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 (BFS) has 2 runways.
• In 2005 Continental Airlines launched the first ever direct scheduled service to Newark, and direct scheduled services were later introduced to Vancouver with Zoom Airlines but have now ceased following the carrier's demise in August 2008.
• Civil traffic began in 1922 when flights were conducted flying newspapers from Chester, and a regular civil air service started in 1933.
• In addition to being known as "Belfast International Airport", another name for BFS is "Belfast/Aldergrove Airport".
• Belfast International Airport handled 4,023,336 passengers last year.
• 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.
• In 1998 EasyJet started operations from the airport with flights to London Luton.
• 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.
• 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.
• One of the outcomes of the wartime airfield construction programme was the building of Nutts Corner Airport, just 3 mi from Aldergrove.

Facts about Sidney-Richland Municipal Airport (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.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• 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.