Nonstop flight route between Portsmouth, New Hampshire, United States and Georgetown, Ascension Island, Saint Helena:

About this route:

A direct, nonstop flight between Portsmouth International Airport at Pease (PSM), Portsmouth, New Hampshire, United States and RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena would travel a Great Circle distance of 4,990 miles (or 8,031 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 Ascension, 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 Ascension. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Portsmouth International Airport at Pease (PSM):

• Portsmouth International Airport at Pease covers an area of 3,000 acres at an elevation of 100 feet above mean sea level.
• Portsmouth International Airport at Pease (PSM) currently has only 1 runway.
• It shares the runway with the Pease Air National Guard Base, which is actively utilized by the 157th Air Refueling Wing of the New Hampshire Air National Guard, an Air Mobility Command -gained Air National Guard unit operating the KC-135R Stratotanker aircraft.
• 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 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.
• 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.

Facts about RAF Ascension (ASI):

• The NASA Tracking Station at Devil's Ashpit and the Cable & Wireless Earth Station at Donkey Plain were built in the "mid-sixties" for space operations and communications, including the latter's use for transmitting "microwave borne data via the Early Bird Satellite back to the NASA facility at Andover, Maine.
• The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
• The furthest airport from RAF Ascension (ASI) is Ujae Airport (UJE), which is nearly antipodal to RAF Ascension (meaning RAF Ascension is almost on the exact opposite side of the Earth from Ujae Airport), and is located 12,370 miles (19,907 kilometers) away in Ujae Atoll, Marshall Islands.
• Ascension serves as a diversion airport for ETOPS aircraft crossing the Atlantic.
• The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
• In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".