Nonstop flight route between Dublin, Ireland and Roundup, Montana, United States:

About this route:

A direct, nonstop flight between Dublin Airport (DUB), Dublin, Ireland and Roundup Airport (RPX), Roundup, Montana, United States would travel a Great Circle distance of 4,168 miles (or 6,708 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 Dublin Airport and Roundup 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 Dublin Airport and Roundup 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 Dublin Airport (DUB):

• Dublin Airport (DUB) has 2 runways.
• The airport saw significant declines in traffic in 2009 and 2010, although since 2011 the airport has seen an uptick in traffic.
• In addition to being known as "Dublin Airport", another name for DUB is "Aerfort Bhaile Átha Cliath".
• The DAA has its own branch of the Airport Police Service which is mandated to provide aviation and general policing at the airport.
• United States border preclearance services are available at the airport for US-bound passengers, making Dublin one of only two European airports with this facility along with Shannon.
• Upon the outbreak of World War II, services were severely restricted at Dublin Airport until late 1945 and the only international scheduled route operated during this time was by Aer Lingus to Liverpool.
• The closest airport to Dublin Airport (DUB) is Kilkenny Airport (KKY), which is located 68 miles (110 kilometers) SW of DUB.
• Because of Dublin Airport's relatively low elevation of 242 feet, planes can take off or land at Dublin 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.
• Finally, the demand from Ireland's migrant workers, principally those from Eastern Europe, has resulted in a large number of new routes opening to destinations in the European Union accession states.
• The furthest airport from Dublin Airport (DUB) is Ryan's Creek Aerodrome (SZS), which is located 11,922 miles (19,187 kilometers) away in Stewart Island, New Zealand.
• Dublin Airport handled 20,166,783 passengers last year.
• In the mid twentieth century, the Irish government introduced a rule stating that all air traffic between Ireland and the United States must transit through Shannon airport.

Facts about Roundup Airport (RPX):

• The furthest airport from Roundup Airport (RPX) is Sir Gaëtan Duval Airport (RRG), which is located 10,535 miles (16,954 kilometers) away in Rodrigues Island, Mauritius.
• Roundup Airport (RPX) has 2 runways.
• The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.