Nonstop flight route between High Wycombe, Buckinghamshire, England, United Kingdom and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from HYC to FSI:
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- About this route
- HYC Airport Information
- FSI Airport Information
- Facts about HYC
- Facts about FSI
- Map of Nearest Airports to HYC
- List of Nearest Airports to HYC
- Map of Furthest Airports from HYC
- List of Furthest Airports from HYC
- 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 RAF High Wycombe (HYC), High Wycombe, Buckinghamshire, England, United Kingdom and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,681 miles (or 7,534 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 RAF High Wycombe 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 RAF High Wycombe 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: | HYC / EGUH |
Airport Name: | RAF High Wycombe |
Location: | High Wycombe, Buckinghamshire, England, United Kingdom |
GPS Coordinates: | 51°40'53"N by 0°48'6"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from HYC |
More Information: | HYC 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 RAF High Wycombe (HYC):
- Since 2009, the station has been responsible for reviewing UFO sightings as part of efforts to identify any possible unauthorised military incursions into UK airspace.
- The furthest airport from RAF High Wycombe (HYC) is Dunedin International Airport (DUD), which is located 11,867 miles (19,098 kilometers) away in Dunedin, Otago, New Zealand.
- The actor David Jason officially opened the station's new welfare centre, named after Wing Commander Alan Oakeshott, in July 2011.
- Buildings were designed to resemble other uses, such as the Officers' Mess which was built to look like a manor house.
- The site is a non-flying station and was home to RAF Strike Command before it became part of the newly formed RAF Air Command on 1 April 2007.
- During the Second World War High Wycombe was used by the United States Army Air Forces.
- To preserve secrecy, the station was known as "Southdown" in March 1940, as part of a directive by the Air Ministry.
- The closest airport to RAF High Wycombe (HYC) is RAF Benson (BEX), which is located only 13 miles (22 kilometers) WSW of HYC.
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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Post Field served as a base for flight training for the Air Service.
- Air Service/Corps units assigned to Post Field between 1919 and 1941