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

Arrival Airport:

Distance from IKO to FSI:
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- About this route
- IKO Airport Information
- FSI Airport Information
- Facts about IKO
- Facts about FSI
- Map of Nearest Airports to IKO
- List of Nearest Airports to IKO
- Map of Furthest Airports from IKO
- List of Furthest Airports from IKO
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Nikolski Air Station (IKO), Nikolski, Alaska, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 3,573 miles (or 5,750 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 Nikolski Air Station and Henry Post Army Airfield, 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 Nikolski Air Station and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | IKO / PAKO |
Airport Name: | Nikolski Air Station |
Location: | Nikolski, Alaska, United States |
GPS Coordinates: | 52°56'30"N by 168°50'56"W |
Area Served: | Nikolski, Alaska |
Operator/Owner: | Aleut Corporation |
Airport Type: | Private |
Elevation: | 77 feet (23 meters) |
# of Runways: | 1 |
View all routes: | Routes from IKO |
More Information: | IKO Maps & Info |
Arrival 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 |
Facts about Nikolski Air Station (IKO):
- Because of Nikolski Air Station's relatively low elevation of 77 feet, planes can take off or land at Nikolski Air Station 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 Nikolski Air Station (IKO) is Cape Town International Airport (CPT), which is located 11,076 miles (17,824 kilometers) away in Cape Town, South Africa.
- Nikolski Air Station resides at elevation of 77 feet above mean sea level.
- Nikolski Air Station (IKO) currently has only 1 runway.
- The closest airport to Nikolski Air Station (IKO) is Unalaska Airport (DUT), which is located 116 miles (186 kilometers) NE of IKO.
Facts about Henry Post Army Airfield (FSI):
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- 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.