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

About this route:

A direct, nonstop flight between Bert Mooney Airport (BTM), Butte, Montana, United States and City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom would travel a Great Circle distance of 4,219 miles (or 6,791 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 Bert Mooney 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 Bert Mooney 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 Bert Mooney Airport (BTM):

• Bert Mooney Airport covers 890 acres at an elevation of 5,550 feet.
• The furthest airport from Bert Mooney Airport (BTM) is Sir Gaëtan Duval Airport (RRG), which is located 10,611 miles (17,077 kilometers) away in Rodrigues Island, Mauritius.
• Bert Mooney Airport (BTM) has 2 runways.
• Because of Bert Mooney Airport's high elevation of 5,550 feet, planes must typically fly at a faster airspeed in order to takeoff or land at BTM. Combined with a high temperature, this could make BTM a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
• The closest airport to Bert Mooney Airport (BTM) is Dillon Airport (DLN), which is located 48 miles (78 kilometers) S of BTM.
• The airport name was changed in 1972 to honor Bert Mooney, an aviator from Butte who was the first to fly mail into Yellowstone National Park in 1935.
• The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service facility.Federal Aviation Administration records say the airport had 30,431 passenger boardings in calendar year 2008, 25,178 in 2009 and 25,433 in 2010.

Facts about City of Derry Airport (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.
• Passenger numbers in 2013 were 384,973, a 3.3% decrease compared with 2012.
• 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.
• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• 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.
• 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.
• 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.
• City of Derry Airport (LDY) currently has only 1 runway.
• City of Derry Airport handled 384,973 passengers last year.