Nonstop flight route between Fort Sill, Oklahoma, United States and Chiang Mai, Thailand:

About this route:

A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Chiang Mai International Airport (CNX), Chiang Mai, Thailand would travel a Great Circle distance of 8,574 miles (or 13,798 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 Chiang Mai International 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 Chiang Mai International 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):

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

• It is the major gateway to the north of Thailand, and currently the fourth busiest airport in the country.
• Among the ongoing upgrades in 2014, apron will be expanded for larger planes, operating hours extended 6 hours to 24 hours, international arrival hall and domestic departure halls areas tripled.
• The furthest airport from Chiang Mai International Airport (CNX) is Capitán FAP Renán Elías Olivera International Airport (PIO), which is located 11,965 miles (19,256 kilometers) away in Pisco, Peru.
• In addition to being known as "Chiang Mai International Airport", another name for CNX is "ท่าอากาศยานเชียงใหม่".
• Chiang Mai International Airport handled 5,463,921 passengers last year.
• Chiang Mai International Airport (CNX) currently has only 1 runway.
• Chiang Mai International Airport is an international airport serving Chiang Mai, the capital city of Chiang Mai Province in Thailand.
• The closest airport to Chiang Mai International Airport (CNX) is Lampang Airport (LPT), which is located 49 miles (79 kilometers) SE of CNX.