Nonstop flight route between Alert, Nunavut, Canada and Spearfish, South Dakota, United States:
Departure Airport:

Arrival Airport:

Distance from YLT to SPF:
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- About this route
- YLT Airport Information
- SPF Airport Information
- Facts about YLT
- Facts about SPF
- 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 SPF
- List of Nearest Airports to SPF
- Map of Furthest Airports from SPF
- List of Furthest Airports from SPF
About this route:
A direct, nonstop flight between Alert Airport (YLT), Alert, Nunavut, Canada and Black Hills Airport (SPF), Spearfish, South Dakota, United States would travel a Great Circle distance of 2,775 miles (or 4,465 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 Black Hills 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 Black Hills 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: | SPF / KSPF |
Airport Names: |
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Location: | Spearfish, South Dakota, United States |
GPS Coordinates: | 44°28'49"N by 103°46'59"W |
Operator/Owner: | Lawrence County Airport Board |
Airport Type: | Public |
Elevation: | 3931 feet (1,198 meters) |
# of Runways: | 4 |
View all routes: | Routes from SPF |
More Information: | SPF Maps & Info |
Facts about Alert Airport (YLT):
- 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.
- 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.
- The closest airport to Alert Airport (YLT) is Eureka Aerodrome (YEU), which is located 299 miles (481 kilometers) WSW of YLT.
- The airport's fire and rescue operations are supported by a 2012 KME/Fort Garry Fire Truck ARFF.
- Alert Airport (YLT) currently has only 1 runway.
- A weather station was established on the site in 1950, and in 1957 construction began on the military facilities which are still in use to this day.
- There have been two crashes involving fatalities at the airfield since it was established.
Facts about Black Hills Airport (SPF):
- In addition to being known as "Black Hills Airport", another name for SPF is "Clyde Ice Field".
- Black Hills Airport (SPF) has 4 runways.
- The furthest airport from Black Hills Airport (SPF) is Sir Gaëtan Duval Airport (RRG), which is located 10,576 miles (17,020 kilometers) away in Rodrigues Island, Mauritius.
- The closest airport to Black Hills Airport (SPF) is Ellsworth Air Force Base (RCA), which is located 42 miles (67 kilometers) ESE of SPF.