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

Arrival Airport:

Distance from FSI to KNF:
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- About this route
- FSI Airport Information
- KNF Airport Information
- Facts about FSI
- Facts about 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
- Map of Nearest Airports to KNF
- List of Nearest Airports to KNF
- Map of Furthest Airports from KNF
- List of Furthest Airports from KNF
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and RAF Marham (KNF), Marham, Norfolk, East Anglia, United Kingdom 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 Henry Post Army Airfield and RAF Marham, 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 Henry Post Army Airfield and RAF Marham. You'll see that it will travel the same route of the red line on this map!
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: | 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 |
Facts about Henry Post Army Airfield (FSI):
- Post Field served as a base for flight training for the Air Service.
- 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.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- 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.
- 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.
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.
- During 1980-82, 24 Hardened Aircraft Shelters were constructed to house future strike aircraft, which would eventually see the arrival of the Panavia Tornado in 1982.
- 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.
- 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.
- RAF Marham is the 'parent' station of