Nonstop flight route between Fort Sill, Oklahoma, United States and Mattoon/Charleston, Illinois, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to MTO:
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- About this route
- FSI Airport Information
- MTO Airport Information
- Facts about FSI
- Facts about MTO
- 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 MTO
- List of Nearest Airports to MTO
- Map of Furthest Airports from MTO
- List of Furthest Airports from MTO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Coles County Memorial Airport (MTO), Mattoon/Charleston, Illinois, United States would travel a Great Circle distance of 650 miles (or 1,045 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 Coles County Memorial 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: | MTO / KMTO |
Airport Name: | Coles County Memorial Airport |
Location: | Mattoon/Charleston, Illinois, United States |
GPS Coordinates: | 39°28'41"N by 88°16'45"W |
Area Served: | Mattoon/Charleston, Illinois |
Operator/Owner: | Coles County Airport Authority |
Airport Type: | Public |
Elevation: | 722 feet (220 meters) |
# of Runways: | 3 |
View all routes: | Routes from MTO |
More Information: | MTO Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
Facts about Coles County Memorial Airport (MTO):
- The airport covers 1,225 acres at an elevation of 722 feet.
- Because of Coles County Memorial Airport's relatively low elevation of 722 feet, planes can take off or land at Coles County Memorial 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.
- The closest airport to Coles County Memorial Airport (MTO) is University of Illinois Willard Airport (CMI), which is located 39 miles (62 kilometers) N of MTO.
- Airline flights started around 1955 and ended in 2000-2001.
- Coles County Memorial Airport (MTO) has 3 runways.
- The furthest airport from Coles County Memorial Airport (MTO) is Margaret River Airport (MGV), which is located 11,091 miles (17,849 kilometers) away in Margaret River, Western Australia, Australia.