Nonstop flight route between Fort Sill, Oklahoma, United States and Tachilek, Myanmar (Burma):
Departure Airport:

Arrival Airport:

Distance from FSI to THL:
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- About this route
- FSI Airport Information
- THL Airport Information
- Facts about FSI
- Facts about THL
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to THL
- List of Nearest Airports to THL
- Map of Furthest Airports from THL
- List of Furthest Airports from THL
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Tachilek Airport (THL), Tachilek, Myanmar (Burma) would travel a Great Circle distance of 8,442 miles (or 13,585 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 Tachilek 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 Tachilek Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | THL / VYTL |
Airport Name: | Tachilek Airport |
Location: | Tachilek, Myanmar (Burma) |
GPS Coordinates: | 20°29'0"N by 99°56'7"E |
Area Served: | Tachilek, Myanmar |
Operator/Owner: | Government |
Airport Type: | Public |
Elevation: | 1280 feet (390 meters) |
# of Runways: | 1 |
View all routes: | Routes from THL |
More Information: | THL Maps & Info |
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.
- 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.
- 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.
- 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 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 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.
Facts about Tachilek Airport (THL):
- Tachilek Airport (THL) currently has only 1 runway.
- The closest airport to Tachilek Airport (THL) is Ban Huoeisay Airport (HOE), which is located 36 miles (58 kilometers) ESE of THL.
- The furthest airport from Tachilek Airport (THL) is Maria Reiche Neuman Airport (NZC), which is located 11,923 miles (19,188 kilometers) away in Nazca, Ica Region, Peru.