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 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 end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
• 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.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.

Facts about Adak Airport (ADK):

• Adak's airport is one of the largest and most sophisticated airports in the Aleutian Islands.
• Adak Airport (ADK) has 2 runways.
• 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 closest airport to Adak Airport (ADK) is Atka Airport (AKB), which is located 106 miles (171 kilometers) ENE of ADK.
• 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.
• Adak Airport resides at elevation of 18 feet above mean sea level.
• Following the war, the AAF turned Adak over to the Navy who established anti-submarine warfare base there.
• 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.
• 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.