Cheap Flights from Singapore (SIN) to Seattle (SEA) from HK$4,058~

View HK$4,058 flight on Thu, 26 Mar 2026Opens 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$4,058 for one-way flights and HK$6,016 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 30 Jan - Sun, 15 Feb
SIN
Singapore
SEA
Seattle
HK$6,016 Return, found 6 days ago
HK$6,016
Return
found 6 days ago
Select United flight, departing Fri, 30 Jan from Singapore to Seattle, returning Sun, 15 Feb, priced at HK$6,016 found 6 days ago
Delta
Sun, 8 Feb - Sat, 14 Feb
SIN
Singapore
SEA
Seattle
HK$6,608 Return, found 1 day ago
HK$6,608
Return
found 1 day ago
Select Delta flight, departing Sun, 8 Feb from Singapore to Seattle, returning Sat, 14 Feb, priced at HK$6,608 found 1 day ago
Korean Air
Sun, 31 May - Tue, 9 Jun
SIN
Singapore
SEA
Seattle
HK$6,636 Return, found 6 days ago
HK$6,636
Return
found 6 days ago
Select Korean Air flight, departing Sun, 31 May from Singapore to Seattle, returning Tue, 9 Jun, priced at HK$6,636 found 6 days ago
EVA Airways
Sun, 28 Jun - Sat, 11 Jul
SIN
Singapore
SEA
Seattle
HK$6,687 Return, found 3 days ago
HK$6,687
Return
found 3 days ago
Select EVA Airways flight, departing Sun, 28 Jun from Singapore to Seattle, returning Sat, 11 Jul, priced at HK$6,687 found 3 days ago
China Airlines
Sat, 30 May - Mon, 8 Jun
SIN
Singapore
SEA
Seattle
HK$6,711 Return, found 6 days ago
HK$6,711
Return
found 6 days ago
Select China Airlines flight, departing Sat, 30 May from Singapore to Seattle, returning Mon, 8 Jun, priced at HK$6,711 found 6 days ago
STARLUX Airlines
Sun, 28 Jun - Sat, 11 Jul
SIN
Singapore
SEA
Seattle
HK$6,837 Return, found 3 days ago
HK$6,837
Return
found 3 days ago
Select STARLUX Airlines flight, departing Sun, 28 Jun from Singapore to Seattle, returning Sat, 11 Jul, priced at HK$6,837 found 3 days ago
Singapore Airlines
Fri, 6 Feb - Fri, 20 Feb
SIN
Singapore
SEA
Seattle
HK$6,954 Return, found 1 day ago
HK$6,954
Return
found 1 day ago
Select Singapore Airlines flight, departing Fri, 6 Feb from Singapore to Seattle, returning Fri, 20 Feb, priced at HK$6,954 found 1 day ago
Air Canada
Fri, 6 Feb - Fri, 20 Feb
SIN
Singapore
SEA
Seattle
HK$7,276 Return, found 1 day ago
HK$7,276
Return
found 1 day ago
Select Air Canada flight, departing Fri, 6 Feb from Singapore to Seattle, returning Fri, 20 Feb, priced at HK$7,276 found 1 day ago
Cathay Pacific
Sun, 28 Jun - Sat, 11 Jul
SIN
Singapore
SEA
Seattle
HK$7,354 Return, found 3 days ago
HK$7,354
Return
found 3 days ago
Select Cathay Pacific flight, departing Sun, 28 Jun from Singapore to Seattle, returning Sat, 11 Jul, priced at HK$7,354 found 3 days ago
Asiana Airlines
Sat, 30 May - Mon, 8 Jun
SIN
Singapore
SEA
Seattle
HK$8,316 Return, found 6 days ago
HK$8,316
Return
found 6 days ago
Select Asiana Airlines flight, departing Sat, 30 May from Singapore to Seattle, returning Mon, 8 Jun, priced at HK$8,316 found 6 days ago

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

May is typically the cheapest month to fly

From HK$4,670 - HK$6,778 per traveller.
Singapore to Seattle route information
Origin airport
Changi
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, Cathay Pacific, Delta, EVA Airways, Emirates, Korean Air, Philippine Airlines, Qatar Airways, Singapore Airlines, United
Return price
HK$6,016
Distance
12903 km
Average flight time
14 hours 10 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$4,058 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$6,016. 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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