Nonstop flight route between Seattle, Washington, United States and Mascot (near Sydney), Australia:

About this route:

A direct, nonstop flight between King County International Airport (BFI), Seattle, Washington, United States and Sydney (Kingsford Smith) Airport (SYD), Mascot (near Sydney), Australia would travel a Great Circle distance of 7,753 miles (or 12,477 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 King County International Airport and Sydney (Kingsford Smith) 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 King County International Airport and Sydney (Kingsford Smith) 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 King County International Airport (BFI):

• The furthest airport from King County International Airport (BFI) is Tôlanaro Airport (FTU), which is located 10,775 miles (17,341 kilometers) away in Tôlanaro, Madagascar.
• In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
• The Boeing Company has facilities at the airport.
• It is in the National Plan of Integrated Airport Systems for 2011–2015, which called it a primary commercial service airport.Federal Aviation Administration records say the airport had 34,597 passenger boardings in calendar year 2008, 35,863 in 2009 and 33,656 in 2010.
• King County International Airport (BFI) has 2 runways.
• The closest airport to King County International Airport (BFI) is Renton Municipal Airport (RNT), which is located only 5 miles (8 kilometers) ESE of BFI.
• Except for the World War II period, when it was taken over by the U.S.
• Boeing Field as seen from the Air Traffic Control Tower
• Because of King County International Airport's relatively low elevation of 21 feet, planes can take off or land at King County 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 airport's property is mostly in Seattle just south of Georgetown, with its southern tip extending into Tukwila.
• Boeing Field had scheduled passenger flights on West Coast Airlines Douglas DC-9s and Fairchild F-27s to Idaho, Oregon, Washington, northern California, western Montana, northern Utah and to Calgary.

Facts about Sydney (Kingsford Smith) Airport (SYD):

• The furthest airport from Sydney (Kingsford Smith) Airport (SYD) is Santa Maria Airport (SMA), which is nearly antipodal to Sydney (Kingsford Smith) Airport (meaning Sydney (Kingsford Smith) Airport is almost on the exact opposite side of the Earth from Santa Maria Airport), and is located 12,144 miles (19,543 kilometers) away in Santa Maria, Portugal.
• In addition to being known as "Sydney (Kingsford Smith) Airport", another name for SYD is "Kingsford-Smith Airport".
• Because of Sydney (Kingsford Smith) Airport's relatively low elevation of 21 feet, planes can take off or land at Sydney (Kingsford Smith) 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.
• In 1921 the federal government purchased 161 acres in Mascot for the purpose of creating a public airfield.
• Sydney (Kingsford Smith) Airport (SYD) has 3 runways.
• Sydney Airport is one of the oldest continuously operated airports in the world, and the busiest airport in Australia, handling 35,630,549 passengers in 2011 and 326,686 aircraftmovements in 2013.
• Since the international terminal's original completion, it has undergone two large expansions.
• The area that the airport was situated was originally a bullock paddock.Nigel Love, a former wartime pilot, was looking into the possibilities for aviation in Australia.
• The closest airport to Sydney (Kingsford Smith) Airport (SYD) is Bankstown Airport (BWU), which is located only 11 miles (18 kilometers) W of SYD.
• Terminal 2, located in the airport's north-eastern section, was the former home of Ansett Australia's domestic operations.
• The local, state and federal governments have investigated the viability of building a second major airport in Sydney since the 1940s.