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
- List of Nearest Airports to YQL
- Map of Furthest Airports from YQL
- List of Furthest Airports from YQL
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
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):
- 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.
- Lethbridge County assumed ownership of the airport on 1 January 1997, and it was subsequently named the Lethbridge County Airport.
- The furthest airport from Lethbridge Airport (YQL) is Tôlanaro Airport (FTU), which is located 10,420 miles (16,770 kilometers) away in Tôlanaro, Madagascar.
- The airport is a Canadian Air Transport Security Authority Designated Aerodrome, thus providing full passenger screening.
Facts about Henry Post Army Airfield (FSI):
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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 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.
- 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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.