Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Hanoi, Vietnam:

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Nội Bài International Airport (HAN), Hanoi, Vietnam would travel a Great Circle distance of 6,831 miles (or 10,994 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 Nội Bài 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 Seattle–Tacoma International Airport and Nội Bài 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 Seattle–Tacoma International Airport (SEA):

• The Seattle–Tacoma International Airport, also known as Sea–Tac Airport or Sea–Tac /ˈsiːtæk/, is an American airport.
• The two-story North Concourse added four new gate positions and a new wing 600 feet long and 30 feet wide.
• The top five carriers at the airport in number of passengers carried in 2012 were Alaska Airlines, Horizon Air, Delta Air Lines, Southwest Airlines, and United Airlines.
• Interstate 5 and its offshoot Interstate 405 intersect very close to the airport, and most people use private vehicles to arrive at the airport.
• The North Satellite Terminal has only received limited upgrades and is in need of modernization.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• The three parallel runways run nearly north–south, west of the passenger terminal, and are 8,500 to 11,900 feet long.
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• 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.
• 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.
• 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.

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".
• 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.
• In 2010, the airport received approximately 9.5 million passengers, which made it overloaded, and accounted for one-third of international departures and arrivals at Vietnam's three international airports.
• Nội Bài International Airport (HAN) has 2 runways.
• The airport has a new 3,800-meter paved runway and an older 3,200-meter paved runway
• 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.
• At 650 ha, Noi Bai is the second-largest airport in Vietnam, behind the 800 ha Tan Son Nhat International 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.