Nonstop flight route between Fort Sill, Oklahoma, United States and Xieng Khouang, Laos:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Xieng Khouang Airport (XKH), Xieng Khouang, Laos would travel a Great Circle distance of 8,440 miles (or 13,583 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 Xieng Khouang 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 Xieng Khouang 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):

• Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
• As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
• 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
• In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
• With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
• 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.
• 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.

Facts about Xieng Khouang Airport (XKH):

• The closest airport to Xieng Khouang Airport (XKH) is Luang Prabang International Airport (LPQ), which is located 73 miles (117 kilometers) WNW of XKH.
• In addition to being known as "Xieng Khouang Airport", another name for XKH is "ສະຫນາມບິນຊຽງຂວາງ".
• The furthest airport from Xieng Khouang Airport (XKH) is Maria Reiche Neuman Airport (NZC), which is nearly antipodal to Xieng Khouang Airport (meaning Xieng Khouang Airport is almost on the exact opposite side of the Earth from Maria Reiche Neuman Airport), and is located 12,097 miles (19,468 kilometers) away in Nazca, Ica Region, Peru.