Nonstop flight route between Fort Sill, Oklahoma, United States and Swift Current, Saskatchewan, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YYN:
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- About this route
- FSI Airport Information
- YYN Airport Information
- Facts about FSI
- Facts about YYN
- 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 YYN
- List of Nearest Airports to YYN
- Map of Furthest Airports from YYN
- List of Furthest Airports from YYN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Swift Current Airport (YYN), Swift Current, Saskatchewan, Canada would travel a Great Circle distance of 1,178 miles (or 1,895 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 Swift Current 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: | YYN / CYYN |
Airport Name: | Swift Current Airport |
Location: | Swift Current, Saskatchewan, Canada |
GPS Coordinates: | 50°17'32"N by 107°41'26"W |
Operator/Owner: | City of Swift Current |
Airport Type: | Public |
Elevation: | 2681 feet (817 meters) |
# of Runways: | 2 |
View all routes: | Routes from YYN |
More Information: | YYN Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
Facts about Swift Current Airport (YYN):
- The furthest airport from Swift Current Airport (YYN) is Sir Gaëtan Duval Airport (RRG), which is located 10,271 miles (16,529 kilometers) away in Rodrigues Island, Mauritius.
- The closest airport to Swift Current Airport (YYN) is CFB Moose Jaw (YMJ), which is located 94 miles (151 kilometers) E of YYN.
- Swift Current Airport (YYN) has 2 runways.