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

About this route:

A direct, nonstop flight between Hatfield Aerodrome (HTF), Hatfield, Hertfordshire, England, United Kingdom and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 4,775 miles (or 7,685 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 Hatfield Aerodrome 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 Hatfield Aerodrome 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 Hatfield Aerodrome (HTF):

• The ICAO code, EGTH, has subsequently been reallocated to Old Warden Aerodrome in Bedfordshire.
• A hard runway was laid in 1947.
• In 1992, due to severe financial problems, British Aerospace announced the cessation of aircraft production at Hatfield from 1993.
• The full trail is around 4 km long and takes around 90 minutes to walk.
• The closest airport to Hatfield Aerodrome (HTF) is London Luton Airport (LTN), which is located only 9 miles (15 kilometers) NNW of HTF.
• Geoffrey de Havilland, pioneering aircraft designer and founder of the de Havilland Aircraft Company purchased some farmland close to Hatfield as his existing site at Stag Lane, Edgware was being encroached upon by expanding housing developments in the London suburbs.
• The furthest airport from Hatfield Aerodrome (HTF) is Chatham Islands (CHT), which is located 11,860 miles (19,086 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• Hatfield Aerodrome (HTF) has 2 runways.
• Because of Hatfield Aerodrome's relatively low elevation of 254 feet, planes can take off or land at Hatfield Aerodrome 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 146 first flew in 1981 and production of some components, final assembly and flight testing of the first two series of the aircraft was based at Hatfield during the early and mid 1980s.
• De Havilland had been developing and manufacturing propellers and piston engines in addition to airframes.

Facts about Seattle–Tacoma International Airport (SEA):

• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• The two-story North Concourse added four new gate positions and a new wing 600 feet long and 30 feet wide.
• Seattle's Central Link light-rail line serves the airport at the SeaTac/Airport Station, which opened on December 19, 2009.
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• 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.
• A new control tower was built beginning in 2001 and opened November 2004, at a cost of $26 million.
• 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 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.
• 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 airport has service to destinations throughout North America, Europe, the Middle East, and East Asia.
• In 2013, the airport served over 34.7 million passengers, making it the 15th-busiest airport in the United States.
• The Seattle–Tacoma International Airport, also known as Sea–Tac Airport or Sea–Tac /ˈsiːtæk/, is an American airport.
• Interstate 5 and its offshoot Interstate 405 intersect very close to the airport, and most people use private vehicles to arrive at the airport.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".