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

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Adak Airport (ADK), Adak Island, Alaska, United States would travel a Great Circle distance of 3,909 miles (or 6,292 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 Adak 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 Adak 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):

• 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.
• Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
• 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.

Facts about Adak Airport (ADK):

• The furthest airport from Adak Airport (ADK) is Cape Town International Airport (CPT), which is located 10,985 miles (17,679 kilometers) away in Cape Town, South Africa.
• Scheduled passenger service service is subsidized by the Essential Air Service program.
• Because of Adak Airport's relatively low elevation of 18 feet, planes can take off or land at Adak 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.
• Adak Airport (ADK) has 2 runways.
• As per the Federal Aviation Administration, this airport had 1,989 passenger boardings in calendar year 2008, 1,907 in 2009, and 2,097 in 2010.
• The closest airport to Adak Airport (ADK) is Atka Airport (AKB), which is located 106 miles (171 kilometers) ENE of ADK.
• Adak Airport was once featured on the television reality show, Alaska State Troopers.