Nonstop flight route between Shannon (County Clare), Ireland and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Shannon Airport (SNN), Shannon (County Clare), Ireland and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 3,807 miles (or 6,126 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 Shannon 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 Shannon 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 Shannon Airport (SNN):

• The closest airport to Shannon Airport (SNN) is Inisheer Aerodrome (INQ), which is located 35 miles (56 kilometers) NW of SNN.
• In addition to being known as "Shannon Airport", another name for SNN is "Aerfort na Sionainne".
• The first passengers through the newly autonomous airport arrived on the Aer Lingus EI-110 flight from JFK at 5:08 am on 1 January 2013.
• Shannon Airport handled 1,400,032 passengers last year.
• It has been hinted that a route to Amsterdam Airport Schiphol or Frankfurt Airport could commence in 2015.
• Shannon Airport (SNN) currently has only 1 runway.
• The furthest airport from Shannon Airport (SNN) is Ryan's Creek Aerodrome (SZS), which is nearly antipodal to Shannon Airport (meaning Shannon Airport is almost on the exact opposite side of the Earth from Ryan's Creek Aerodrome), and is located 12,015 miles (19,336 kilometers) away in Stewart Island, New Zealand.
• In March 2013, the new company appointed Neil Pakey as its first CEO.
• In 1969, it was announced that a new government agency, Aer Rianta, would be given responsibility for Shannon Airport.
• In December 2012, it was announced that Shannon Airport would separate from the Dublin Airport Authority, who still own Dublin and Cork airports.
• Because of Shannon Airport's relatively low elevation of 46 feet, planes can take off or land at Shannon 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.
• Shannon continued to expand during the Celtic Tiger years with many services operated to the US and Canada.
• In 1936, the Government of Ireland confirmed that it would develop a 3.1 km2 site at Rineanna for the country's first transatlantic airport.

Facts about St. Louis Regional Airport (ALN):

• 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.
• In the spring of 2004 the airport was at the center of a scandal.
• 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.
• St. Louis Regional Airport (ALN) has 2 runways.
• 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.
• West Star Aviation is the largest fixed base operations company at the airport.