Nonstop flight route between Fort Sill, Oklahoma, United States and Greeneville, Tennessee, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to GCY:
Share this route:
Jump to:
- About this route
- FSI Airport Information
- GCY Airport Information
- Facts about FSI
- Facts about GCY
- 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 GCY
- List of Nearest Airports to GCY
- Map of Furthest Airports from GCY
- List of Furthest Airports from GCY
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Greeneville-Greene County Municipal Airport (GCY), Greeneville, Tennessee, United States would travel a Great Circle distance of 883 miles (or 1,421 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 Greeneville-Greene County Municipal 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: | GCY / KGCY |
Airport Name: | Greeneville-Greene County Municipal Airport |
Location: | Greeneville, Tennessee, United States |
GPS Coordinates: | 36°11'35"N by 82°48'53"W |
Operator/Owner: | Town of Greeneville & Greene County |
Airport Type: | Public |
Elevation: | 1608 feet (490 meters) |
# of Runways: | 1 |
View all routes: | Routes from GCY |
More Information: | GCY Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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 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.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
Facts about Greeneville-Greene County Municipal Airport (GCY):
- The furthest airport from Greeneville-Greene County Municipal Airport (GCY) is Margaret River Airport (MGV), which is located 11,413 miles (18,368 kilometers) away in Margaret River, Western Australia, Australia.
- Greeneville-Greene County Municipal Airport (GCY) currently has only 1 runway.
- The closest airport to Greeneville-Greene County Municipal Airport (GCY) is Tri-Cities Regional Airport (TRI), which is located 30 miles (48 kilometers) NE of GCY.