Nonstop flight route between Fort Sill, Oklahoma, United States and Ulaangom, Uvs Province, Mongolia:
Departure Airport:

Arrival Airport:

Distance from FSI to ULO:
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- About this route
- FSI Airport Information
- ULO Airport Information
- Facts about FSI
- Facts about ULO
- 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 ULO
- List of Nearest Airports to ULO
- Map of Furthest Airports from ULO
- List of Furthest Airports from ULO
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Ulaangom Airport (ULO), Ulaangom, Uvs Province, Mongolia would travel a Great Circle distance of 6,555 miles (or 10,549 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 Ulaangom 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 Ulaangom 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: | ULO / ZMUG |
Airport Name: | Ulaangom Airport |
Location: | Ulaangom, Uvs Province, Mongolia |
GPS Coordinates: | 49°58'23"N by 92°4'46"E |
Operator/Owner: | Civil Aviation Authority of Mongolia |
Airport Type: | Public |
# of Runways: | 1 |
View all routes: | Routes from ULO |
More Information: | ULO Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- 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.
Facts about Ulaangom Airport (ULO):
- Ulaangom Airport (ULO) currently has only 1 runway.
- Ulaangom Airport handled 12,300 passengers last year.
- The furthest airport from Ulaangom Airport (ULO) is Teniente Julio Gallardo Airfield (PNT), which is located 11,756 miles (18,920 kilometers) away in Puerto Natales, Chile.
- The closest airport to Ulaangom Airport (ULO) is Ölgii Airport (ULG), which is located 118 miles (190 kilometers) SW of ULO.