Nonstop flight route between Fort Sill, Oklahoma, United States and International Falls, Minnesota, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to INL:
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- About this route
- FSI Airport Information
- INL Airport Information
- Facts about FSI
- Facts about INL
- 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 INL
- List of Nearest Airports to INL
- Map of Furthest Airports from INL
- List of Furthest Airports from INL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Falls International Airport (INL), International Falls, Minnesota, United States would travel a Great Circle distance of 995 miles (or 1,601 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 Falls International 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: | INL / KINL |
Airport Name: | Falls International Airport |
Location: | International Falls, Minnesota, United States |
GPS Coordinates: | 48°33'56"N by 93°24'7"W |
Area Served: | International Falls, Minnesota |
Operator/Owner: | City of International Falls |
Airport Type: | Public |
Elevation: | 1185 feet (361 meters) |
# of Runways: | 2 |
View all routes: | Routes from INL |
More Information: | INL Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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 Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
Facts about Falls International Airport (INL):
- Falls International Airport (INL) has 2 runways.
- The furthest airport from Falls International Airport (INL) is Margaret River Airport (MGV), which is located 10,660 miles (17,156 kilometers) away in Margaret River, Western Australia, Australia.
- As per Federal Aviation Administration records, the airport had 16,590 passenger boardings in calendar year 2008, 15,861 enplanements in 2009, and 14,051 in 2010.
- The closest airport to Falls International Airport (INL) is Fort Frances Municipal Airport (YAG), which is located only 6 miles (10 kilometers) NNW of INL.