Nonstop flight route between Fort Sill, Oklahoma, United States and Wilmington, Ohio, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to ILN:
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- About this route
- FSI Airport Information
- ILN Airport Information
- Facts about FSI
- Facts about ILN
- 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 ILN
- List of Nearest Airports to ILN
- Map of Furthest Airports from ILN
- List of Furthest Airports from ILN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Wilmington Air Park (ILN), Wilmington, Ohio, United States would travel a Great Circle distance of 869 miles (or 1,399 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 relatively short distance between Henry Post Army Airfield and Wilmington Air Park, the route shown on this map most likely still appears to be a straight line.
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: | ILN / KILN |
Airport Name: | Wilmington Air Park |
Location: | Wilmington, Ohio, United States |
GPS Coordinates: | 39°25'41"N by 83°47'31"W |
Operator/Owner: | Clinton County Port Authority |
Airport Type: | Public |
Elevation: | 1077 feet (328 meters) |
# of Runways: | 2 |
View all routes: | Routes from ILN |
More Information: | ILN Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Post Field served as a base for flight training for the Air Service.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
Facts about Wilmington Air Park (ILN):
- The airport was formerly known as Clinton County Air Force Base.
- On January 19, 2010, DHL agreed to turn over the airport, including its two runways, control tower, buildings and cargo storage facilities to the Clinton County Port Authority.
- Wilmington Air Park (ILN) has 2 runways.
- The closest airport to Wilmington Air Park (ILN) is Dayton–Wright Brothers Airport (MGY), which is located 26 miles (41 kilometers) WNW of ILN.
- The furthest airport from Wilmington Air Park (ILN) is Margaret River Airport (MGV), which is located 11,326 miles (18,227 kilometers) away in Margaret River, Western Australia, Australia.