Nonstop flight route between Portsmouth, New Hampshire, United States and Marham, Norfolk, East Anglia, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from PSM to KNF:
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- About this route
- PSM Airport Information
- KNF Airport Information
- Facts about PSM
- Facts about KNF
- Map of Nearest Airports to PSM
- List of Nearest Airports to PSM
- Map of Furthest Airports from PSM
- List of Furthest Airports from PSM
- 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 Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and RAF Marham (KNF), Marham, Norfolk, East Anglia, United Kingdom would travel a Great Circle distance of 3,234 miles (or 5,205 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 Portsmouth International Airport at Pease 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 Portsmouth International Airport at Pease 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: | PSM / KPSM |
Airport Name: | Portsmouth International Airport at Pease |
Location: | Portsmouth, New Hampshire, United States |
GPS Coordinates: | 43°4'41"N by 70°49'23"W |
Area Served: | Portsmouth, New Hampshire |
Operator/Owner: | Pease Development Authority |
Airport Type: | Public / Military |
Elevation: | 100 feet (30 meters) |
# of Runways: | 1 |
View all routes: | Routes from PSM |
More Information: | PSM 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 Portsmouth International Airport at Pease (PSM):
- Portsmouth International Airport at Pease (PSM) currently has only 1 runway.
- The airport is located within the Pease International Tradeport, a result of the ongoing redevelopment of the former Pease Air Force Base which was closed under Base Realignment and Closure Commission action in the late 1980s and early 1990s.
- Because of Portsmouth International Airport at Pease's relatively low elevation of 100 feet, planes can take off or land at Portsmouth International Airport at Pease 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.
- The furthest airport from Portsmouth International Airport at Pease (PSM) is Margaret River Airport (MGV), which is located 11,729 miles (18,875 kilometers) away in Margaret River, Western Australia, Australia.
- Pease was one of 7 Launch Abort Sites and one of 18 Emergency Landing Sites for NASA space shuttle orbiters.
- The closest airport to Portsmouth International Airport at Pease (PSM) is Sanford Seacoast Regional Airport (SFM), which is located 23 miles (36 kilometers) NNE of PSM.
Facts about RAF Marham (KNF):
- The GR4A is the reconnaissance variant of the Panavia Tornado but the modern reconnaissance equipment used on the Tornado is interchangeable between the GR4 and GR4A variants, and as such each squadron uses a mix of the two variants.
- During March 1944, RAF Marham closed for the construction of new concrete runways, perimeter track, and dispersal areas, marking the end of its wartime operations.
- 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.
- Opened in August 1916 close to the former Royal Naval Air Station Narborough, later RAF Narborough, the Marham base was originally a military night landing ground on an 80-acre site within the boundary of the present day RAF Marham.
- The closest airport to RAF Marham (KNF) is RAF Lakenheath (LKZ), which is located only 17 miles (27 kilometers) S of KNF.