Nonstop flight route between Fort Sill, Oklahoma, United States and Pituffik, Greenland:
Departure Airport:

Arrival Airport:

Distance from FSI to THU:
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- About this route
- FSI Airport Information
- THU Airport Information
- Facts about FSI
- Facts about THU
- 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 THU
- List of Nearest Airports to THU
- Map of Furthest Airports from THU
- List of Furthest Airports from THU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Thule Air Base (THU), Pituffik, Greenland would travel a Great Circle distance of 3,040 miles (or 4,892 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 Thule Air Base, 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 Thule Air Base. 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: | THU / BGTL |
Airport Names: |
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Location: | Pituffik, Greenland |
GPS Coordinates: | 76°31'51"N by 68°42'11"W |
View all routes: | Routes from THU |
More Information: | THU Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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 Thule Air Base (THU):
- The furthest airport from Thule Air Base (THU) is Hobart International Airport (HBA), which is located 9,883 miles (15,905 kilometers) away in Hobart, Tasmania, Australia.
- In 1957 construction began on 4 Nike Missile sites around the base, and they and their radar systems were operational by the end of 1958.
- After liberation, Denmark ratified the Kauffmann treaty but began efforts to take over U.S.
- In addition to being known as "Thule Air Base", another name for THU is "Thule AB".
- There is only a brief period each year in the summer when sea ice thins sufficiently to send supply ships to the base.
- Late 1950s the DEW 1 to 4 where build as "weather stations", Thule Air Base would act as an supply station for the DYE bases.
- Thule Air Base has served as the regional hub for nearby installations, including Cape Atholl, Camp Century, Camp TUTO, Sites 1 and 2, P-Mountain, J-Site, North and South Mountains, and a research rocket firing site.
- In 1959, the airbase was the main staging point for the construction of Camp Century, some 150 mi from the base.
- Thule Air Base is the U.S.
- Knud Rasmussen was the first to recognize the Pituffik plain as ideal for an airport.
- The closest airport to Thule Air Base (THU) is Savissivik Heliport (SVR), which is located 69 miles (111 kilometers) ESE of THU.