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

Arrival Airport:

Distance from FSI to IUI:
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- About this route
- FSI Airport Information
- IUI Airport Information
- Facts about FSI
- Facts about IUI
- 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 IUI
- List of Nearest Airports to IUI
- Map of Furthest Airports from IUI
- List of Furthest Airports from IUI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Innaarsuit Heliport (IUI), Innaarsuit, Greenland would travel a Great Circle distance of 3,036 miles (or 4,886 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 Innaarsuit Heliport, 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 Innaarsuit Heliport. 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: | IUI / BGIN |
Airport Name: | Innaarsuit Heliport |
Location: | Innaarsuit, Greenland |
GPS Coordinates: | 73°11'58"N by 56°2'49"W |
Area Served: | Innaarsuit, Greenland |
Operator/Owner: | Mittarfeqarfiit |
Airport Type: | Public |
Elevation: | 95 feet (29 meters) |
View all routes: | Routes from IUI |
More Information: | IUI Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
Facts about Innaarsuit Heliport (IUI):
- Because of Innaarsuit Heliport's relatively low elevation of 95 feet, planes can take off or land at Innaarsuit Heliport 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 Innaarsuit Heliport (IUI) is Hobart International Airport (HBA), which is located 10,204 miles (16,422 kilometers) away in Hobart, Tasmania, Australia.
- The closest airport to Innaarsuit Heliport (IUI) is Tasiusaq Heliport (TQA), which is located only 12 miles (19 kilometers) N of IUI.