Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Helsinki / Vantaa, Finland:

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Helsinki Airport (HEL), Helsinki / Vantaa, Finland would travel a Great Circle distance of 4,768 miles (or 7,673 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 Helsinki 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 Helsinki 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):

• 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.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• 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 airport has service to destinations throughout North America, Europe, the Middle East, and East Asia.
• The top five carriers at the airport in number of passengers carried in 2012 were Alaska Airlines, Horizon Air, Delta Air Lines, Southwest Airlines, and United Airlines.
• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• 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 airport is also served both by the King County Metro bus system and Sound Transit regional express buses.
• 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 (SEA) has 3 runways.
• 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 new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.

Facts about Helsinki Airport (HEL):

• The closest airport to Helsinki Airport (HEL) is Helsinki-Malmi Airport (HEM), which is located only 5 miles (8 kilometers) SSE of HEL.
• The airport's three runways provide a platform for future growth while the airport can accommodate wide-body aircraft such as the Airbus A340.
• The furthest airport from Helsinki Airport (HEL) is Chatham Islands (CHT), which is located 10,992 miles (17,689 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• Helsinki Airport (HEL) has 3 runways.
• The Aviapolis is a new international business park adjacent to the Helsinki airport area, already hosting the operations of numerous companies around the airport.
• Finnair's head office is located in Tietotie 11 on the grounds of Helsinki Airport.
• Because of Helsinki Airport's relatively low elevation of 179 feet, planes can take off or land at Helsinki 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 "Helsinki Airport", another name for HEL is "Helsinki-Vantaan lentoasemaHelsingfors-Vanda flygplats".
• Helsinki Airport handled 15,279,043 passengers last year.
• The construction of the Ring Rail Line rail link to the airport was started in May 2009, with an opening for traffic projected for mid-2015.
• The airport is nominally divided into 2 terminals, located 250 metres apart and linked by an internal pedestrian connection both airside and landside.
• Coach connections, daytime and overnight, to all parts of Finland are provided by Matkahuolto and ExpressBus.