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):

• 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.
• The recently completed runway safety zone extension and apron works has allowed the CAA to lift the capacity restriction on aircraft operating out of the airport.
• The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of LDY.
• City of Derry Airport handled 384,973 passengers last year.
• On 9 October 2009, Derry City Council who own and operate the airport began the process which will lead to the privatisation of the facility.
• In May 2006, the European Commission gave its approval for the British and Irish governments to invest €15 million in the airport.
• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• 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.
• Aer Arann operated services to Manchester and Birmingham for a short time.
• Ryanair also discontinued the Bristol route and changed its Derry–East Midlands route to Derry–Birmingham announcing new flights to London Luton and the airport's first scheduled international service to Alicante which commenced in June 2009.
• City of Derry Airport (LDY) currently has only 1 runway.
• 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.

Facts about Great Falls International Airport (GTF):

• Great Falls has had airline flights since the 1930s.
• In early 2012 Frontier Airlines announced new flights to Great Falls from the Denver hub.
• The airport covers 2,113 acres at an elevation of 3,680 feet.
• In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
• Great Falls International Airport is a public/military airport in city limits three miles southwest of central Great Falls in Cascade County, Montana.
• Great Falls International Airport (GTF) has 3 runways.
• 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 National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 143,811 passenger boardings in calendar year 2008, 146,438 in 2009 and 155,204 in 2010.
• 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.
• In 1975 the terminal was replaced and all runways, aprons, and taxiways updated.