Nonstop flight route between Fort Sill, Oklahoma, United States and Merrill, Wisconsin, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to RRL:
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- About this route
- FSI Airport Information
- RRL Airport Information
- Facts about FSI
- Facts about RRL
- 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 RRL
- List of Nearest Airports to RRL
- Map of Furthest Airports from RRL
- List of Furthest Airports from RRL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Merrill Municipal Airport (RRL), Merrill, Wisconsin, United States would travel a Great Circle distance of 861 miles (or 1,386 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 Merrill 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: | RRL / KRRL |
Airport Name: | Merrill Municipal Airport |
Location: | Merrill, Wisconsin, United States |
GPS Coordinates: | 45°11'56"N by 89°42'46"W |
Area Served: | Merrill, Wisconsin |
Operator/Owner: | City of Merrill |
Airport Type: | Public |
Elevation: | 1318 feet (402 meters) |
# of Runways: | 2 |
View all routes: | Routes from RRL |
More Information: | RRL Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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 Merrill Municipal Airport (RRL):
- Merrill Municipal Airport (RRL) has 2 runways.
- The closest airport to Merrill Municipal Airport (RRL) is Wausau Downtown Airport (AUW), which is located only 19 miles (31 kilometers) SSE of RRL.
- The furthest airport from Merrill Municipal Airport (RRL) is Margaret River Airport (MGV), which is located 10,912 miles (17,561 kilometers) away in Margaret River, Western Australia, Australia.