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

About this route:

A direct, nonstop flight between City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 3,818 miles (or 6,145 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 City of Derry 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 City of Derry 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 City of Derry Airport (LDY):

• The decrease in operational hours at the airport as a direct consequence of the challenging economic conditions have caused problems for Eglinton Flying Club and the helicopter flight training facility who in turn have threatened to leave the airport if the decisions are not reversed.
• In mid-2009 work commenced on dualling the A2 from Maydown to Eglinton and the airport, which now provides a high speed dual carriageway connection to the city.
• The furthest airport from City of Derry Airport (LDY) is Ryan's Creek Aerodrome (SZS), which is located 11,838 miles (19,051 kilometers) away in Stewart Island, New Zealand.
• A major redevelopment programme was undertaken by the Council from 1989 to 1993 with grant aid from the European Regional Development Fund.
• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• City of Derry Airport (LDY) currently has only 1 runway.
• City of Derry Airport handled 384,973 passengers last year.
• 2010 saw the commencement of a new route to Faro with Ryanair, the airport's second scheduled international destination.
• Because of City of Derry Airport's relatively low elevation of 23 feet, planes can take off or land at City of Derry 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.
• As of April 2010, it has been reported that the airport has emerged from passenger recession, with passenger numbers released for February of the same year showing an increase over that of the same period for the year before.
• The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of LDY.

Facts about St. Louis Regional Airport (ALN):

• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• 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.
• 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.
• In the spring of 2004 the airport was at the center of a scandal.
• 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.