Cheap Flights from Singapore (SIN) to Seattle (SEA) from HK$3,252~

View HK$3,252 flight on Thu, 9 Oct 2025Opens in a new window

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

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Find Cheap Flights from Singapore (SIN) to Seattle (SEA)

Prices were available within the past 7 days and start at HK$3,252 for one-way flights and HK$5,319 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, 30 Sep - Tue, 14 Oct
SIN
Singapore
SEA
Seattle
HK$5,319 Return, found 20 hours ago
HK$5,319
Return
found 20 hours ago
Select Air Canada flight, departing Tue, 30 Sep from Singapore to Seattle, returning Tue, 14 Oct, priced at HK$5,319 found 20 hours ago
STARLUX Airlines
Fri, 12 Dec - Tue, 6 Jan
SIN
Singapore
SEA
Seattle
HK$6,504 Return, found 6 days ago
HK$6,504
Return
found 6 days ago
Select STARLUX Airlines flight, departing Fri, 12 Dec from Singapore to Seattle, returning Tue, 6 Jan, priced at HK$6,504 found 6 days ago
United
Tue, 29 Jul - Mon, 4 Aug
SIN
Singapore
SEA
Seattle
HK$6,555 Return, found 6 days ago
HK$6,555
Return
found 6 days ago
Select United flight, departing Tue, 29 Jul from Singapore to Seattle, returning Mon, 4 Aug, priced at HK$6,555 found 6 days ago
Delta
Mon, 1 Sep - Mon, 15 Sep
SIN
Singapore
SEA
Seattle
HK$6,689 Return, found 20 hours ago
HK$6,689
Return
found 20 hours ago
Select Delta flight, departing Mon, 1 Sep from Singapore to Seattle, returning Mon, 15 Sep, priced at HK$6,689 found 20 hours ago
Korean Air
Fri, 12 Sep - Sat, 27 Sep
SIN
Singapore
SEA
Seattle
HK$6,717 Return, found 20 hours ago
HK$6,717
Return
found 20 hours ago
Select Korean Air flight, departing Fri, 12 Sep from Singapore to Seattle, returning Sat, 27 Sep, priced at HK$6,717 found 20 hours ago
EVA Airways
Sat, 20 Sep - Fri, 10 Oct
SIN
Singapore
SEA
Seattle
HK$6,852 Return, found 20 hours ago
HK$6,852
Return
found 20 hours ago
Select EVA Airways flight, departing Sat, 20 Sep from Singapore to Seattle, returning Fri, 10 Oct, priced at HK$6,852 found 20 hours ago
Asiana Airlines
Fri, 12 Dec - Tue, 6 Jan
SIN
Singapore
SEA
Seattle
HK$7,363 Return, found 6 days ago
HK$7,363
Return
found 6 days ago
Select Asiana Airlines flight, departing Fri, 12 Dec from Singapore to Seattle, returning Tue, 6 Jan, priced at HK$7,363 found 6 days ago
Philippine Airlines
Fri, 19 Sep - Fri, 10 Oct
SIN
Singapore
SEA
Seattle
HK$7,591 Return, found 20 hours ago
HK$7,591
Return
found 20 hours ago
Select Philippine Airlines flight, departing Fri, 19 Sep from Singapore to Seattle, returning Fri, 10 Oct, priced at HK$7,591 found 20 hours ago
Japan Airlines
Mon, 18 Aug - Sun, 31 Aug
SIN
Singapore
SEA
Seattle
HK$8,323 Return, found 20 hours ago
HK$8,323
Return
found 20 hours ago
Select Japan Airlines flight, departing Mon, 18 Aug from Singapore to Seattle, returning Sun, 31 Aug, priced at HK$8,323 found 20 hours ago
All Nippon Airways
Thu, 21 Aug - Wed, 3 Sep
SIN
Singapore
SEA
Seattle
HK$8,695 Return, found 1 hour ago
HK$8,695
Return
found 1 hour ago
Select All Nippon Airways flight, departing Thu, 21 Aug from Singapore to Seattle, returning Wed, 3 Sep, priced at HK$8,695 found 1 hour ago

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

May is typically the cheapest month to fly

From HK$4,693 - HK$6,900 per traveller.

Graph displaying average flight prices per month

Singapore to Seattle route information
Origin airport
Changi
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Delta, EVA Airways, Japan Airlines, Korean Air, Philippine Airlines, United
Return price
HK$5,319
Distance
12903 km
Average flight time
15 hours 45 mins

Flights from Singapore to Seattle

Book cheap flights from Singapore (SIN) to Seattle (SEA) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Singapore (SIN) to Seattle (SEA) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Singapore (SIN) to Seattle (SEA) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Seattle flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Seattle and things to do in Seattle for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Seattle more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is HK$3,252 now!

 

Frequently asked questions

How much is a flight from Singapore Airport to Sea-Tac Airport?
Round-trip tickets between SIN and SEA start from HK$5,319. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SIN to Seattle - Tacoma Intl. Airport (SEA)?
The majority of flights can be canceled online, but each air carrier has different terms and conditions. If you do need to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Changi Airport to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Singapore Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SIN to Sea-Tac Airport?
The distance is around 13,000 kilometers. Eye mask? Check. Toothbrush? Check. We recommend you pack all the travel comforts for this long-haul Singapore to SeaTac flight.
Which airlines fly direct from Changi Airport (SIN) to Sea-Tac Airport?
A popular option with many frequent flyers, Singapore Airlines (SQ) operates 13 monthly flights from Singapore Airport to SEA. Pick the one that fits in with your travel plans and book your seat today.
Are Singapore Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so there are no guarantees. While last-minute flight deals between Singapore Airport and Sea-Tac Airport are possible, it also makes sense to keep an eye on prices well before you fly. In fact, some airlines publicize their prices up to 12 months prior to the departure date. Expedia is constantly updating the best bargains around, so keep checking and be ready to pounce when the price dips.

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