Nonstop flight route between Riverton, Wyoming, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from RIW to FSI:
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- About this route
- RIW Airport Information
- FSI Airport Information
- Facts about RIW
- Facts about FSI
- Map of Nearest Airports to RIW
- List of Nearest Airports to RIW
- Map of Furthest Airports from RIW
- List of Furthest Airports from RIW
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Riverton Regional Airport (RIW), Riverton, Wyoming, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 793 miles (or 1,276 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 Riverton Regional Airport 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: | RIW / KRIW |
Airport Name: | Riverton Regional Airport |
Location: | Riverton, Wyoming, United States |
GPS Coordinates: | 43°3'51"N by 108°27'34"W |
Area Served: | Riverton, Wyoming |
Operator/Owner: | City of Riverton |
Airport Type: | Public |
Elevation: | 5528 feet (1,685 meters) |
# of Runways: | 2 |
View all routes: | Routes from RIW |
More Information: | RIW 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 Riverton Regional Airport (RIW):
- Riverton Regional Airport (RIW) has 2 runways.
- The closest airport to Riverton Regional Airport (RIW) is Hunt Field (LND), which is located 22 miles (35 kilometers) SW of RIW.
- Because of Riverton Regional Airport's high elevation of 5,528 feet, planes must typically fly at a faster airspeed in order to takeoff or land at RIW. Combined with a high temperature, this could make RIW a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Riverton Regional Airport (RIW) is Sir Gaëtan Duval Airport (RRG), which is located 10,758 miles (17,313 kilometers) away in Rodrigues Island, Mauritius.
Facts about Henry Post Army Airfield (FSI):
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.