Nonstop flight route between Derry, Northern Ireland, United Kingdom and Troy, Alabama, United States:

About this route:

A direct, nonstop flight between City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom and Troy Municipal Airport (TOI), Troy, Alabama, United States would travel a Great Circle distance of 4,022 miles (or 6,473 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 Troy Municipal 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 Troy Municipal 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):

• City of Derry Airport (LDY) currently has only 1 runway.
• City of Derry Airport handled 384,973 passengers last year.
• 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.
• During 1998 and 1999 safety improvements were undertaken at the airport as a matter of priority.
• 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.
• At the end of 2008, British Airways, operated by Loganair as a franchise agreement, ceased the Glasgow International route which had operated for 30 years, following the loss in July 2008 of their public service obligation route to Dublin.
• 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.
• Passenger numbers in 2013 were 384,973, a 3.3% decrease compared with 2012.
• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• The Belfast to Derry single track railway line of Northern Ireland Railways passes close to but not across the tip of the runway at the North Eastern end.

Facts about Troy Municipal Airport (TOI):

• Troy Municipal Airport (TOI) has 2 runways.
• The airfield was turned over to civil control though the War Assets Administration.
• The furthest airport from Troy Municipal Airport (TOI) is Margaret River Airport (MGV), which is located 11,206 miles (18,034 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Troy Municipal Airport (TOI) is Montgomery Regional Airport (MGM), which is located 38 miles (61 kilometers) NW of TOI.
• Because of Troy Municipal Airport's relatively low elevation of 398 feet, planes can take off or land at Troy Municipal 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.