Nonstop flight route between Perth, Western Australia, Australia and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between Perth Airport (PER), Perth, Western Australia, Australia and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 10,079 miles (or 16,220 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 Perth 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 Perth 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 Perth Airport (PER):

• Perth Airport handled 13,664,394 passengers last year.
• Perth Airport (PER) has 2 runways.
• From 1962 onwards, both the domestic and international passenger operations at the airport were provided by a single terminal.
• In the late 1980s the Federal Government, as a prelude to eventual privatisation, formed the Federal Airports Corporation.
• The closest airport to Perth Airport (PER) is Jandakot Airport (JAD), which is located only 12 miles (19 kilometers) SSW of PER.
• In November 1980, the Federal Transport Minister, Ralph Hunt, announced that a new international terminal would be built in Perth at a cost of A$26 million.
• The furthest airport from Perth Airport (PER) is L.F. Wade International Airport (BDA), which is nearly antipodal to Perth Airport (meaning Perth Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,389 miles (19,938 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
• Even before civil aviation operations could commence at the new site, the onset of World War II saw the facility being redesigned for military purposes as a temporary base for the Royal Australian Air Force and United States Navy, known as "RAAF Station Guildford", primarily to supplement RAAF Base Pearce.Royal Australian Air Force No.
• Because of Perth Airport's relatively low elevation of 67 feet, planes can take off or land at Perth 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.
• It was at this time the airport began to experience the full effects of the jet age.
• The two domestic terminals are side by side and about 12 km from the Perth CBD, while the international terminal is 17 km from Perth.

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.
• 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.