Nonstop flight route between St Andrews, Scotland, United Kingdom and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from ADX to FSI:
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- About this route
- ADX Airport Information
- FSI Airport Information
- Facts about ADX
- Facts about FSI
- Map of Nearest Airports to ADX
- List of Nearest Airports to ADX
- Map of Furthest Airports from ADX
- List of Furthest Airports from ADX
- 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 Leuchars (ADX), St Andrews, Scotland, United Kingdom and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,461 miles (or 7,179 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 Leuchars 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 Leuchars 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: | ADX / EGQL |
Airport Name: | RAF Leuchars |
Location: | St Andrews, Scotland, United Kingdom |
GPS Coordinates: | 56°22'23"N by 2°52'6"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from ADX |
More Information: | ADX 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 Leuchars (ADX):
- The station is also home to No.
- The furthest airport from RAF Leuchars (ADX) is Ryan's Creek Aerodrome (SZS), which is located 11,678 miles (18,793 kilometers) away in Stewart Island, New Zealand.
- The unit was formally named 'Royal Air Force Leuchars' in March 1920, but nevertheless retained its strong naval links.
- The closest airport to RAF Leuchars (ADX) is Dundee Airport (DND), which is located only 8 miles (13 kilometers) NW of ADX.
- On 18 July 2011 Defence Secretary Liam Fox announced that RAF Leuchars would close, whilst RAF Lossiemouth in Moray would be spared as part of the Strategic Defence and Security Review.
- The next generation of jets to be stationed at Leuchars were the Hawker Hunter and the Gloster Javelin, with air-sea rescue services provided by Westland Whirlwind helicopters.
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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- 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.