Nonstop flight route between Fort Sill, Oklahoma, United States and Cotulla, Texas, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to COT:
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- About this route
- FSI Airport Information
- COT Airport Information
- Facts about FSI
- Facts about COT
- 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 COT
- List of Nearest Airports to COT
- Map of Furthest Airports from COT
- List of Furthest Airports from COT
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Cotulla–La Salle County Airport (COT), Cotulla, Texas, United States would travel a Great Circle distance of 431 miles (or 693 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 Cotulla–La Salle County 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: | COT / KCOT |
Airport Name: | Cotulla–La Salle County Airport |
Location: | Cotulla, Texas, United States |
GPS Coordinates: | 28°27'24"N by 99°13'5"W |
Area Served: | Cotulla, Texas |
Operator/Owner: | City of Cotulla/La Salle County |
Airport Type: | Public |
Elevation: | 474 feet (144 meters) |
# of Runways: | 1 |
View all routes: | Routes from COT |
More Information: | COT 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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 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.
Facts about Cotulla–La Salle County Airport (COT):
- The closest airport to Cotulla–La Salle County Airport (COT) is Garner Field (UVA), which is located 61 miles (98 kilometers) NNW of COT.
- Because of Cotulla–La Salle County Airport's relatively low elevation of 474 feet, planes can take off or land at Cotulla–La Salle County 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 furthest airport from Cotulla–La Salle County Airport (COT) is Sir Gaëtan Duval Airport (RRG), which is located 11,187 miles (18,003 kilometers) away in Rodrigues Island, Mauritius.
- Cotulla–La Salle County Airport (COT) currently has only 1 runway.