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Flight distance & time
Seattle Tacoma International Airport → Singapore Changi International Airport
SEASIN
- Distance
- 12,978 km · 8,064 mi
- Flight time
- 16h 58m
- CO₂ per passenger
- 1,168 kg
This Seattle Tacoma International Airport → Singapore Changi International Airport route is 12,978 km (8,064 mi) end to end. The estimated flight time is 16h 58m, and a passenger's share of CO₂ works out at roughly 1,168 kg.
See the reverse route: Singapore Changi International Airport → Seattle Tacoma International Airport
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Your route
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToSINSingapore Changi International AirportSingapore, North-East
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~0.9 flights/day
Airlines on this route
Singapore Airlines
Common questions
Seattle Tacoma International Airport to Singapore Changi International Airport FAQ
How far is Seattle Tacoma International Airport from Singapore Changi International Airport?
Seattle Tacoma International Airport (SEA) and Singapore Changi International Airport (SIN) are 12,978 km (8,064 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to Singapore Changi International Airport?
A direct SEA–SIN flight covers the distance in about 16h 58m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Seattle Tacoma International Airport to Singapore Changi International Airport produce?
A passenger's share of CO₂ on the SEA–SIN route is roughly 1,168 kg.
Which airlines fly from Seattle Tacoma International Airport to Singapore Changi International Airport?
Singapore Airlines operate scheduled service between SEA and SIN.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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