Nonstop flight route between Seletar, Singapore and Challis, Idaho, United States:

About this route:

A direct, nonstop flight between Seletar Airport (XSP), Seletar, Singapore and Challis Airport (CHL), Challis, Idaho, United States would travel a Great Circle distance of 8,494 miles (or 13,669 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 Seletar Airport and Challis 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 Seletar Airport and Challis 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 Seletar Airport (XSP):

• In addition to being known as "Seletar Airport", other names for XSP include "实里达机场" and "செலட்டர் வான்முகம்".
• In December 1966, three Andover CC Mk1 arrived to replace the ageing Vickers Valetta C1 aircraft of 52 Sqn.
• The furthest airport from Seletar Airport (XSP) is Francisco de Orellana Airport (OCC), which is nearly antipodal to Seletar Airport (meaning Seletar Airport is almost on the exact opposite side of the Earth from Francisco de Orellana Airport), and is located 12,348 miles (19,873 kilometers) away in Coca, Ecuador.
• The closest airport to Seletar Airport (XSP) is Paya Lebar Air Base (PLAB) (QPG), which is located only 5 miles (8 kilometers) SE of XSP.
• Previously Berjaya Air operated scheduled flights to Tioman and Redang.
• Seletar Airport (XSP) currently has only 1 runway.
• An aerial view of Seletar airfield, Singapore, with RAF Mosquito and Dakota I aircraft parked up.
• A Vickers Vildebeest Mk III of No.
• The air base was briefly host to Amy Johnson during May 1930 on her UK - Australia flight in her Gipsy Moth named 'Jason'.
• Because of Seletar Airport's relatively low elevation of 36 feet, planes can take off or land at Seletar 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.

Facts about Challis Airport (CHL):

• The furthest airport from Challis Airport (CHL) is Pierrefonds Airport (ZSE), which is located 10,728 miles (17,265 kilometers) away in Saint-Pierre, Réunion.
• The closest airport to Challis Airport (CHL) is Lemhi County Airport (SMN), which is located 45 miles (72 kilometers) NNE of CHL.
• In addition to being known as "Challis Airport", another name for CHL is "LLJ".
• Challis Airport (CHL) currently has only 1 runway.
• Because of Challis Airport's high elevation of 5,072 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CHL. Combined with a high temperature, this could make CHL a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.