Nonstop flight route between Pottstown, Pennsylvania, United States and Chatham, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from PTW to CYM:
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- About this route
- PTW Airport Information
- CYM Airport Information
- Facts about PTW
- Facts about CYM
- Map of Nearest Airports to PTW
- List of Nearest Airports to PTW
- Map of Furthest Airports from PTW
- List of Furthest Airports from PTW
- Map of Nearest Airports to CYM
- List of Nearest Airports to CYM
- Map of Furthest Airports from CYM
- List of Furthest Airports from CYM
About this route:
A direct, nonstop flight between Heritage Field (PTW), Pottstown, Pennsylvania, United States and Chatham Seaplane Base (CYM), Chatham, Alaska, United States would travel a Great Circle distance of 2,839 miles (or 4,569 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 Heritage Field and Chatham Seaplane 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 Heritage Field and Chatham Seaplane Base. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | PTW / KPTW |
Airport Name: | Heritage Field |
Location: | Pottstown, Pennsylvania, United States |
GPS Coordinates: | 40°14'21"N by 75°33'24"W |
Area Served: | Pottstown, Pennsylvania |
Operator/Owner: | Limerick Aviation LP |
Airport Type: | Public use |
Elevation: | 309 feet (94 meters) |
# of Runways: | 1 |
View all routes: | Routes from PTW |
More Information: | PTW Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CYM / |
Airport Name: | Chatham Seaplane Base |
Location: | Chatham, Alaska, United States |
GPS Coordinates: | 57°30'54"N by 134°56'45"W |
Area Served: | Chatham, Alaska |
Operator/Owner: | Chatham Cannery Ltd. |
Airport Type: | Public use |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from CYM |
More Information: | CYM Maps & Info |
Facts about Heritage Field (PTW):
- Because of Heritage Field's relatively low elevation of 309 feet, planes can take off or land at Heritage Field 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.
- This is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation reliever airport.
- Heritage Field (PTW) currently has only 1 runway.
- The closest airport to Heritage Field (PTW) is Quakertown Airport (UKT), which is located only 16 miles (27 kilometers) NE of PTW.
- The furthest airport from Heritage Field (PTW) is Margaret River Airport (MGV), which is located 11,706 miles (18,839 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Chatham Seaplane Base (CYM):
- Because of Chatham Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Chatham Seaplane 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 furthest airport from Chatham Seaplane Base (CYM) is Port Alfred Airport (AFD), which is located 10,576 miles (17,020 kilometers) away in Port Alfred, South Africa.
- Chatham Seaplane Base (CYM) currently has only 1 runway.
- The closest airport to Chatham Seaplane Base (CYM) is Angoon Seaplane Base (AGN), which is located only 13 miles (22 kilometers) E of CYM.