Nonstop flight route between Fort Sill, Oklahoma, United States and Exmouth, Western Australia, Australia:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and RAAF Learmonth (LEA), Exmouth, Western Australia, Australia would travel a Great Circle distance of 10,297 miles (or 16,571 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 RAAF Learmonth, 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 RAAF Learmonth. 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
• 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.
• 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 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.

Facts about RAAF Learmonth (LEA):

• Learmonth Airport was ranked 49th in Australia for the number of revenue passengers served in financial year 2012-2013.
• In the mid-1960s, the Federal Government gave its support to plans by the Chief of the Air Staff, Air Marshal Val Hancock, to redevelop Learmonth as a 'bare base', due to its proximity to Indonesia.
• The furthest airport from RAAF Learmonth (LEA) is Fernando Luis Ribas Dominicci Airport (SIG), which is nearly antipodal to RAAF Learmonth (meaning RAAF Learmonth is almost on the exact opposite side of the Earth from Fernando Luis Ribas Dominicci Airport), and is located 12,175 miles (19,594 kilometers) away in San Juan, Puerto Rico.
• RAAF Learmonth (LEA) currently has only 1 runway.
• The RAAF also operates the Learmonth Air Weapons Range which covers about 18,954 ha and is located 30 km south-west of the airbase.
• Because of RAAF Learmonth's relatively low elevation of 19 feet, planes can take off or land at RAAF Learmonth 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 "RAAF Learmonth", another name for LEA is "Learmonth Airport".
• RAAF Learmonth handled 90,861 passengers last year.
• The closest airport to RAAF Learmonth (LEA) is Barrow Island Airport (BWB), which is located 127 miles (204 kilometers) NE of LEA.