Nonstop flight route between Georgetown, Ascension Island, Saint Helena and San Francisco, California, United States:

About this route:

A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and San Francisco International Airport (SFO), San Francisco, California, United States would travel a Great Circle distance of 7,536 miles (or 12,128 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 Ascension and San Francisco International Airport, 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 Ascension and San Francisco International Airport. 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 RAF Ascension (ASI):

• The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
• In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
• 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.
• Ascension serves as a diversion airport for ETOPS aircraft crossing the Atlantic.
• 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.

Facts about San Francisco International Airport (SFO):

• San Francisco International Airport (SFO) has 4 runways.
• Formerly known as the "South Terminal," Terminal 1 has Boarding Area B and Boarding Area C.
• San Francisco International Airport handled 44,477,209 passengers last year.
• San Francisco International Airport is an international airport located 13 miles south of downtown San Francisco, California, near Millbrae and San Bruno in unincorporated San Mateo County.
• In summer 2011, Lufthansa and Air France operated the Airbus A380 at SFO seasonally, the first A380 scheduled service to the airport.
• A long-planned extension of the Bay Area Rapid Transit system to the airport opened on June 22, 2003, allowing passengers to board BART trains at the international terminal to San Francisco or the East Bay.
• The furthest airport from San Francisco International Airport (SFO) is Tôlanaro Airport (FTU), which is located 11,365 miles (18,290 kilometers) away in Tôlanaro, Madagascar.
• Because of San Francisco International Airport's relatively low elevation of 13 feet, planes can take off or land at San Francisco International Airport 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 San Francisco International Airport (SFO) is Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF), which is located only 10 miles (16 kilometers) SW of SFO.
• SFO has expanded through the decades.
• The San Francisco International Airport BART station, located in Parking Garage G of the International Terminal, is the only direct rail link between the airport, the city of San Francisco, and the general Bay Area.