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

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Cardiff Airport (CWL), Cardiff, Wales, United Kingdom would travel a Great Circle distance of 4,712 miles (or 7,584 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 Cardiff 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 Cardiff 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 (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.
• 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.
• 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.
• A recurring problem at the airport is misidentification of the westernmost taxiway, Taxiway Tango, as a runway.
• There is also a scheduled bus service to downtown Vancouver, Canada, through Quick Shuttle, with other pick-up stops at downtown Seattle, Bellingham International Airport, and drop-off stops just inside the Canadian–U.S.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• 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.
• 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.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".

Facts about Cardiff Airport (CWL):

• Cardiff Airport (CWL) currently has only 1 runway.
• Cardiff Airport is an international airport owned by the Welsh Government, serving Cardiff and the rest of South, Mid and West Wales.
• In addition to being known as "Cardiff Airport", another name for CWL is "Maes Awyr Caerdydd".
• Also in 1952 Aer Lingus started a service to Dublin.
• Cardiff Airport has also had several problems with wild fly-grazing horses around the airfield and the Redwings Sanctuary in Norfolk were needed to assist in the rescue of 23 unclaimed horses that had been left on the site.
• The closest airport to Cardiff Airport (CWL) is MoD St Athan (DGX), which is located only 4 miles (6 kilometers) W of CWL.
• Because of Cardiff Airport's relatively low elevation of 220 feet, planes can take off or land at Cardiff 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.
• Cardiff Airport handled 1,072,062 passengers last year.
• The furthest airport from Cardiff Airport (CWL) is Dunedin International Airport (DUD), which is located 11,958 miles (19,244 kilometers) away in Dunedin, Otago, New Zealand.
• The airport was the main base for three local airlines.
• On 16 May 2012, it was announced that airport Managing Director, Patrick Duffy, had left his position amid mounting pressure from the Welsh Government on the airport owners Abertis to improve the state of the airport and improve the services it offers, or sell the facility to an investor in a proposed public-private partnership.