Nonstop flight route between St. Helens, Tasmania, Australia and Seletar, Singapore:

About this route:

A direct, nonstop flight between St Helens Airport (HLS), St. Helens, Tasmania, Australia and Seletar Airport (XSP), Seletar, Singapore would travel a Great Circle distance of 4,054 miles (or 6,525 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 Helens 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 Helens 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 Helens Airport (HLS):

• The closest airport to St Helens Airport (HLS) is Launceston Airport (LST), which is located 57 miles (92 kilometers) WSW of HLS.
• The furthest airport from St Helens Airport (HLS) is Corvo Airport (CVU), which is nearly antipodal to St Helens Airport (meaning St Helens Airport is almost on the exact opposite side of the Earth from Corvo Airport), and is located 12,317 miles (19,823 kilometers) away in Corvo Island, Azores, Portugal.
• St Helens Airport (HLS) currently has only 1 runway.
• Because of St Helens Airport's relatively low elevation of 158 feet, planes can take off or land at St Helens 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 Seletar Airport (XSP):

• 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.
• The air base was briefly host to Amy Johnson during May 1930 on her UK - Australia flight in her Gipsy Moth named 'Jason'.
• RAF Seletar served as a civil airport from 1930 before the opening of Singapore's first civil airport at Kallang on 12 June 1937.
• 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.
• When the Japanese launched their invasion of Malaya and Singapore, Seletar housed the RAF’s 205 Sqn with PBY Catalina flying boats and 36 and 100 Sqns with obsolete Vickers Vildebeest torpedo bombers, along with 151 Maintenance Unit.
• 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.
• Vickers Vildebeest Mk IIs, K2918 and K2921, of 'A' Flight, No.
• A Short Singapore Mk III flying boat, similar to those operated by 205 Sqn.
• In addition to being known as "Seletar Airport", other names for XSP include "实里达机场" and "செலட்டர் வான்முகம்".
• Seletar Airport (XSP) currently has only 1 runway.
• 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.
• 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.