Nonstop flight route between Diomede, Alaska, United States and Fort Smith, Northwest Territories, Canada:
Departure Airport:

Arrival Airport:

Distance from DIO to YSM:
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- About this route
- DIO Airport Information
- YSM Airport Information
- Facts about DIO
- Facts about YSM
- Map of Nearest Airports to DIO
- List of Nearest Airports to DIO
- Map of Furthest Airports from DIO
- List of Furthest Airports from DIO
- Map of Nearest Airports to YSM
- List of Nearest Airports to YSM
- Map of Furthest Airports from YSM
- List of Furthest Airports from YSM
About this route:
A direct, nonstop flight between Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States and Fort Smith Airport (YSM), Fort Smith, Northwest Territories, Canada would travel a Great Circle distance of 1,771 miles (or 2,850 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 relatively short distance between Diomede Heliport (FAA: DM2) and Fort Smith Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | DIO / |
Airport Name: | Diomede Heliport (FAA: DM2) |
Location: | Diomede, Alaska, United States |
GPS Coordinates: | 65°45'29"N by 168°57'6"W |
Elevation: | 0 feet (0 meters) |
View all routes: | Routes from DIO |
More Information: | DIO Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | YSM / CYSM |
Airport Name: | Fort Smith Airport |
Location: | Fort Smith, Northwest Territories, Canada |
GPS Coordinates: | 60°1'13"N by 111°57'42"W |
Operator/Owner: | Government of the Northwest Territories |
Airport Type: | Public |
Elevation: | 673 feet (205 meters) |
# of Runways: | 2 |
View all routes: | Routes from YSM |
More Information: | YSM Maps & Info |
Facts about Diomede Heliport (FAA: DM2) (DIO):
- The island's only school, and likely the most isolated school in the United States, the Diomede School has grades from Pre-K through 12 and approximately 40 students and 5 teachers.
- Because of Diomede Heliport (FAA: DM2)'s relatively low elevation of 0 feet, planes can take off or land at Diomede Heliport (FAA: DM2) 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.
- At the beginning of the Cold War in the late 1940s Big Diomede became a Russian military base and all its native residents were removed to mainland Russia.
- The closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of DIO.
- Despite being separated by the new border after the Alaska purchase in 1867, Big Diomede had been home to families now living on Little Diomede and the people living on the American side of the border were very close relatives to those living on the Russian side.
- The current location of the city, which is believed to be at least 3,000 years old by some archaeologists, was originally a spring hunting campsite and the early explorers from the west found the Iñupiat at Diomede had an advanced culture including their elaborate whale hunting ceremonies.
- The school year 1953–1954 in Little Diomede Island was adapted to better serve the local needs.
- The furthest airport from Diomede Heliport (FAA: DM2) (DIO) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,411 miles (16,755 kilometers) away in Villa Las Estrellas, Antarctica.
- The median income for a household in the city was $23,750, and the median income for a family was $24,583.
Facts about Fort Smith Airport (YSM):
- The closest airport to Fort Smith Airport (YSM) is Fort Chipewyan Airport (YPY), which is located 92 miles (147 kilometers) SSE of YSM.
- Because of Fort Smith Airport's relatively low elevation of 673 feet, planes can take off or land at Fort Smith 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.
- Fort Smith Airport (YSM) has 2 runways.
- The furthest airport from Fort Smith Airport (YSM) is Port Alfred Airport (AFD), which is located 9,839 miles (15,834 kilometers) away in Port Alfred, South Africa.