Nonstop flight route between Derry, Northern Ireland, United Kingdom and Great Falls, Montana, United States:

About this route:

A direct, nonstop flight between City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom and Great Falls International Airport (GTF), Great Falls, Montana, United States would travel a Great Circle distance of 4,104 miles (or 6,605 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 Great Falls International 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 Great Falls International 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):

• Aer Arann operated services to Manchester and Birmingham for a short time.
• 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 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.
• 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.
• A report by Ilex-URC in September 2010, pointed out that there is intentions to grow and increase the number of scheduled routes out of the airport from 7 as of 2010, to 10 by 2015, and 15 by 2020.
• In April 2009 the council issued tender documents for a multi-million pound expansion of the terminal to improve passenger flow and meet current EU customs and immigration regulations.
• The airport is to develop further Ryanair routes from the airport to European cities such as Barcelona, Paris, Frankfurt and Milan.
• City of Derry Airport handled 384,973 passengers last year.
• 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.

Facts about Great Falls International Airport (GTF):

• AvMax, a Calgary-based large jet maintenance and repair business, opened a large operation at GTF in 2006.
• The furthest airport from Great Falls International Airport (GTF) is Sir Gaëtan Duval Airport (RRG), which is located 10,498 miles (16,896 kilometers) away in Rodrigues Island, Mauritius.
• The closest airport to Great Falls International Airport (GTF) is Malmstrom Air Force Base (GFA), which is located only 9 miles (14 kilometers) E of GTF.
• Malmstrom Air Force Base, home of the 341st Missile Wing of the Air Force Global Strike Command, is 10 miles east of GTF, on the east side of Great Falls.
• Great Falls has had airline flights since the 1930s.
• In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
• Great Falls International Airport (GTF) has 3 runways.
• In 1975 the terminal was replaced and all runways, aprons, and taxiways updated.