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

About this route:

A direct, nonstop flight between Roundup Airport (RPX), Roundup, Montana, United States and Perth Airport (PER), Perth, Western Australia, Australia would travel a Great Circle distance of 9,892 miles (or 15,919 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 Roundup Airport and Perth 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 Roundup Airport and Perth 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 Roundup Airport (RPX):

• The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of 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.

Facts about Perth Airport (PER):

• 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 also on this day that Qantas commenced its Wallaby service using the Constellation Charles Kingsford Smith" from Sydney to South Africa via Western Australia, the Cocos Islands, and Mauritius.
• The move was agreed to by the government of the day, as the larger types of aircraft of the day being operated by the two airlines could simply not be handled at Maylands, notwithstanding the small grass airfield, lack of passenger facilities, and approaches being difficult due to surrounding industrial infrastructure.
• The closest airport to Perth Airport (PER) is Jandakot Airport (JAD), which is located only 12 miles (19 kilometers) SSW of PER.
• 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.
• In the late 1980s the Federal Government, as a prelude to eventual privatisation, formed the Federal Airports Corporation.
• Perth Airport (PER) has 2 runways.
• Site selection and preparation of the original plans was undertaken by Mr N M Fricker of the Department of Civil Aviation.
• Passenger numbers have trebled in the past 10 years with more than 12.6 million people travelling through the airport in 2012.
• Perth Airport handled 13,664,394 passengers last year.