Nonstop flight route between Dease Lake, British Columbia, Canada and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from YDL to FSI:
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- About this route
- YDL Airport Information
- FSI Airport Information
- Facts about YDL
- Facts about FSI
- Map of Nearest Airports to YDL
- List of Nearest Airports to YDL
- Map of Furthest Airports from YDL
- List of Furthest Airports from YDL
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Dease Lake Airport (YDL), Dease Lake, British Columbia, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 2,188 miles (or 3,521 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 Dease Lake Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | YDL / CYDL |
Airport Name: | Dease Lake Airport |
Location: | Dease Lake, British Columbia, Canada |
GPS Coordinates: | 58°25'19"N by 130°1'53"W |
Operator/Owner: | Stikine Airport Society |
Airport Type: | Public |
Elevation: | 2634 feet (803 meters) |
# of Runways: | 1 |
View all routes: | Routes from YDL |
More Information: | YDL Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Facts about Dease Lake Airport (YDL):
- The closest airport to Dease Lake Airport (YDL) is Telegraph Creek Airport (YTX), which is located 53 miles (85 kilometers) SW of YDL.
- Dease Lake Airport (YDL) currently has only 1 runway.
- The furthest airport from Dease Lake Airport (YDL) is Port Alfred Airport (AFD), which is located 10,414 miles (16,760 kilometers) away in Port Alfred, South Africa.
Facts about Henry Post Army Airfield (FSI):
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- The furthest airport from Henry Post Army Airfield (FSI) is Sir Gaëtan Duval Airport (RRG), which is located 10,920 miles (17,575 kilometers) away in Rodrigues Island, Mauritius.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- The closest airport to Henry Post Army Airfield (FSI) is Lawton–Fort Sill Regional Airport (LAW), which is located only 6 miles (9 kilometers) S of FSI.