Nonstop flight route between St. Louis, Missouri, United States and Sion, Switzerland:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Sion Airport (SIR), Sion, Switzerland would travel a Great Circle distance of 4,677 miles (or 7,526 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 Lambert–St. Louis International Airport and Sion 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 Lambert–St. Louis International Airport and Sion 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 Lambert–St. Louis International Airport (STL):

• The April 1957 Official Airline Guide shows TWA with 44 weekday departures.
• Named for Albert Bond Lambert, an Olympic medalist and prominent St.
• The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
• Lambert again grew in importance for TWA after the airline declared bankruptcy in 1993 and moved its headquarters to St.
• Lambert–St. Louis International Airport (STL) has 4 runways.
• In May 2013, Moody's raised its rating on Lambert Airport's bonds to A3-stable outlook from Baa1 with a stable outlook.
• The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
• Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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.
• On July 16, 2003, AA announced it was significantly reducing its Lambert hub effective November 1, 2003, cutting it from 417 daily flights to 207, effective November 1, 2003.

Facts about Sion Airport (SIR):

• Sion Airport (SIR) has 2 runways.
• 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.
• In addition to being known as "Sion Airport", other names for SIR include "Aéroport de Sion" and "LSGS /LSMS".
• The closest airport to Sion Airport (SIR) is Aosta Valley Airport (AOT), which is located 33 miles (54 kilometers) S of SIR.