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

Arrival Airport:

Distance from FSI to OSH:
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- About this route
- FSI Airport Information
- OSH Airport Information
- Facts about FSI
- Facts about OSH
- 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 OSH
- List of Nearest Airports to OSH
- Map of Furthest Airports from OSH
- List of Furthest Airports from OSH
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Wittman Regional Airport (OSH), Oshkosh, Wisconsin, United States would travel a Great Circle distance of 831 miles (or 1,338 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 Wittman Regional 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: | OSH / KOSH |
Airport Name: | Wittman Regional Airport |
Location: | Oshkosh, Wisconsin, United States |
GPS Coordinates: | 43°59'3"N by 88°33'24"W |
Area Served: | Oshkosh, Wisconsin |
Airport Type: | Public |
Elevation: | 808 feet (246 meters) |
# of Runways: | 4 |
View all routes: | Routes from OSH |
More Information: | OSH Maps & Info |
Facts about Henry Post Army Airfield (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.
- 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.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- 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.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
Facts about Wittman Regional Airport (OSH):
- Because of Wittman Regional Airport's relatively low elevation of 808 feet, planes can take off or land at Wittman Regional 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.
- The furthest airport from Wittman Regional Airport (OSH) is Margaret River Airport (MGV), which is located 10,996 miles (17,696 kilometers) away in Margaret River, Western Australia, Australia.
- Wittman Regional Airport (OSH) has 4 runways.
- The airport has been served by commercial airlines in the past.
- The closest airport to Wittman Regional Airport (OSH) is Fond du Lac County Airport (FLD), which is located only 15 miles (24 kilometers) SSE of OSH.