Nonstop flight route between Roundup, Montana, United States and Seletar, Singapore:

About this route:

A direct, nonstop flight between Roundup Airport (RPX), Roundup, Montana, United States and Seletar Airport (XSP), Seletar, Singapore would travel a Great Circle distance of 8,587 miles (or 13,820 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 Seletar 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 Seletar 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 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.
• The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.
• Roundup Airport (RPX) has 2 runways.

Facts about Seletar Airport (XSP):

• 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.
• Seletar Airport (XSP) currently has only 1 runway.
• 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.
• Previously Berjaya Air operated scheduled flights to Tioman and Redang.
• In addition to being known as "Seletar Airport", other names for XSP include "实里达机场" and "செலட்டர் வான்முகம்".
• The RAF station closed at the end of March 1971 and Seletar was handed over to the Singapore Air Defence Command later) by 1973, after the British pullout.
• Short Singapore Mk III flying boat of 205 Sqn, in flight below three 'vic' formations of Vickers Vildebeest torpedo bombers of 100 Sqn.
• 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.
• With the threat of war in the area, the RAF started building up their forces in the Far East in the late 1930s and early 1940s.