Nonstop flight route between Northern Quebec, Canada and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from YAR to FSI:
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- About this route
- YAR Airport Information
- FSI Airport Information
- Facts about YAR
- Facts about FSI
- Map of Nearest Airports to YAR
- List of Nearest Airports to YAR
- Map of Furthest Airports from YAR
- List of Furthest Airports from YAR
- 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 La Grande-3 Airport (YAR), Northern Quebec, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,695 miles (or 2,728 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 La Grande-3 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: | YAR / CYAD |
Airport Name: | La Grande-3 Airport |
Location: | Northern Quebec, Canada |
GPS Coordinates: | 53°34'18"N by 76°11'47"W |
Operator/Owner: | Hydro-Québec |
Airport Type: | Private |
Elevation: | 775 feet (236 meters) |
# of Runways: | 1 |
View all routes: | Routes from YAR |
More Information: | YAR 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 La Grande-3 Airport (YAR):
- La Grande-3 Airport (YAR) currently has only 1 runway.
- Because of La Grande-3 Airport's relatively low elevation of 775 feet, planes can take off or land at La Grande-3 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 La Grande-3 Airport (YAR) is La Grande Rivière Airport (YGL), which is located 62 miles (100 kilometers) W of YAR.
- The furthest airport from La Grande-3 Airport (YAR) is Albany Airport (ALH), which is located 10,981 miles (17,672 kilometers) away in Albany, Western Australia, Australia.
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- Post Field served as a base for flight training for the Air Service.