Nonstop flight route between London, England, United Kingdom and SeaTac (near Seattle and Tacoma), Washington, United States:

About this route:

A direct, nonstop flight between London Heathrow Airport (LHR), London, England, United Kingdom and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 4,786 miles (or 7,702 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 London Heathrow Airport and Seattle–Tacoma 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 London Heathrow Airport and Seattle–Tacoma 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 London Heathrow Airport (LHR):

• Because of London Heathrow Airport's relatively low elevation of 83 feet, planes can take off or land at London Heathrow 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.
• London Heathrow Airport (LHR) has 2 runways.
• The closest airport to London Heathrow Airport (LHR) is RAF Northolt (NHT), which is located only 6 miles (9 kilometers) NNE of LHR.
• Redevelopment of Terminal 3's forecourt through the addition of a new four lane drop-off area and a large pedestrianised plaza, complete with canopy to the front of the terminal building, was completed in 2007.
• Until 2008, air traffic between Heathrow and the United States was strictly governed by the countries' bilateral Bermuda II treaty.
• Heathrow Airport started in 1929 as a small airfield on land south-east of the hamlet of Heathrow from which the airport takes its name.
• The furthest airport from London Heathrow Airport (LHR) is Chatham Islands (CHT), which is located 11,875 miles (19,112 kilometers) away in Waitangi, Chatham Islands, New Zealand.

Facts about Seattle–Tacoma International Airport (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.
• 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.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• 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.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• 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.
• Citing increased landing fees and other costs due to the aforementioned work at the airport, Southwest Airlines threatened in 2005 to move to nearby Boeing Field.
• 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 facility was originally scheduled to open in Spring 2011.
• The airport has service to destinations throughout North America, Europe, the Middle East, and East Asia.
• Seattle–Tacoma International Airport (SEA) has 3 runways.