Nonstop flight route between Fort Sill, Oklahoma, United States and Umiat, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to UMT:
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- About this route
- FSI Airport Information
- UMT Airport Information
- Facts about FSI
- Facts about UMT
- 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 UMT
- List of Nearest Airports to UMT
- Map of Furthest Airports from UMT
- List of Furthest Airports from UMT
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Umiat Airport (UMT), Umiat, Alaska, United States would travel a Great Circle distance of 3,129 miles (or 5,036 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 large distance between Henry Post Army Airfield and Umiat Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Umiat Airport. You'll see that it will travel the same route of the red line on this map!
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: | UMT / PAUM |
Airport Name: | Umiat Airport |
Location: | Umiat, Alaska, United States |
GPS Coordinates: | 69°22'15"N by 152°8'5"W |
Area Served: | Umiat, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Northern Region |
Airport Type: | Public |
Elevation: | 267 feet (81 meters) |
# of Runways: | 1 |
View all routes: | Routes from UMT |
More Information: | UMT 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.
- Post Field served as a base for flight training for the Air Service.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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 Umiat Airport (UMT):
- The closest airport to Umiat Airport (UMT) is Nuiqsut Airport (NUI), which is located 64 miles (103 kilometers) NNE of UMT.
- Because of Umiat Airport's relatively low elevation of 267 feet, planes can take off or land at Umiat 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 Umiat Airport (UMT) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,143 miles (16,324 kilometers) away in Villa Las Estrellas, Antarctica.
- Umiat Airport (UMT) currently has only 1 runway.