Nonstop flight route between Fort Sill, Oklahoma, United States and Riverside/Rubidoux, California, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to RIR:
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- About this route
- FSI Airport Information
- RIR Airport Information
- Facts about FSI
- Facts about RIR
- 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 RIR
- List of Nearest Airports to RIR
- Map of Furthest Airports from RIR
- List of Furthest Airports from RIR
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Flabob Airport (RIR), Riverside/Rubidoux, California, United States would travel a Great Circle distance of 1,084 miles (or 1,745 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 Flabob 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: | RIR / KRIR |
Airport Name: | Flabob Airport |
Location: | Riverside/Rubidoux, California, United States |
GPS Coordinates: | 33°59'20"N by 117°24'35"W |
Area Served: | Riverside, California |
Operator/Owner: | Flabob Inc. 4130 Mennes Ave, Riverside, CA 92509 |
Airport Type: | Public |
Elevation: | 764 feet (233 meters) |
# of Runways: | 1 |
View all routes: | Routes from RIR |
More Information: | RIR 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.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
Facts about Flabob Airport (RIR):
- Flabob airport is home to Experimental Aircraft Association chapter #1, launched by Ray Stits and since joined by over 1,000 more EAA chapters worldwide.
- Because of Flabob Airport's relatively low elevation of 764 feet, planes can take off or land at Flabob 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.
- Flabob Airport (RIR) currently has only 1 runway.
- The closest airport to Flabob Airport (RIR) is Riverside Municipal Airport (RAL), which is located only 3 miles (5 kilometers) SW of RIR.
- The furthest airport from Flabob Airport (RIR) is Pierrefonds Airport (ZSE), which is located 11,459 miles (18,441 kilometers) away in Saint-Pierre, Réunion.