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

About this route:

A direct, nonstop flight between St. Louis Regional Airport (ALN), Alton, Illinois, United States and City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom 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 St. Louis Regional Airport and City of Derry 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 St. Louis Regional Airport and City of Derry 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 St. Louis Regional Airport (ALN):

• 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 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.
• 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.
• St. Louis Regional Airport (ALN) has 2 runways.
• Today a fair amount of air traffic and the Direct TV blimp comes for Cardinals playoffs, as Lambert's airport cannot take the blimp.
• In the spring of 2004 the airport was at the center of a scandal.

Facts about City of Derry Airport (LDY):

• The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of 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 addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• 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.
• 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.
• Aer Arann operated services to Manchester and Birmingham for a short time.
• A major redevelopment programme was undertaken by the Council from 1989 to 1993 with grant aid from the European Regional Development Fund.
• 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.
• City of Derry Airport (LDY) currently has only 1 runway.
• City of Derry Airport handled 384,973 passengers last year.