Nonstop flight route between Fort Sill, Oklahoma, United States and Betou, Republic of the Congo:
Departure Airport:

Arrival Airport:

Distance from FSI to BTB:
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- About this route
- FSI Airport Information
- BTB Airport Information
- Facts about FSI
- Facts about BTB
- 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 BTB
- List of Nearest Airports to BTB
- Map of Furthest Airports from BTB
- List of Furthest Airports from BTB
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Bétou Airport (BTB), Betou, Republic of the Congo would travel a Great Circle distance of 7,598 miles (or 12,227 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 Bétou 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 Bétou 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: | BTB / FCOT |
Airport Name: | Bétou Airport |
Location: | Betou, Republic of the Congo |
GPS Coordinates: | 3°2'59"N by 18°30'0"E |
Area Served: | Bétou, Republic of Congo |
Elevation: | 1168 feet (356 meters) |
View all routes: | Routes from BTB |
More Information: | BTB Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- 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.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
Facts about Bétou Airport (BTB):
- The closest airport to Bétou Airport (BTB) is Bangui M'Poko International Airport (BGF), which is located 93 miles (150 kilometers) N of BTB.
- The furthest airport from Bétou Airport (BTB) is Cassidy International Airport (CXI), which is located 11,986 miles (19,290 kilometers) away in Christmas Island, Kiribati.