Nonstop flight route between Fort Sill, Oklahoma, United States and Big Mountain, Alaska, United States:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Big Mountain Air Force Station (BMX), Big Mountain, Alaska, United States would travel a Great Circle distance of 3,045 miles (or 4,901 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 Big Mountain Air Force 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 Big Mountain Air Force 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):

• After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
• 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.
• 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.
• 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 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.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.

Facts about Big Mountain Air Force Station (BMX):

• Because of Big Mountain Air Force Station's relatively low elevation of 663 feet, planes can take off or land at Big Mountain Air Force 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.
• In addition to being known as "Big Mountain Air Force Station", another name for BMX is "37AK".
• The furthest airport from Big Mountain Air Force Station (BMX) is Port Elizabeth International Airport (PLZ), which is located 10,683 miles (17,193 kilometers) away in Port Elizabeth, South Africa.
• Big Mountain Air Force Station (BMX) currently has only 1 runway.
• The closest airport to Big Mountain Air Force Station (BMX) is Kokhanok Airport (KNK), which is located only 17 miles (27 kilometers) ENE of BMX.