Nonstop flight route between Marham, Norfolk, East Anglia, United Kingdom and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from KNF to FSI:
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- About this route
- KNF Airport Information
- FSI Airport Information
- Facts about KNF
- Facts about FSI
- Map of Nearest Airports to KNF
- List of Nearest Airports to KNF
- Map of Furthest Airports from KNF
- List of Furthest Airports from KNF
- 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 Marham (KNF), Marham, Norfolk, East Anglia, United Kingdom and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 4,700 miles (or 7,563 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 Marham 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 Marham 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: | KNF / EGYM |
Airport Name: | RAF Marham |
Location: | Marham, Norfolk, East Anglia, United Kingdom |
GPS Coordinates: | 52°38'53"N by 0°33'2"E |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from KNF |
More Information: | KNF 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 Marham (KNF):
- The closest airport to RAF Marham (KNF) is RAF Lakenheath (LKZ), which is located only 17 miles (27 kilometers) S of KNF.
- RAF Marham is the 'parent' station of
- The furthest airport from RAF Marham (KNF) is Chatham Islands (CHT), which is located 11,811 miles (19,008 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- In 1935, work started on a new airfield which became active on 1 April 1937, with a resident heavy bomber unit from within 3 Group, RAF Bomber Command.
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- 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.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.