Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Derry, Northern Ireland, United Kingdom:

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom would travel a Great Circle distance of 4,419 miles (or 7,111 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 City of Derry 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 City of Derry 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):

• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• 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 three parallel runways run nearly north–south, west of the passenger terminal, and are 8,500 to 11,900 feet long.
• 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 South Satellite Terminal has reached its maximum capacity for handling international passengers in terms of immigration check stands as well as customs declaration.
• The airport has a Central Terminal building, which was renovated and expanded in 2003.
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.
• 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.

Facts about City of Derry Airport (LDY):

• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• City of Derry Airport (LDY) currently has only 1 runway.
• Because of City of Derry Airport's relatively low elevation of 23 feet, planes can take off or land at City of Derry 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 Belfast to Derry single track railway line of Northern Ireland Railways passes close to but not across the tip of the runway at the North Eastern end.
• As of April 2010, it has been reported that the airport has emerged from passenger recession, with passenger numbers released for February of the same year showing an increase over that of the same period for the year before.
• Aer Arann operated services to Manchester and Birmingham for a short time.
• The airport is to develop further Ryanair routes from the airport to European cities such as Barcelona, Paris, Frankfurt and Milan.
• The furthest airport from City of Derry Airport (LDY) is Ryan's Creek Aerodrome (SZS), which is located 11,838 miles (19,051 kilometers) away in Stewart Island, New Zealand.
• City of Derry Airport handled 384,973 passengers last year.
• In mid-2009 work commenced on dualling the A2 from Maydown to Eglinton and the airport, which now provides a high speed dual carriageway connection to the city.
• The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of LDY.