Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Dunhuang, Gansu, China:

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Dunhuang Airport (DNH), Dunhuang, Gansu, China would travel a Great Circle distance of 5,969 miles (or 9,606 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 Seattle–Tacoma International Airport and Dunhuang 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 Seattle–Tacoma International Airport and Dunhuang 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 Seattle–Tacoma International Airport (SEA):

• Seattle–Tacoma International Airport (SEA) has 3 runways.
• Starting in the late 1980s, the Port of Seattle and a council representing local county governments considered the future of air traffic in the region and predicted that airport could reach capacity by 2000.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• A new control tower was built beginning in 2001 and opened November 2004, at a cost of $26 million.
• The April 1957 OAG shows 216 departures a week on United, 80 Northwest, 35 Western, 21 Trans-Canada, 20 Pan Am, 20 Pacific Northern, and 10 Alaska.
• The Seattle–Tacoma International Airport, also known as Sea–Tac Airport or Sea–Tac /ˈsiːtæk/, is an American airport.
• The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.
• There is also a scheduled bus service to downtown Vancouver, Canada, through Quick Shuttle, with other pick-up stops at downtown Seattle, Bellingham International Airport, and drop-off stops just inside the Canadian–U.S.
• Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma 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.
• Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.
• The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• In 2013, the airport served over 34.7 million passengers, making it the 15th-busiest airport in the United States.

Facts about Dunhuang Airport (DNH):

• The closest airport to Dunhuang Airport (DNH) is Jiayuguan Airport (JGN), which is located 188 miles (303 kilometers) E of DNH.
• The furthest airport from Dunhuang Airport (DNH) is Pupelde Airfield (ZUD), which is located 11,831 miles (19,041 kilometers) away in Ancud, Los Lagos Region, Chile.
• In addition to being known as "Dunhuang Airport", other names for DNH include "敦煌机场" and "Dūnhuáng Jīchǎng".