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

Arrival Airport:

Distance from FSI to OBY:
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- About this route
- FSI Airport Information
- OBY Airport Information
- Facts about FSI
- Facts about OBY
- 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 OBY
- List of Nearest Airports to OBY
- Map of Furthest Airports from OBY
- List of Furthest Airports from OBY
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Ittoqqortoormiit Heliport (OBY), Ittoqqortoormiit, Greenland would travel a Great Circle distance of 3,669 miles (or 5,905 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 Ittoqqortoormiit 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 Ittoqqortoormiit 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: | OBY / BGSC |
Airport Name: | Ittoqqortoormiit Heliport |
Location: | Ittoqqortoormiit, Greenland |
GPS Coordinates: | 70°29'17"N by 21°58'18"W |
Area Served: | Ittoqqortoormiit, Greenland |
Operator/Owner: | Mittarfeqarfiit |
Airport Type: | Public |
Elevation: | 238 feet (73 meters) |
View all routes: | Routes from OBY |
More Information: | OBY Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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 Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
Facts about Ittoqqortoormiit Heliport (OBY):
- Because of Ittoqqortoormiit Heliport's relatively low elevation of 238 feet, planes can take off or land at Ittoqqortoormiit 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 closest airport to Ittoqqortoormiit Heliport (OBY) is Nerlerit Inaat Airport (CNP), which is located 23 miles (38 kilometers) NW of OBY.
- The furthest airport from Ittoqqortoormiit Heliport (OBY) is Ryan's Creek Aerodrome (SZS), which is located 10,773 miles (17,337 kilometers) away in Stewart Island, New Zealand.
- Ittoqqortoormiit Heliport handled 834 passengers last year.