Nonstop flight route between Ilorin, Nigeria and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from ILR to FSI:
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- About this route
- ILR Airport Information
- FSI Airport Information
- Facts about ILR
- Facts about FSI
- Map of Nearest Airports to ILR
- List of Nearest Airports to ILR
- Map of Furthest Airports from ILR
- List of Furthest Airports from ILR
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Ilorin International Airport (ILR), Ilorin, Nigeria and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 6,608 miles (or 10,634 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 Ilorin International Airport and Henry Post Army Airfield, 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 Ilorin International Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | ILR / DNIL |
Airport Name: | Ilorin International Airport |
Location: | Ilorin, Nigeria |
GPS Coordinates: | 8°26'26"N by 4°29'39"E |
Area Served: | Ilorin, Nigeria |
Airport Type: | Public |
Elevation: | 1126 feet (343 meters) |
# of Runways: | 1 |
View all routes: | Routes from ILR |
More Information: | ILR Maps & Info |
Arrival 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 |
Facts about Ilorin International Airport (ILR):
- Ilorin International Airport (ILR) currently has only 1 runway.
- The closest airport to Ilorin International Airport (ILR) is Ibadan Airport (IBA), which is located 82 miles (133 kilometers) SSW of ILR.
- The furthest airport from Ilorin International Airport (ILR) is Wallis Island (WLS), which is nearly antipodal to Ilorin International Airport (meaning Ilorin International Airport is almost on the exact opposite side of the Earth from Wallis Island), and is located 12,100 miles (19,473 kilometers) away in Wallis and Futuna Islands.
Facts about Henry Post Army Airfield (FSI):
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.