Nonstop flight route between Salmon, Idaho, United States and Perth, Western Australia, Australia:

About this route:

A direct, nonstop flight between Lemhi County Airport (SMN), Salmon, Idaho, United States and Perth Airport (PER), Perth, Western Australia, Australia would travel a Great Circle distance of 9,642 miles (or 15,517 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 Lemhi County 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 Lemhi County 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 Lemhi County Airport (SMN):

• The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
• Lemhi County Airport (SMN) currently has only 1 runway.
• The furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.
• Because of Lemhi County Airport's high elevation of 4,043 feet, planes must typically fly at a faster airspeed in order to takeoff or land at SMN. Combined with a high temperature, this could make SMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.

Facts about Perth Airport (PER):

• —Text of roadside plaque in memory of John Scott.
• In the late 1980s the Federal Government, as a prelude to eventual privatisation, formed the Federal Airports Corporation.
• Towards the mid-1950s, airline travel was still only being used by a small percentage of the population.
• Perth Airport (PER) has 2 runways.
• Full civilian operations at the Guildford Aerodrome commenced in 1944.
• The domestic and international terminals are located separately, 11 km apart, and connected by a road – Dunreath Drive – an internal road connection within the airport boundaries.
• 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.
• The closest airport to Perth Airport (PER) is Jandakot Airport (JAD), which is located only 12 miles (19 kilometers) SSW of PER.
• Perth Airport handled 13,664,394 passengers last year.
• 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.