Nonstop flight route between Belfast, Northern Ireland, United Kingdom and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between Belfast International Airport (BFS), Belfast, Northern Ireland, United Kingdom and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 3,916 miles (or 6,302 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 Belfast International Airport and Sidney-Richland 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 Belfast International Airport and Sidney-Richland 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 Belfast International Airport (BFS):

• The furthest airport from Belfast International Airport (BFS) is Ryan's Creek Aerodrome (SZS), which is located 11,847 miles (19,065 kilometers) away in Stewart Island, New Zealand.
• Belfast International Airport handled 4,023,336 passengers last year.
• The airport lies within the parish of Killead, between the small villages of Killead and Aldergrove.
• Despite these additional flights, passengers at Belfast International did not rise beyond 6 million in 2008 as some had predicted but in fact fell by 10,000 passengers to 5.2 million.
• In 1983 the airport, renamed Belfast International, was regularly accommodating the largest civil aircraft in service, and with the installation of new technology was capable of all weather operations.
• Because of Belfast International Airport's relatively low elevation of 268 feet, planes can take off or land at Belfast International 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 closest airport to Belfast International Airport (BFS) is George Best Belfast City Airport (BHD), which is located only 14 miles (23 kilometers) E of BFS.
• Belfast International Airport (BFS) has 2 runways.
• In addition to being known as "Belfast International Airport", another name for BFS is "Belfast/Aldergrove Airport".
• During the Second World War, Aldergrove remained an RAF base particularly for the Coastal Command.

Facts about Sidney-Richland Municipal Airport (SDY):

• Sidney-Richland Municipal Airport is a public use airport located one nautical mile west of the central business district of Sidney, a city in Richland County, Montana, United States.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• As per the Federal Aviation Administration, this airport had 2,031 passenger boardings in calendar year 2008, 2,766 in 2009, and 3,659 in 2010.
• The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
• The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
• Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.