Distance From Seattle–Tacoma International Airport to Singapore Changi Airport, SEA - SIN Distance

The distance from Seattle–Tacoma International Airport (SEA) to Singapore Changi Airport (SIN) is 8065 miles or 12979 kilometers or 7004 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Seattle ( United States ) to Singapore ( Singapore )?

A one-way nonstop (direct) flight between Seattle and Singapore takes around 18 hours 32 minutes.

Estimated flight time from Seattle–Tacoma International Airport, Seattle, United States to Singapore Changi Airport, Singapore, Singapore is 18 hours 32 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • SEA - SIN

Kilometers		12979 km
Statute Miles		8065 miles
Nautical Miles		7004 nm
Avg. Time of Flight		18 hours 32 minutes

Seattle–Tacoma International Airport to Singapore Changi Airport Flight Route Map - SEA to SIN Flight Path

Location of Seattle–Tacoma International Airport & Singapore Changi Airport is given below.
Click the map to view Seattle to Singapore nonstop flight path and travel direction.

Click to see flight route on Google Map between Seattle, United States and Singapore, Singapore. .

Nonstop flight route between Seattle, United States and Singapore, Singapore.

Time Difference Between the Airports • SEA - SIN

Time difference between Seattle (United States) and Singapore (Singapore) is 15 Hours.
Singapore time is 15 Hours ahead of Seattle.

Location	Local Time
Seattle (United States)	2025-01-15, 04:35:25 MST
Singapore (Singapore)	2025-01-15, 19:35:25 +08

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States

Destination

Singapore Changi Airport (SIN / WSSS) Singapore, Singapore