Nonstop flight route between Sion, Switzerland and between Baltimore, Maryland and Washington, D.C., United States:

About this route:

A direct, nonstop flight between Sion Airport (SIR), Sion, Switzerland and Baltimore/Washington International Thurgood Marshall Airport (BWI), between Baltimore, Maryland and Washington, D.C., United States would travel a Great Circle distance of 4,090 miles (or 6,582 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 Baltimore/Washington International Thurgood Marshall 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 Baltimore/Washington International Thurgood Marshall 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):

• 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.

Facts about Baltimore/Washington International Thurgood Marshall Airport (BWI):

• The furthest airport from Baltimore/Washington International Thurgood Marshall Airport (BWI) is Margaret River Airport (MGV), which is located 11,691 miles (18,814 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Baltimore/Washington International Thurgood Marshall Airport (BWI) is Tipton Airport (FME), which is located only 8 miles (13 kilometers) SW of BWI.
• BWI is a focus city for Southwest Airlines, and is the busiest airport in the Baltimore–Washington Metropolitan Area.
• Baltimore/Washington International Thurgood Marshall Airport handled 22,391,785 passengers last year.
• Because of Baltimore/Washington International Thurgood Marshall Airport's relatively low elevation of 146 feet, planes can take off or land at Baltimore/Washington International Thurgood Marshall 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 airport's cargo concourse covers a 395,000 sq ft area.
• The Federal Aviation Administration is currently in the process of designing a new air traffic control tower that will replace the current tower.
• Passenger van service to and from the Eastern Shore and Western Maryland is available through BayRunner Shuttle with services to and from BWI to Kent Island, Easton, Cambridge, Salisbury, Ocean Pines, and Ocean City and Grantsville, Frostburg, Cumberland, Hancock, Hagerstown, and Frederick.
• Baltimore/Washington International Thurgood Marshall Airport is an international airport serving the Baltimore–Washington Metropolitan Area in the United States.
• Baltimore/Washington International Thurgood Marshall Airport (BWI) has 4 runways.
• To accommodate Southwest's extensive presence at the airport, in 2005 Concourses A and B were expanded, renovated, and integrated with one another to house all of that airline's operations there.