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):

• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
• 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.
• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• 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.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• Henry Post Army Airfield (FSI) currently has only 1 runway.

Facts about Adak Airport (ADK):

• Once an American Airlines Boeing 777-200 from Dallas-Fort Worth International Airport en route to Tokyo Narita diverted to Adak Airport due to a fire warning in the cargo hold.
• 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.
• The closest airport to Adak Airport (ADK) is Atka Airport (AKB), which is located 106 miles (171 kilometers) ENE of ADK.
• 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 is a state owned, public use airport located west of Adak, on Adak Island in the U.S.
• Adak Airport (ADK) has 2 runways.