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

Arrival Airport:

Distance from FSI to KLL:
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- About this route
- FSI Airport Information
- KLL Airport Information
- Facts about FSI
- Facts about KLL
- 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 KLL
- List of Nearest Airports to KLL
- Map of Furthest Airports from KLL
- List of Furthest Airports from KLL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Levelock Airport (KLL), Levelock, Alaska, United States would travel a Great Circle distance of 3,100 miles (or 4,988 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 Levelock 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 Levelock 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: | KLL / |
Airport Names: |
|
Location: | Levelock, Alaska, United States |
GPS Coordinates: | 59°7'41"N by 156°51'30"W |
Area Served: | Levelock, Alaska |
Operator/Owner: | Alaska DOT&PF |
Airport Type: | Public |
Elevation: | 39 feet (12 meters) |
# of Runways: | 1 |
View all routes: | Routes from KLL |
More Information: | KLL 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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 is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
Facts about Levelock Airport (KLL):
- The furthest airport from Levelock Airport (KLL) is George Airport (GRJ), which is located 10,701 miles (17,221 kilometers) away in George, South Africa.
- The closest airport to Levelock Airport (KLL) is Ekwok Airport (KEK), which is located 27 miles (43 kilometers) NW of KLL.
- Levelock Airport, public-use airport located one nautical mile north of the central business district of Levelock, in the Lake and Peninsula Borough of the U.S.
- In addition to being known as "Levelock Airport", another name for KLL is "9Z8".
- Because of Levelock Airport's relatively low elevation of 39 feet, planes can take off or land at Levelock Airport 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.
- Levelock Airport (KLL) currently has only 1 runway.