Nonstop flight route between Sidney, Montana, United States and Cairns, Queensland, Australia:

About this route:

A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Cairns Airport (CNS), Cairns, Queensland, Australia would travel a Great Circle distance of 8,003 miles (or 12,879 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 Sidney-Richland Municipal Airport and Cairns 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 Sidney-Richland Municipal Airport and Cairns 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 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.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• Sidney-Richland Municipal Airport covers an area of 335 acres at an elevation of 1,985 feet above mean sea level.
• 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.

Facts about Cairns Airport (CNS):

• The airport has a single runway which is 3,156 m long.
• Cairns Airport (CNS) currently has only 1 runway.
• Cairns Airport handled 3,848,728 passengers last year.
• Cairns Airport goes back to 1928 when Tom McDonald started flying his de Havilland Gipsy Moth off a sand ridge near the present airport.
• During the 1970s, Australia's two domestic airlines Trans Australia Airlines and Ansett provided regular scheduled services to most Australian capital cities and also Papua New Guinea, while in 1975 Air Niugini became the first international airline to commence flights out of Cairns, to Port Moresby in Papua New Guinea.
• Short-term and long-term parking, including a covered car park and parking for people with a disability are located within the public carparks adjacent to both the Domestic and International Terminals.
• The furthest airport from Cairns Airport (CNS) is Agostinho Neto Airport (NTO), which is located 11,832 miles (19,041 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
• The closest airport to Cairns Airport (CNS) is Mareeba Airfield (MRG), which is located 26 miles (41 kilometers) WSW of CNS.
• Because of Cairns Airport's relatively low elevation of 10 feet, planes can take off or land at Cairns 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.