Nonstop flight route between Derry, Northern Ireland, United Kingdom and Salmon, Idaho, United States:

About this route:

A direct, nonstop flight between City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom and Lemhi County Airport (SMN), Salmon, Idaho, United States would travel a Great Circle distance of 4,306 miles (or 6,930 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 Lemhi County 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 Lemhi County 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):

• 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 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.
• 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 June 2010 it was announced that the Airport was in the final stages of discussion with the Balfour Beatty Group about a management contract, with the objective of bringing additional commercial experience and resources to the Airport for the economic benefit of the region and to reduce the subvention from the City Council.
• A major redevelopment programme was undertaken by the Council from 1989 to 1993 with grant aid from the European Regional Development Fund.
• In May 2006, the European Commission gave its approval for the British and Irish governments to invest €15 million in the airport.
• City of Derry Airport (LDY) currently has only 1 runway.
• City of Derry Airport handled 384,973 passengers last year.
• In January 2009 the council appointed Albert Harrison, the former head of Belfast International Airport, as the new manager of the airport.
• In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
• Eglinton Aerodrome, as it is known locally, has a CAA Ordinary Licence that allows flights for the public transport of passengers or for flying instruction as authorised by the licensee.
• 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.

Facts about Lemhi County Airport (SMN):

• Lemhi County Airport (SMN) currently has only 1 runway.
• The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
• Because of Lemhi County Airport's high elevation of 4,043 feet, planes must typically fly at a faster airspeed in order to takeoff or land at SMN. Combined with a high temperature, this could make SMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
• The furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.