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

Arrival Airport:

Distance from YQL to FSI:
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- About this route
- YQL Airport Information
- FSI Airport Information
- Facts about YQL
- Facts about FSI
- Map of Nearest Airports to YQL
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- Map of Furthest Airports from YQL
- List of Furthest Airports from YQL
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About this route:
A direct, nonstop flight between Lethbridge Airport (YQL), Lethbridge, Alberta, Canada and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,266 miles (or 2,038 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 Lethbridge 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: | YQL / CYQL |
Airport Name: | Lethbridge Airport |
Location: | Lethbridge, Alberta, Canada |
GPS Coordinates: | 49°37'49"N by 112°47'58"W |
Area Served: | Lethbridge |
Operator/Owner: | Lethbridge County |
Airport Type: | Public |
Elevation: | 3048 feet (929 meters) |
# of Runways: | 2 |
View all routes: | Routes from YQL |
More Information: | YQL 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 Lethbridge Airport (YQL):
- Originally known as Kenyon Field, this aerodrome began passenger services in October 1938, but officially opened in June 1939.
- Between 50 and 60 percent of typical annual aircraft movements are flight training and scheduled air carrier services.
- From 1939–1948, Lethbridge operated as Western Canada's primary airline hub.
- The furthest airport from Lethbridge Airport (YQL) is Tôlanaro Airport (FTU), which is located 10,420 miles (16,770 kilometers) away in Tôlanaro, Madagascar.
- By 1962, passenger flights operated by Trans-Canada Air Lines had become more regional in nature.
- Lethbridge Airport (YQL) has 2 runways.
- The closest airport to Lethbridge Airport (YQL) is Pincher Creek Airport (WPC), which is located 54 miles (87 kilometers) W of YQL.
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- 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.