Nonstop flight route between Fort Sill, Oklahoma, United States and Old Crow, Yukon, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YOC:
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- About this route
- FSI Airport Information
- YOC Airport Information
- Facts about FSI
- Facts about YOC
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to YOC
- List of Nearest Airports to YOC
- Map of Furthest Airports from YOC
- List of Furthest Airports from YOC
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Old Crow Airport (YOC), Old Crow, Yukon, Canada would travel a Great Circle distance of 2,796 miles (or 4,499 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 Henry Post Army Airfield and Old Crow 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 Henry Post Army Airfield and Old Crow Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | YOC / CYOC |
Airport Name: | Old Crow Airport |
Location: | Old Crow, Yukon, Canada |
GPS Coordinates: | 67°34'11"N by 139°50'24"W |
Operator/Owner: | Government of Yukon |
Airport Type: | Public |
Elevation: | 821 feet (250 meters) |
# of Runways: | 1 |
View all routes: | Routes from YOC |
More Information: | YOC Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
Facts about Old Crow Airport (YOC):
- Because of Old Crow Airport's relatively low elevation of 821 feet, planes can take off or land at Old Crow 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 Old Crow Airport (YOC) is Chalkyitsik Airport (CIK), which is located 123 miles (198 kilometers) WSW of YOC.
- Old Crow Airport (YOC) currently has only 1 runway.
- The furthest airport from Old Crow Airport (YOC) is Port Elizabeth International Airport (PLZ), which is located 10,045 miles (16,165 kilometers) away in Port Elizabeth, South Africa.