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

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Port Graham Airport (PGM), Port Graham, Alaska, United States would travel a Great Circle distance of 2,926 miles (or 4,709 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 Port Graham 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 Port Graham 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 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.
• 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 (FSI) currently has only 1 runway.
• 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.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• Post Field served as a base for flight training for the Air Service.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.

Facts about Port Graham Airport (PGM):

• Port Graham Airport (PGM) currently has only 1 runway.
• The furthest airport from Port Graham Airport (PGM) is Port Elizabeth International Airport (PLZ), which is located 10,680 miles (17,188 kilometers) away in Port Elizabeth, South Africa.
• The closest airport to Port Graham Airport (PGM) is Nanwalek Airport (formerly English Bay Airport) (KEB), which is located only 3 miles (5 kilometers) W of PGM.
• Because of Port Graham Airport's relatively low elevation of 93 feet, planes can take off or land at Port Graham 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.