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

Arrival Airport:

Distance from FSI to ILG:
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- About this route
- FSI Airport Information
- ILG Airport Information
- Facts about FSI
- Facts about ILG
- 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 ILG
- List of Nearest Airports to ILG
- Map of Furthest Airports from ILG
- List of Furthest Airports from ILG
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Wilmington/Philadelphia Regional Airport (ILG), Wilmington, Delaware, United States would travel a Great Circle distance of 1,298 miles (or 2,089 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/Philadelphia Regional Airport, 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: | ILG / KILG |
Airport Name: | Wilmington/Philadelphia Regional Airport |
Location: | Wilmington, Delaware, United States |
GPS Coordinates: | 39°40'42"N by 75°36'24"W |
Area Served: | Wilmington, Delaware |
Operator/Owner: | New Castle County, Delaware |
Airport Type: | Public |
Elevation: | 80 feet (24 meters) |
# of Runways: | 3 |
View all routes: | Routes from ILG |
More Information: | ILG 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 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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.
- 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 Wilmington/Philadelphia Regional Airport (ILG):
- The airport opened before World War II, named the Wilmington Airport and the Greater Wilmington Airport.
- On June 29, 2006 a Delta Air Lines affiliate began flights from Atlanta's Hartsfield-Jackson Atlanta International Airport to Wilmington-Philadelphia Regional Airport, the first airline service in six years.
- The closest airport to Wilmington/Philadelphia Regional Airport (ILG) is Philadelphia Seaplane BaseChandler Field (PSQ), which is located 21 miles (33 kilometers) NE of ILG.
- The airport covers 1,250 acres at an elevation of 80 feet.
- The furthest airport from Wilmington/Philadelphia Regional Airport (ILG) is Margaret River Airport (MGV), which is located 11,724 miles (18,869 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Wilmington/Philadelphia Regional Airport's relatively low elevation of 80 feet, planes can take off or land at Wilmington/Philadelphia Regional Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- Wilmington/Philadelphia Regional Airport (ILG) has 3 runways.
- In the late 1990s the county leased the debt-stricken airport to the bi-state Delaware River and Bay Authority, operators of the Delaware Memorial Bridge, on a thirty-year lease with the provision that the DRBA may seek up to two additional thirty-year leases.