Nonstop flight route between Fort Sill, Oklahoma, United States and Crestview, Florida, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to EGI:
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- About this route
- FSI Airport Information
- EGI Airport Information
- Facts about FSI
- Facts about EGI
- 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 EGI
- List of Nearest Airports to EGI
- Map of Furthest Airports from EGI
- List of Furthest Airports from EGI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Duke FieldEglin Air Force Auxiliary Field #3 (EGI), Crestview, Florida, United States would travel a Great Circle distance of 744 miles (or 1,197 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 Duke FieldEglin Air Force Auxiliary Field #3, 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: | EGI / KEGI |
Airport Names: |
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Location: | Crestview, Florida, United States |
GPS Coordinates: | 30°39'1"N by 86°31'22"W |
View all routes: | Routes from EGI |
More Information: | EGI 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.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
Facts about Duke FieldEglin Air Force Auxiliary Field #3 (EGI):
- Six original Raiders were present at Duke Field, on Saturday 31 May 2008 for the culmination of their annual reunion.
- The furthest airport from Duke FieldEglin Air Force Auxiliary Field #3 (EGI) is Shark Bay Airport (MJK), which is located 11,172 miles (17,980 kilometers) away in Monkey Mia, Western Australia, Australia.
- In 1980, Duke Field was also one of the fields used in training for Operation Credible Sport, an initiative to prepare for a second rescue attempt of American hostages held in Iran using C-130 aircraft modified with multiple rocket engines for extremely short landings and takeoffs.
- The closest airport to Duke FieldEglin Air Force Auxiliary Field #3 (EGI) is Bob Sikes Airport (CEW), which is located only 9 miles (14 kilometers) N of EGI.
- Between August and October 1970, during the Vietnam War, the Joint Contingency Task Group used AFROTC facilities at Duke Field to house US Army Special Forces troops involved in Operation Ivory Coast, a mission to rescue prisoners of war at Sơn Tây, North Vietnam.
- A large hump-backed steel hangar, the "Butler Hangar", 160 feet X 130 feet, transported from Trinidad, was erected at Auxiliary Field 3 between 1 April and ~10 July 1950, by personnel of Company 'C', 806th Aviation Engineering Battalion, under Captain Samuel M.
- In addition to being known as "Duke FieldEglin Air Force Auxiliary Field #3", another name for EGI is "Duke Field".