Nonstop flight route between Belfast, Northern Ireland, United Kingdom and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Belfast International Airport (BFS), Belfast, Northern Ireland, United Kingdom and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 3,863 miles (or 6,217 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 Belfast International Airport and St. Louis Regional 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 Belfast International Airport and St. Louis Regional 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 Belfast International Airport (BFS):

• 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.
• On 17 and 18 June 2013 the leaders of the G8 countries met at the Lough Erne resort and a number of special aircraft movements and heightened security were in evidence at the airport.
• Between 2006 - 2008, both easyJet and Aer Lingus established a number of new routes for Belfast including Berlin, Budapest, Prague, Rome, Munich and Venice, all of which were eventually scrapped.
• Belfast International Airport (BFS) has 2 runways.
• In addition to being known as "Belfast International Airport", another name for BFS is "Belfast/Aldergrove Airport".
• The site for the airport was established in 1917 when it was selected to be a Royal Flying Corps training establishment during the First World War.
• 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.
• Belfast International Airport handled 4,023,336 passengers last year.
• In 2005 Continental Airlines launched the first ever direct scheduled service to Newark, and direct scheduled services were later introduced to Vancouver with Zoom Airlines but have now ceased following the carrier's demise in August 2008.
• In 1971 Northern Ireland Airports Limited was formed to operate and develop the airport and its facilities.
• 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.

Facts about St. Louis Regional Airport (ALN):

• Civic Memorial Airport opened in 1946 and received its current name in 1984.
• St. Louis Regional Airport (ALN) has 2 runways.
• Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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 furthest airport from St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
• The 2,250 acres airfield sits at 544 ft MSL.
• The closest airport to St. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.
• West Star Aviation is the largest fixed base operations company at the airport.