information: | STG Maps & Info |
Facts about Chester County G. O. Carlson Airport (CTH):
- 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".
- Chester County G. O. Carlson Airport (CTH) currently has only 1 runway.
- As part of the 12-year-plan for the airport, many projects are planned.
- 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.
- Chester County's airport identifier was 40N but it has recently changed to MQS.
- 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.
Facts about St. George Airport (STG):
- In addition to being known as "St. George Airport", another name for STG is "PBV".
- St. George Airport (STG) currently has only 1 runway.
- As per Federal Aviation Administration records, the airport had 604 passenger boardings in calendar year 2008, 610 enplanements in 2009, and 643 in 2010.
- The closest airport to St. George Airport (STG) is St. Paul Island Airport (SNP), which is located 46 miles (74 kilometers) NNW of STG.
- The furthest airport from St. George Airport (STG) is Cape Town International Airport (CPT), which is located 10,827 miles (17,424 kilometers) away in Cape Town, South Africa.
- Because of St. George Airport's relatively low elevation of 125 feet, planes can take off or land at St. George 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.