Nonstop flight route between Fort Sill, Oklahoma, United States and Poughkeepsie, New York, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to POU:
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- About this route
- FSI Airport Information
- POU Airport Information
- Facts about FSI
- Facts about POU
- 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 POU
- List of Nearest Airports to POU
- Map of Furthest Airports from POU
- List of Furthest Airports from POU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Dutchess County Airport (POU), Poughkeepsie, New York, United States would travel a Great Circle distance of 1,411 miles (or 2,271 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 Dutchess County 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: | POU / KPOU |
Airport Name: | Dutchess County Airport |
Location: | Poughkeepsie, New York, United States |
GPS Coordinates: | 41°37'36"N by 73°53'3"W |
Area Served: | Poughkeepsie, New York |
Operator/Owner: | Dutchess County |
Airport Type: | Public |
Elevation: | 165 feet (50 meters) |
# of Runways: | 3 |
View all routes: | Routes from POU |
More Information: | POU Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
Facts about Dutchess County Airport (POU):
- The closest airport to Dutchess County Airport (POU) is Stewart International Airport (SWF), which is located only 14 miles (23 kilometers) SW of POU.
- Dutchess County Airport (POU) has 3 runways.
- Dutchess County Airport covers an area of 640 acres which contains three runways, two of which are paved.
- The furthest airport from Dutchess County Airport (POU) is Margaret River Airport (MGV), which is located 11,714 miles (18,852 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Dutchess County Airport's relatively low elevation of 165 feet, planes can take off or land at Dutchess County 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.
- Dutchess County Airport was built by the United States Department of Commerce in the 1930s and was used for pilot training during World War II by the US Army Air Forces.
- There is currently only one flight school that operates at the airport, United Aviation Academy, located in the main terminal.