Nonstop flight route between St. Mary's, Alaska, United States and Seletar, Singapore:

About this route:

A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Seletar Airport (XSP), Seletar, Singapore would travel a Great Circle distance of 6,223 miles (or 10,016 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 St. Mary's 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 St. Mary's 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 St. Mary's Airport (KSM):

• Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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.
• The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
• St. Mary's Airport (KSM) has 2 runways.
• The closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.

Facts about Seletar Airport (XSP):

• Seletar Airport (XSP) currently has only 1 runway.
• Catalina I of 205 Sqn undergoing servicing in their hangar at RAF Seletar.
• 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.
• During the 1960s, RAF Seletar was home base to No's 103 and 110 Squadrons, both of which were equipped with Westland Whirlwind Mk 10 helicopters and to 34 Squadron, which was equipped with Blackburn Beverleys.
• RAF Seletar served as a civil airport from 1930 before the opening of Singapore's first civil airport at Kallang on 12 June 1937.
• 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.
• Vickers Vildebeest Mk IIs, K2918 and K2921, of 'A' Flight, No.
• After World War II, the base went back to the RAF and, in the late 1940s and 1950s, the base was heavily involved in the Malayan Emergency, with Beaufighters, Spitfires and Mosquitos based there while operating against Malayan Communist insurgents.
• The air base was briefly host to Amy Johnson during May 1930 on her UK - Australia flight in her Gipsy Moth named 'Jason'.
• 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 formative years of the SADC was established at Seletar Airbase in September 1968, with the setting up of the Flying Training School utilising three Cessna 172G/H on loan from the Singapore Flying Club.
• In addition to being known as "Seletar Airport", other names for XSP include "实里达机场" and "செலட்டர் வான்முகம்".