Nonstop flight route between Fort Sill, Oklahoma, United States and Lexington, Kentucky, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to LEX:
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- About this route
- FSI Airport Information
- LEX Airport Information
- Facts about FSI
- Facts about LEX
- 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 LEX
- List of Nearest Airports to LEX
- Map of Furthest Airports from LEX
- List of Furthest Airports from LEX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Blue Grass Airport (LEX), Lexington, Kentucky, United States would travel a Great Circle distance of 802 miles (or 1,290 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 Blue Grass 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: | LEX / KLEX |
Airport Name: | Blue Grass Airport |
Location: | Lexington, Kentucky, United States |
GPS Coordinates: | 38°2'11"N by 84°36'20"W |
Area Served: | Lexington, Kentucky |
Operator/Owner: | Lexington-Fayette Urban County Airport Board |
Airport Type: | Public |
Elevation: | 979 feet (298 meters) |
# of Runways: | 2 |
View all routes: | Routes from LEX |
More Information: | LEX Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- 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.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
Facts about Blue Grass Airport (LEX):
- The furthest airport from Blue Grass Airport (LEX) is Margaret River Airport (MGV), which is located 11,302 miles (18,188 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Blue Grass Airport (LEX) is Capital City Airport (FFT), which is located only 19 miles (31 kilometers) WNW of LEX.
- Blue Grass Airport (LEX) has 2 runways.
- Because of Blue Grass Airport's relatively low elevation of 979 feet, planes can take off or land at Blue Grass 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.
- Blue Grass Airport handled 1,104,354 passengers last year.