Nonstop flight route between Sion, Switzerland and San Francisco, California, United States:

About this route:

A direct, nonstop flight between Sion Airport (SIR), Sion, Switzerland and San Francisco International Airport (SFO), San Francisco, California, United States would travel a Great Circle distance of 5,859 miles (or 9,429 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 Sion Airport 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 Sion Airport 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 Sion Airport (SIR):

• In addition to being known as "Sion Airport", other names for SIR include "Aéroport de Sion" and "LSGS /LSMS".
• The furthest airport from Sion Airport (SIR) is Chatham Islands (CHT), which is nearly antipodal to Sion Airport (meaning Sion Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,188 miles (19,615 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• The closest airport to Sion Airport (SIR) is Aosta Valley Airport (AOT), which is located 33 miles (54 kilometers) S of SIR.
• Sion Airport (SIR) has 2 runways.

Facts about San Francisco International Airport (SFO):

• 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 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.
• San Francisco International Airport (SFO) has 4 runways.
• 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.
• SFO is owned and policed by the City and County of San Francisco, but is located in and entirely surrounded by adjacent San Mateo County.
• All SkyTeam, Oneworld and non-aligned international carriers operate from Boarding Area A.
• SFO was also one of the first U.S.
• 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.
• San Francisco International Airport handled 44,477,209 passengers last year.
• Since the mid-2000s recovery at SFO has been evident.
• Terminal 2, formerly known as the "Central Terminal," opened in 1954 as the main airport terminal.