Nonstop flight route between St Mary's, Isles of Scilly, United Kingdom and SeaTac (near Seattle and Tacoma), Washington, United States:

About this route:

A direct, nonstop flight between St Mary's Airport (ISC), St Mary's, Isles of Scilly, United Kingdom and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 4,707 miles (or 7,575 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 St Mary's 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 St Mary's 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 St Mary's Airport (ISC):

• On 2 May 1964, BEA replaced its Dragon Rapides on the Land's End route with a single Sikorsky S-61 helicopter, operated by BEA Helicopters.
• Because of St Mary's Airport's relatively low elevation of 116 feet, planes can take off or land at St Mary's 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 1984 Isles of Scilly Skybus started flights to St Mary's from Land's End, initially freight and charter.
• St Mary's Airport (ISC) has 2 runways.
• In February 2014, the Council of the Isles of Scilly approved a plan to share the management of St Mary's Airport with Westward Airways, who operate Land's End Airport.
• The closest airport to St Mary's Airport (ISC) is Tresco Heliport (TSO), which is located only 3 miles (5 kilometers) NW of ISC.
• The furthest airport from St Mary's Airport (ISC) is Dunedin International Airport (DUD), which is nearly antipodal to St Mary's Airport (meaning St Mary's Airport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,117 miles (19,501 kilometers) away in Dunedin, Otago, New Zealand.
• In addition to being known as "St Mary's Airport", other names for ISC include "Isles of Scilly Airport" and "Scilly Isles/St Mary's Airport".
• On 15 September 1937, Olley Air Service's subsidiary Channel Air Ferries started the first scheduled service between Land's End and St Mary's, flying de Havilland Dragons.
• St Mary's Airport handled 89,170 passengers last year.

Facts about Seattle–Tacoma International Airport (SEA):

• Seattle–Tacoma International Airport (SEA) has 3 runways.
• 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.
• 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.
• 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.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• In 2007 the airport, together with the University of Illinois Center of Excellence for Airport Technology, became the first airport to implement an avian radar system providing 24-hour monitoring of wildlife activity across the airfield.
• The two-story North Concourse added four new gate positions and a new wing 600 feet long and 30 feet wide.
• 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 South Satellite Terminal has reached its maximum capacity for handling international passengers in terms of immigration check stands as well as customs declaration.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".