Nonstop flight route between Birch Creek, Alaska, United States and Fort Sill, Oklahoma, United States:

About this route:

A direct, nonstop flight between Birch Creek Airport (KBC), Birch Creek, Alaska, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 2,894 miles (or 4,658 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 Birch Creek Airport and Henry Post Army Airfield, 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 Birch Creek Airport and Henry Post Army Airfield. 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 Birch Creek Airport (KBC):

• In addition to being known as "Birch Creek Airport", another name for KBC is "Z91".
• The furthest airport from Birch Creek Airport (KBC) is Port Elizabeth International Airport (PLZ), which is located 10,178 miles (16,381 kilometers) away in Port Elizabeth, South Africa.
• Birch Creek Airport (KBC) currently has only 1 runway.
• The closest airport to Birch Creek Airport (KBC) is Fort Yukon Airport (FYU), which is located 26 miles (42 kilometers) NE of KBC.
• Because of Birch Creek Airport's relatively low elevation of 450 feet, planes can take off or land at Birch Creek 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.

Facts about Henry Post Army Airfield (FSI):

• Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• Henry Post Army Airfield (FSI) currently has only 1 runway.
• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• Post Field served as a base for flight training for the Air Service.
• Air Service/Corps units assigned to Post Field between 1919 and 1941
• 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 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.