Nonstop flight route between Hanoi, Vietnam and Seattle, Washington, United States:

About this route:

A direct, nonstop flight between Nội Bài International Airport (HAN), Hanoi, Vietnam and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 6,828 miles (or 10,988 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 Nội Bài International Airport and King County 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 Nội Bài International Airport and King County 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 Nội Bài International Airport (HAN):

• In addition to being known as "Nội Bài International Airport", another name for HAN is "Sân bay Quốc tế Nội Bài".
• As of December 2011, there was only one passenger terminal at Nội Bài Airport.
• The furthest airport from Nội Bài International Airport (HAN) is Diego Aracena International Airport (IQQ), which is nearly antipodal to Nội Bài International Airport (meaning Nội Bài International Airport is almost on the exact opposite side of the Earth from Diego Aracena International Airport), and is located 12,174 miles (19,591 kilometers) away in Iquique, Chile.
• The closest airport to Nội Bài International Airport (HAN) is Cat Bi International Airport (HPH), which is located 65 miles (105 kilometers) ESE of HAN.
• Because of Nội Bài International Airport's relatively low elevation of 39 feet, planes can take off or land at Nội Bài 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 distance between the two runways is only 250 metres, so the airport has a maximum capacity of 10 million passengers a year in accordance with International Civil Aviation Organisation safety regulations.
• Nội Bài International Airport (HAN) has 2 runways.

Facts about King County International Airport (BFI):

• Boeing Field/King County International Airport covers 634 acres at an elevation of 21 feet above mean sea level.
• 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.
• The initial assembly of the 737 was at Boeing Field in the 1960s because the factory in Renton was at capacity building the 707 and 727.
• King County International Airport (BFI) has 2 runways.
• 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.
• 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.
• 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.
• In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".