Nonstop flight route between Fort Sill, Oklahoma, United States and Lockhart River, Queensland, Australia:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Lockhart River Airport (IRG), Lockhart River, Queensland, Australia would travel a Great Circle distance of 8,319 miles (or 13,388 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 Lockhart River 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 Lockhart River 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 first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
• 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.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
• 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.
• By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.

Facts about Lockhart River Airport (IRG):

• Because of Lockhart River Airport's relatively low elevation of 77 feet, planes can take off or land at Lockhart River 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.
• The closest airport to Lockhart River Airport (IRG) is Coen Airport (CUQ), which is located 69 miles (110 kilometers) S of IRG.
• In addition, the 479th Service Squadron provided supplies for the B-26 and B-17s assigned to the airport, as well as operating a repair and maintenance depot for B-24 Liberator aircraft.
• The furthest airport from Lockhart River Airport (IRG) is Cesária Évora International Airport (VXE), which is located 11,611 miles (18,686 kilometers) away in São Vicente, Cape Verde.
• Lockhart River Airport (IRG) currently has only 1 runway.