Nonstop flight route between Portland, Oregon, United States and Seletar, Singapore:

About this route:

A direct, nonstop flight between Portland-Troutdale Airport (TTD), Portland, Oregon, United States and Seletar Airport (XSP), Seletar, Singapore would travel a Great Circle distance of 8,139 miles (or 13,098 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 Portland-Troutdale 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 Portland-Troutdale 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 Portland-Troutdale Airport (TTD):

• Portland-Troutdale Airport is a public use airport located 10 nautical miles east of the central business district of Portland, in Multnomah County, Oregon, United States.
• Portland-Troutdale Airport covers an area of 284 acres at an elevation of 39 feet above mean sea level.
• Operations at times may be limited or restricted as Portland International Airport take-off and approach paths cross directly above Troutdale Airport.
• The furthest airport from Portland-Troutdale Airport (TTD) is Tôlanaro Airport (FTU), which is located 10,901 miles (17,543 kilometers) away in Tôlanaro, Madagascar.
• The closest airport to Portland-Troutdale Airport (TTD) is Portland International Airport (PDX), which is located only 10 miles (16 kilometers) WNW of TTD.
• Portland-Troutdale Airport (TTD) currently has only 1 runway.
• Because of Portland-Troutdale Airport's relatively low elevation of 39 feet, planes can take off or land at Portland-Troutdale 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):

• There had been a proposal to extend its runway to 2,000 metres, so as to be able to receive the Boeing 737 used by many budget airlines.
• 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.
• 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.
• Vickers Vildebeest Mk IIs, K2918 and K2921, of 'A' Flight, No.
• 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.
• A 205 Sqn Short Sunderland Mark V ML797 "P" at the ramp of RAF Seletar, this particular airframe became the last of its type to retire from active RAF service on 30 June 1959.
• During the Japanese occupation, Seletar as was in the case of Sembawang came under the Imperial Japanese Navy Air Service while Tengah fell under the jurisdiction of the Imperial Japanese Army Air Force.
• In December 1966, three Andover CC Mk1 arrived to replace the ageing Vickers Valetta C1 aircraft of 52 Sqn.
• In addition to being known as "Seletar Airport", other names for XSP include "实里达机场" and "செலட்டர் வான்முகம்".