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

Arrival Airport:

Distance from FSI to IDF:
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- About this route
- FSI Airport Information
- IDF Airport Information
- Facts about FSI
- Facts about IDF
- 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 IDF
- List of Nearest Airports to IDF
- Map of Furthest Airports from IDF
- List of Furthest Airports from IDF
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Idiofa Airport (IDF), Idiofa, Democratic Republic of the Congo would travel a Great Circle distance of 7,997 miles (or 12,870 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 Idiofa 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 Idiofa 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: | IDF / FZCB |
Airport Name: | Idiofa Airport |
Location: | Idiofa, Democratic Republic of the Congo |
GPS Coordinates: | 5°0'0"S by 19°36'0"E |
Airport Type: | Public |
Elevation: | 2299 feet (701 meters) |
View all routes: | Routes from IDF |
More Information: | IDF Maps & Info |
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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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 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.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
Facts about Idiofa Airport (IDF):
- The closest airport to Idiofa Airport (IDF) is Kikwit Airport (KKW), which is located 56 miles (90 kilometers) W of IDF.
- The furthest airport from Idiofa Airport (IDF) is Cassidy International Airport (CXI), which is nearly antipodal to Idiofa Airport (meaning Idiofa Airport is almost on the exact opposite side of the Earth from Cassidy International Airport), and is located 12,141 miles (19,539 kilometers) away in Christmas Island, Kiribati.