Nonstop flight route between Fort Sill, Oklahoma, United States and Cornwall, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YCC:
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- About this route
- FSI Airport Information
- YCC Airport Information
- Facts about FSI
- Facts about YCC
- 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 YCC
- List of Nearest Airports to YCC
- Map of Furthest Airports from YCC
- List of Furthest Airports from YCC
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Cornwall Regional Airport (YCC), Cornwall, Ontario, Canada would travel a Great Circle distance of 1,447 miles (or 2,329 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 Cornwall Regional 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: | YCC / CYCC |
Airport Name: | Cornwall Regional Airport |
Location: | Cornwall, Ontario, Canada |
GPS Coordinates: | 45°5'34"N by 74°34'4"W |
Operator/Owner: | Cornwall Regional Airport Commission |
Airport Type: | Public |
Elevation: | 175 feet (53 meters) |
# of Runways: | 1 |
View all routes: | Routes from YCC |
More Information: | YCC Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- 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.
- 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.
Facts about Cornwall Regional Airport (YCC):
- Cornwall Regional Airport (YCC) currently has only 1 runway.
- The closest airport to Cornwall Regional Airport (YCC) is Massena International Airport (MSS), which is located only 17 miles (28 kilometers) SW of YCC.
- Because of Cornwall Regional Airport's relatively low elevation of 175 feet, planes can take off or land at Cornwall Regional 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 furthest airport from Cornwall Regional Airport (YCC) is Margaret River Airport (MGV), which is located 11,511 miles (18,525 kilometers) away in Margaret River, Western Australia, Australia.