Nonstop flight route between Willow Grove, Pennsylvania, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from NXX to FSI:
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- About this route
- NXX Airport Information
- FSI Airport Information
- Facts about NXX
- Facts about FSI
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- Map of Furthest Airports from NXX
- List of Furthest Airports from NXX
- Map of Nearest Airports to FSI
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About this route:
A direct, nonstop flight between NAS JRB Willow Grove (NXX), Willow Grove, Pennsylvania, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,328 miles (or 2,137 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 NAS JRB Willow Grove and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | NXX / KNXX |
Airport Name: | NAS JRB Willow Grove |
Location: | Willow Grove, Pennsylvania, United States |
GPS Coordinates: | 40°11'59"N by 75°8'53"W |
Operator/Owner: | United States Navy |
Airport Type: | Military: Naval Air Station |
Elevation: | 335 feet (102 meters) |
# of Runways: | 1 |
View all routes: | Routes from NXX |
More Information: | NXX 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 NAS JRB Willow Grove (NXX):
- NAS JRB Willow Grove (NXX) currently has only 1 runway.
- Because of NAS JRB Willow Grove's relatively low elevation of 335 feet, planes can take off or land at NAS JRB Willow Grove 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.
- Currently, the 111th Fighter Wing, operating the A-10 Thunderbolt II, has lost all its aircraft to other ANG Squadrons under BRAC.
- On May 28, 2005, the Base Realignment and Closure commission recommended that NAS JRB Willow Grove be closed as part of the 2005 BRAC round, that the tenant Air Force Reserve Command airlift wing be inactivated and that Navy Reserve and Marine Corps Reserve flying units relocate to McGuire Air Force Base in New Jersey as tenant units.
- The closest airport to NAS JRB Willow Grove (NXX) is Wings Field (BBX), which is located only 8 miles (12 kilometers) SW of NXX.
- The furthest airport from NAS JRB Willow Grove (NXX) is Margaret River Airport (MGV), which is located 11,726 miles (18,871 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Henry Post Army Airfield (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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.