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

Arrival Airport:

Distance from EGI to FSI:
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- About this route
- EGI Airport Information
- FSI Airport Information
- Facts about EGI
- Facts about FSI
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About this route:
A direct, nonstop flight between Duke FieldEglin Air Force Auxiliary Field #3 (EGI), Crestview, Florida, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, 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 Duke FieldEglin Air Force Auxiliary Field #3 and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival 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 |
Facts about Duke FieldEglin Air Force Auxiliary Field #3 (EGI):
- Duke Field was one of the first auxiliary fields built on the Eglin Field / Eglin AFB complex.
- 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.
- 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.
- In the 1950s, Duke Field became home to the 3205th Drone Group, which operated radio remote-controlled B-17s and F-80s that were used for gunnery and missile practice over the Gulf of Mexico.
- In addition to being known as "Duke FieldEglin Air Force Auxiliary Field #3", another name for EGI is "Duke Field".
- 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.
Facts about Henry Post Army Airfield (FSI):
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- 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 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.