Nonstop flight route between Fort Sill, Oklahoma, United States and Gillam, Manitoba, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YGX:
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- About this route
- FSI Airport Information
- YGX Airport Information
- Facts about FSI
- Facts about YGX
- 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 YGX
- List of Nearest Airports to YGX
- Map of Furthest Airports from YGX
- List of Furthest Airports from YGX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Gillam Airport (YGX), Gillam, Manitoba, Canada would travel a Great Circle distance of 1,510 miles (or 2,430 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 Henry Post Army Airfield and Gillam Airport, the route shown on this map most likely still appears to be a straight line.
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: | YGX / CYGX |
Airport Name: | Gillam Airport |
Location: | Gillam, Manitoba, Canada |
GPS Coordinates: | 56°21'28"N by 94°42'38"W |
Operator/Owner: | Town of Gillam |
Airport Type: | Public |
Elevation: | 476 feet (145 meters) |
# of Runways: | 1 |
View all routes: | Routes from YGX |
More Information: | YGX Maps & Info |
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.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
Facts about Gillam Airport (YGX):
- The closest airport to Gillam Airport (YGX) is Ilford Airport (ILF), which is located 41 miles (66 kilometers) WSW of YGX.
- Gillam Airport (YGX) currently has only 1 runway.
- The furthest airport from Gillam Airport (YGX) is Margaret River Airport (MGV), which is located 10,344 miles (16,648 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Gillam Airport's relatively low elevation of 476 feet, planes can take off or land at Gillam 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.