Nonstop flight route between St. Louis, Missouri, United States and Belfast, Northern Ireland, United Kingdom:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Belfast International Airport (BFS), Belfast, Northern Ireland, United Kingdom would travel a Great Circle distance of 3,882 miles (or 6,247 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 Lambert–St. Louis International Airport and Belfast 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 Lambert–St. Louis International Airport and Belfast 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 Lambert–St. Louis International Airport (STL):

• Lambert–St. Louis International Airport (STL) has 4 runways.
• During 2008, Lambert's position as an American Airlines hub faced further pressure due to increased fuel costs and softened demand because of a depressed economy.
• The airport grew from a balloon launching base, Kinloch Field, part of the 1890s Kinloch Park suburban development.
• The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
• Ozark Airlines established its only hub at Lambert in the late 1950s.
• The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
• By September 2002, Lambert's passenger traffic had declined by 16.9% from before the terrorist attacks a year earlier, which was the 8th biggest percentage drop of the major US airports.
• Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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 Belfast International Airport (BFS):

• The furthest airport from Belfast International Airport (BFS) is Ryan's Creek Aerodrome (SZS), which is located 11,847 miles (19,065 kilometers) away in Stewart Island, New Zealand.
• Belfast International has a CAA Public Use Aerodrome Licence that allows flights for the public transport of passengers or for flying instruction.
• Belfast International Airport (BFS) has 2 runways.
• Despite these additional flights, passengers at Belfast International did not rise beyond 6 million in 2008 as some had predicted but in fact fell by 10,000 passengers to 5.2 million.
• In addition to being known as "Belfast International Airport", another name for BFS is "Belfast/Aldergrove Airport".
• Around 4 million passengers travelled through the airport in 2013, a 6.7% decrease on 2012.
• Because of Belfast International Airport's relatively low elevation of 268 feet, planes can take off or land at Belfast 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 lies within the parish of Killead, between the small villages of Killead and Aldergrove.
• In 1971 Northern Ireland Airports Limited was formed to operate and develop the airport and its facilities.
• Belfast International Airport handled 4,023,336 passengers last year.
• The closest airport to Belfast International Airport (BFS) is George Best Belfast City Airport (BHD), which is located only 14 miles (23 kilometers) E of BFS.
• In 1983 the airport, renamed Belfast International, was regularly accommodating the largest civil aircraft in service, and with the installation of new technology was capable of all weather operations.