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

Arrival Airport:

Distance from FSI to GKN:
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- About this route
- FSI Airport Information
- GKN Airport Information
- Facts about FSI
- Facts about GKN
- 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 GKN
- List of Nearest Airports to GKN
- Map of Furthest Airports from GKN
- List of Furthest Airports from GKN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Gulkana Airport (GKN), Gulkana, Alaska, United States would travel a Great Circle distance of 2,773 miles (or 4,463 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 Gulkana 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 Gulkana 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: | GKN / PAGK |
Airport Name: | Gulkana Airport |
Location: | Gulkana, Alaska, United States |
GPS Coordinates: | 62°9'18"N by 145°27'15"W |
Area Served: | Gulkana, Alaska |
Operator/Owner: | State of Alaska DOT&PF |
Airport Type: | Public |
Elevation: | 1586 feet (483 meters) |
# of Runways: | 1 |
View all routes: | Routes from GKN |
More Information: | GKN 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.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- Post Field served as a base for flight training for the Air Service.
Facts about Gulkana Airport (GKN):
- As per Federal Aviation Administration records, the airport had 204 passenger boardings in calendar year 2008, 187 enplanements in 2009, and 141 in 2010.
- The furthest airport from Gulkana Airport (GKN) is Port Elizabeth International Airport (PLZ), which is located 10,451 miles (16,820 kilometers) away in Port Elizabeth, South Africa.
- Gulkana Airport covers an area of 1,678 acres at an elevation of 1,586 feet above mean sea level.
- The closest airport to Gulkana Airport (GKN) is Copper Center Airport (CZC), which is located only 16 miles (25 kilometers) SSE of GKN.
- Gulkana Airport (GKN) currently has only 1 runway.