Nonstop flight route between Alert, Nunavut, Canada and SeaTac (near Seattle and Tacoma), Washington, United States:
Departure Airport:

Arrival Airport:

Distance from YLT to SEA:
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- About this route
- YLT Airport Information
- SEA Airport Information
- Facts about YLT
- Facts about SEA
- Map of Nearest Airports to YLT
- List of Nearest Airports to YLT
- Map of Furthest Airports from YLT
- List of Furthest Airports from YLT
- Map of Nearest Airports to SEA
- List of Nearest Airports to SEA
- Map of Furthest Airports from SEA
- List of Furthest Airports from SEA
About this route:
A direct, nonstop flight between Alert Airport (YLT), Alert, Nunavut, Canada and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 2,712 miles (or 4,364 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 Alert Airport and Seattle–Tacoma International 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 Alert Airport and Seattle–Tacoma International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | YLT / CYLT |
Airport Name: | Alert Airport |
Location: | Alert, Nunavut, Canada |
GPS Coordinates: | 82°31'4"N by 62°16'50"W |
Operator/Owner: | DND/1CdnAirDiv Alert AMO Ottawa |
Airport Type: | Military |
Elevation: | 100 feet (30 meters) |
# of Runways: | 1 |
View all routes: | Routes from YLT |
More Information: | YLT Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SEA / KSEA |
Airport Names: |
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Location: | SeaTac (near Seattle and Tacoma), Washington, United States |
GPS Coordinates: | 47°26'56"N by 122°18'33"W |
Area Served: | Seattle; Tacoma, Washington, US |
Airport Type: | Public |
Elevation: | 433 feet (132 meters) |
# of Runways: | 3 |
View all routes: | Routes from SEA |
More Information: | SEA Maps & Info |
Facts about Alert Airport (YLT):
- Alert Airport is the world's northernmost permanent airport, located at Alert, Nunavut, Canada, approximately 830 km south of the true North Pole.
- The airport's fire and rescue operations are supported by a 2012 KME/Fort Garry Fire Truck ARFF.
- The furthest airport from Alert Airport (YLT) is Teniente Rodolfo Marsh Airport (TNM), which is located 9,999 miles (16,092 kilometers) away in Villa Las Estrellas, Antarctica.
- The closest airport to Alert Airport (YLT) is Eureka Aerodrome (YEU), which is located 299 miles (481 kilometers) WSW of YLT.
- Because of Alert Airport's relatively low elevation of 100 feet, planes can take off or land at Alert 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.
- Alert Airport (YLT) currently has only 1 runway.
Facts about Seattle–Tacoma International Airport (SEA):
- In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
- The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.
- The airport is also served both by the King County Metro bus system and Sound Transit regional express buses.
- Seattle–Tacoma International Airport (SEA) has 3 runways.
- In 2007 the airport, together with the University of Illinois Center of Excellence for Airport Technology, became the first airport to implement an avian radar system providing 24-hour monitoring of wildlife activity across the airfield.
- Starting in the late 1980s, the Port of Seattle and a council representing local county governments considered the future of air traffic in the region and predicted that airport could reach capacity by 2000.
- Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma International 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.
- A recurring problem at the airport is misidentification of the westernmost taxiway, Taxiway Tango, as a runway.
- The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
- The airport was constructed by the Port of Seattle in 1944 to serve civilians of the region, after the U.S.
- Seattle–Tacoma International Airport handled 34,776,666 passengers last year.