Nonstop flight route between Fort Sill, Oklahoma, United States and Clintonville, Wisconsin, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to CLI:
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- About this route
- FSI Airport Information
- CLI Airport Information
- Facts about FSI
- Facts about CLI
- 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 CLI
- List of Nearest Airports to CLI
- Map of Furthest Airports from CLI
- List of Furthest Airports from CLI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Clintonville Municipal Airport (CLI), Clintonville, Wisconsin, United States would travel a Great Circle distance of 858 miles (or 1,381 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 Clintonville Municipal 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: | CLI / KCLI |
Airport Name: | Clintonville Municipal Airport |
Location: | Clintonville, Wisconsin, United States |
GPS Coordinates: | 44°36'47"N by 88°43'50"W |
Area Served: | Clintonville, Wisconsin |
Operator/Owner: | City of Clintonville |
Airport Type: | Public |
Elevation: | 822 feet (251 meters) |
# of Runways: | 3 |
View all routes: | Routes from CLI |
More Information: | CLI Maps & Info |
Facts about Henry Post Army Airfield (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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
Facts about Clintonville Municipal Airport (CLI):
- The CLINTONVILLE non-directional beacon, 209 kHz, is located on field.
- The airport was the birthplace of Wisconsin Central Airlines which became North Central Airlines.
- The furthest airport from Clintonville Municipal Airport (CLI) is Margaret River Airport (MGV), which is located 10,972 miles (17,657 kilometers) away in Margaret River, Western Australia, Australia.
- Clintonville Municipal Airport covers an area of 533 acres at an elevation of 822 feet above mean sea level.
- The closest airport to Clintonville Municipal Airport (CLI) is Outagamie County Regional Airport (ATW), which is located 27 miles (43 kilometers) SSE of CLI.
- Clintonville Municipal Airport (CLI) has 3 runways.
- Because of Clintonville Municipal Airport's relatively low elevation of 822 feet, planes can take off or land at Clintonville Municipal 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.