Nonstop flight route between Fort Sill, Oklahoma, United States and Dehradun, Uttarakhand, India:
Departure Airport:

Arrival Airport:

Distance from FSI to DED:
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- About this route
- FSI Airport Information
- DED Airport Information
- Facts about FSI
- Facts about DED
- 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 DED
- List of Nearest Airports to DED
- Map of Furthest Airports from DED
- List of Furthest Airports from DED
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Jolly Grant Airport. (DED), Dehradun, Uttarakhand, India would travel a Great Circle distance of 7,951 miles (or 12,796 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 large distance between Henry Post Army Airfield and Jolly Grant Airport., the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Jolly Grant Airport.. You'll see that it will travel the same route of the red line on this map!
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: | DED / VIDN |
Airport Names: |
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Location: | Dehradun, Uttarakhand, India |
GPS Coordinates: | 30°11'22"N by 78°10'49"E |
Operator/Owner: | Airports Authority of India |
Airport Type: | Public |
Elevation: | 1831 feet (558 meters) |
# of Runways: | 1 |
View all routes: | Routes from DED |
More Information: | DED Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- 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.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
Facts about Jolly Grant Airport. (DED):
- In addition to being known as "Jolly Grant Airport.", other names for DED include "Dehradun Airport.", "जॉली ग्रांट हवाई अड्डे" and "देहरादून हवाई अड्डे.".
- The closest airport to Jolly Grant Airport. (DED) is Chandigarh Airport (IXC), which is located 89 miles (144 kilometers) WNW of DED.
- The furthest airport from Jolly Grant Airport. (DED) is Mataveri International Airport (IPC), which is located 11,931 miles (19,201 kilometers) away in Easter Island, Chile.
- Jolly Grant Airport. (DED) currently has only 1 runway.
- The airport is located about 22 km southeast of the city of Dehradun.