Nonstop flight route between Attu Island, Alaska, United States and Williams Harbour, Newfoundland and Labrador, Canada:
Departure Airport:

Arrival Airport:

Distance from ATU to YWM:
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- About this route
- ATU Airport Information
- YWM Airport Information
- Facts about ATU
- Facts about YWM
- Map of Nearest Airports to ATU
- List of Nearest Airports to ATU
- Map of Furthest Airports from ATU
- List of Furthest Airports from ATU
- Map of Nearest Airports to YWM
- List of Nearest Airports to YWM
- Map of Furthest Airports from YWM
- List of Furthest Airports from YWM
About this route:
A direct, nonstop flight between Casco Cove Coast Guard Station (ATU), Attu Island, Alaska, United States and Williams Harbour Airport (YWM), Williams Harbour, Newfoundland and Labrador, Canada would travel a Great Circle distance of 4,625 miles (or 7,444 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 Casco Cove Coast Guard Station and Williams Harbour 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 Casco Cove Coast Guard Station and Williams Harbour Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | ATU / PAAT |
Airport Names: |
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Location: | Attu Island, Alaska, United States |
GPS Coordinates: | 52°49'57"N by 173°10'32"E |
Operator/Owner: | U.S. Coast Guard 17th Dist. |
Airport Type: | Private use |
Elevation: | 88 feet (27 meters) |
# of Runways: | 1 |
View all routes: | Routes from ATU |
More Information: | ATU Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | YWM / |
Airport Names: |
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Location: | Williams Harbour, Newfoundland and Labrador, Canada |
GPS Coordinates: | 52°34'3"N by 55°47'5"W |
Operator/Owner: | Government of Newfoundland and Labrador |
Airport Type: | Public |
Elevation: | 73 feet (22 meters) |
# of Runways: | 1 |
View all routes: | Routes from YWM |
More Information: | YWM Maps & Info |
Facts about Casco Cove Coast Guard Station (ATU):
- The island is protected as part of the National Parks Trust territory and few people visit the island or area, as it is restricted.
- Because of Casco Cove Coast Guard Station's relatively low elevation of 88 feet, planes can take off or land at Casco Cove Coast Guard Station 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 Casco Cove Coast Guard Station (ATU) is Eareckson Air Station (SYA), which is located 40 miles (65 kilometers) ESE of ATU.
- Casco Cove Coast Guard Station is a military facility and private use airfield on Attu Island, one of the Aleutian Islands in the U.S.
- Casco Cove Coast Guard Station (ATU) currently has only 1 runway.
- Casco Cove is one of the most isolated and remote airports in the United States.
- In addition to being known as "Casco Cove Coast Guard Station", other names for ATU include "LORAN Station Attu" and "(former Naval Air Facility Attu)".
- The furthest airport from Casco Cove Coast Guard Station (ATU) is Cape Town International Airport (CPT), which is located 10,631 miles (17,109 kilometers) away in Cape Town, South Africa.
Facts about Williams Harbour Airport (YWM):
- The closest airport to Williams Harbour Airport (YWM) is St. Lewis (Fox Harbour) Airport (YFX), which is located only 14 miles (23 kilometers) SSE of YWM.
- The furthest airport from Williams Harbour Airport (YWM) is Albany Airport (ALH), which is located 11,179 miles (17,991 kilometers) away in Albany, Western Australia, Australia.
- Williams Harbour Airport (YWM) currently has only 1 runway.
- In addition to being known as "Williams Harbour Airport", another name for YWM is "CCA6".
- Because of Williams Harbour Airport's relatively low elevation of 73 feet, planes can take off or land at Williams Harbour 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.