Nonstop flight route between Fort Sill, Oklahoma, United States and Unalakleet, Alaska, United States:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Unalakleet Airport (UNK), Unalakleet, Alaska, United States would travel a Great Circle distance of 3,267 miles (or 5,258 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 Unalakleet 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 Unalakleet Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Henry Post Army Airfield (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 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 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.
• 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 is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.

Facts about Unalakleet Airport (UNK):

• The closest airport to Unalakleet Airport (UNK) is Shaktoolik Airport (SKK), which is located 36 miles (58 kilometers) NNW of UNK.
• Unalakleet Airport (UNK) has 2 runways.
• Because of Unalakleet Airport's relatively low elevation of 21 feet, planes can take off or land at Unalakleet 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.
• The furthest airport from Unalakleet Airport (UNK) is Cape Town International Airport (CPT), which is located 10,369 miles (16,688 kilometers) away in Cape Town, South Africa.