Nonstop flight route between Fort Sill, Oklahoma, United States and Siloam Springs, Arkansas, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to SLG:
Share this route:
Jump to:
- About this route
- FSI Airport Information
- SLG Airport Information
- Facts about FSI
- Facts about SLG
- 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 SLG
- List of Nearest Airports to SLG
- Map of Furthest Airports from SLG
- List of Furthest Airports from SLG
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Smith Field (SLG), Siloam Springs, Arkansas, United States would travel a Great Circle distance of 245 miles (or 394 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 Smith Field, 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: | SLG / KSLG |
Airport Name: | Smith Field |
Location: | Siloam Springs, Arkansas, United States |
GPS Coordinates: | 36°11'30"N by 94°29'23"W |
Area Served: | Siloam Springs, Arkansas |
Operator/Owner: | City of Siloam Springs |
Airport Type: | Public |
Elevation: | 1191 feet (363 meters) |
# of Runways: | 1 |
View all routes: | Routes from SLG |
More Information: | SLG Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- 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 Smith Field (SLG):
- Smith Field (SLG) currently has only 1 runway.
- The furthest airport from Smith Field (SLG) is Margaret River Airport (MGV), which is located 10,763 miles (17,321 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Smith Field (SLG) is Northwest Arkansas Regional Airport (XNA), which is located only 12 miles (19 kilometers) ENE of SLG.