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

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Casco Cove Coast Guard Station (ATU), Attu Island, Alaska, United States would travel a Great Circle distance of 4,296 miles (or 6,914 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 Casco Cove Coast Guard Station, 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 Casco Cove Coast Guard Station. 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.
• Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• 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.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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.

Facts about Casco Cove Coast Guard Station (ATU):

• The furthest airport from Casco Cove Coast Guard Station (ATU) is Cape Town International Airport (CPT), which is located 10,631 miles (17,109 kilometers) away in Cape Town, South Africa.
• Casco Cove is one of the most isolated and remote airports in the United States.
• In addition to being known as "Casco Cove Coast Guard Station", other names for ATU include "LORAN Station Attu" and "(former Naval Air Facility Attu)".
• On January 1, 1945, 2nd Lt.
• Casco Cove Coast Guard Station (ATU) currently has only 1 runway.
• Because of Casco Cove Coast Guard Station's relatively low elevation of 88 feet, planes can take off or land at Casco Cove Coast Guard Station 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 closest airport to Casco Cove Coast Guard Station (ATU) is Eareckson Air Station (SYA), which is located 40 miles (65 kilometers) ESE of ATU.