CA $568 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View CA $568 flight on Tue, Aug 18, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Changi Airport (SIN)

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Cheap flights from Seattle (SEA) to Singapore (SIN)

Prices were available within the past 7 days and start at CA $568 for one-way flights and CA $1,156 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Nov 24 - Tue, Dec 1
SEA
Seattle
SIN
Singapore
CA $1,156 Roundtrip, found 18 hours ago
CA $1,156
Roundtrip
found 18 hours ago
Select Air Canada flight, departing Tue, Nov 24 from Seattle to Singapore, returning Tue, Dec 1, priced at CA $1,156 found 18 hours ago
Singapore Airlines
Tue, Nov 24 - Tue, Dec 1
SEA
Seattle
SIN
Singapore
CA $1,178 Roundtrip, found 18 hours ago
CA $1,178
Roundtrip
found 18 hours ago
Select Singapore Airlines flight, departing Tue, Nov 24 from Seattle to Singapore, returning Tue, Dec 1, priced at CA $1,178 found 18 hours ago
Asiana Airlines
Tue, Sep 8 - Wed, Sep 23
SEA
Seattle
SIN
Singapore
CA $1,187 Roundtrip, found 14 hours ago
CA $1,187
Roundtrip
found 14 hours ago
Select Asiana Airlines flight, departing Tue, Sep 8 from Seattle to Singapore, returning Wed, Sep 23, priced at CA $1,187 found 14 hours ago
Philippine Airlines
Thu, Nov 12 - Thu, Nov 26
SEA
Seattle
SIN
Singapore
CA $1,227 Roundtrip, found 1 day ago
CA $1,227
Roundtrip
found 1 day ago
Select Philippine Airlines flight, departing Thu, Nov 12 from Seattle to Singapore, returning Thu, Nov 26, priced at CA $1,227 found 1 day ago
United
Tue, Sep 29 - Thu, Oct 29
SEA
Seattle
SIN
Singapore
CA $1,330 Roundtrip, found 4 days ago
CA $1,330
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 29 from Seattle to Singapore, returning Thu, Oct 29, priced at CA $1,330 found 4 days ago
Delta
Tue, Aug 18 - Mon, Aug 31
SEA
Seattle
SIN
Singapore
CA $1,344 Roundtrip, found 14 hours ago
CA $1,344
Roundtrip
found 14 hours ago
Select Delta flight, departing Tue, Aug 18 from Seattle to Singapore, returning Mon, Aug 31, priced at CA $1,344 found 14 hours ago
Korean Air
Mon, Feb 22 - Wed, Mar 3
SEA
Seattle
SIN
Singapore
CA $1,349 Roundtrip, found 1 day ago
CA $1,349
Roundtrip
found 1 day ago
Select Korean Air flight, departing Mon, Feb 22 from Seattle to Singapore, returning Wed, Mar 3, priced at CA $1,349 found 1 day ago
All Nippon Airways
Tue, Aug 18 - Mon, Aug 31
SEA
Seattle
SIN
Singapore
CA $1,394 Roundtrip, found 14 hours ago
CA $1,394
Roundtrip
found 14 hours ago
Select All Nippon Airways flight, departing Tue, Aug 18 from Seattle to Singapore, returning Mon, Aug 31, priced at CA $1,394 found 14 hours ago
Cathay Pacific
Mon, Feb 22 - Wed, Mar 3
SEA
Seattle
SIN
Singapore
CA $1,401 Roundtrip, found 1 day ago
CA $1,401
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Mon, Feb 22 from Seattle to Singapore, returning Wed, Mar 3, priced at CA $1,401 found 1 day ago
China Airlines
Tue, Nov 24 - Tue, Dec 1
SEA
Seattle
SIN
Singapore
CA $1,412 Roundtrip, found 18 hours ago
CA $1,412
Roundtrip
found 18 hours ago
Select China Airlines flight, departing Tue, Nov 24 from Seattle to Singapore, returning Tue, Dec 1, priced at CA $1,412 found 18 hours ago

Find the cheapest month to fly from Seattle (SEA) to Singapore (SIN)

September is typically the cheapest month to fly

From CA $855 - CA $1,263 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Changi Airport?
The lowest price advertised for a round-trip journey from Sea-Tac Airport to Changi Airport is CA $1,156. But you better act quick. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Singapore Airport?
When it comes to cancellation fees, each airline has its own set of terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to SIN that have flexible change policies?
Flights from SEA to Changi Airport with flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the cost difference between the two flights, with no added fees to worry about.
How many hours is the flight from Sea-Tac Airport to Changi Airport?
Make the 19 hours and 51 minutes between Sea-Tac Airport and Changi Airport (SIN) as comfortable as possible. Bring the essentials, like toiletries, your toothbrush and a neck pillow, and sit back and enjoy the flight!
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport?
With a flight distance of 13,000 kilometres between Sea-Tac Airport and Changi Airport (SIN), this is a long trip. Make sure you drink lots of water and get up to stretch your legs from time to time.
Which airlines fly direct from Sea-Tac Airport to Singapore Airport?
Singapore Airlines (SQ) will get you from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN) comfortably and safely. You can choose from 17 direct flights every month on this route.
Are Sea-Tac Airport to Changi Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally find a bargain, with some of the cheapest fares from SEA to Changi Airport popping up a few weeks prior to the departure date. If you'd rather plan ahead of time, Expedia compares and updates the best flight deals continually — as early as a year in advance in some cases. It depends on the carrier though, as not every airline advertises prices so far in advance.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Roundtrip price
CA $1,156
Distance
12903 km
Average flight time
15 hours 50 mins

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