Nonstop flight route between Cowley, Alberta, Canada and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from YYM to FSI:
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- About this route
- YYM Airport Information
- FSI Airport Information
- Facts about YYM
- Facts about FSI
- Map of Nearest Airports to YYM
- List of Nearest Airports to YYM
- Map of Furthest Airports from YYM
- List of Furthest Airports from YYM
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
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- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Cowley Airport (YYM), Cowley, Alberta, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,305 miles (or 2,101 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 Cowley 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: | YYM / CYYM |
Airport Name: | Cowley Airport |
Location: | Cowley, Alberta, Canada |
GPS Coordinates: | 49°38'11"N by 114°5'39"W |
Operator/Owner: | Alberta Soaring Council |
Airport Type: | Private |
Elevation: | 3876 feet (1,181 meters) |
# of Runways: | 2 |
View all routes: | Routes from YYM |
More Information: | YYM 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 Cowley Airport (YYM):
- The furthest airport from Cowley Airport (YYM) is Tôlanaro Airport (FTU), which is located 10,456 miles (16,828 kilometers) away in Tôlanaro, Madagascar.
- Cowley Airport (YYM) has 2 runways.
- The closest airport to Cowley Airport (YYM) is Pincher Creek Airport (WPC), which is located only 9 miles (15 kilometers) SSE of YYM.
Facts about Henry Post Army Airfield (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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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 Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.