Flight Route · International
Seattle → Singapore
SEA to SIN
Seattle–Tacoma International Airport to Singapore Changi Airport: 8,064 miles (12,978 km), about 16h 43m airborne, +15h time-zone shift on arrival.
Distance
8,064 mi
12,978 km
Flight time
16h 43m
block time, approx
Time-zone shift
+15h
Los_Angeles → Singapore
International?
Yes
United States → Singapore
SEA–SIN questions, answered
How long is the flight from Seattle to Singapore?
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A direct flight from Seattle–Tacoma International Airport (SEA) to Singapore Changi Airport (SIN) takes approximately 16h 43m. Actual block time varies with aircraft type, winds, and routing.
What is the distance from SEA to SIN?
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The great-circle distance from Seattle–Tacoma International Airport to Singapore Changi Airport is approximately 8064 miles (12978 kilometers). Actual flown distance varies slightly with the routing assigned by air traffic control.
What is the time difference between Seattle and Singapore?
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Singapore is +15h relative to Seattle. America/Los_Angeles → Asia/Singapore.
Which airlines fly from SEA to SIN?
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Carriers serving both endpoints include various international and regional carriers. Direct service depends on the specific carrier and season — confirm with your booking source for current schedules.
Is this an international flight?
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Yes. Seattle–Tacoma International Airport is in United States, and Singapore Changi Airport is in Singapore. Travelers should confirm passport, visa, and customs requirements before departure.
Can I track SEA–SIN flights on TripDesk365?
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Yes. TripDesk365 imports your booking confirmations from your inbox, identifies the route, and shows real-time status — gate changes, delays, and live aircraft position. Free for 14 days.
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