Cheap Flights from Seattle (SEA) to Singapore (SIN) from HK$2,538~

View HK$2,538 flight on Thu, 5 Mar 2026Opens in a new window

Popular airlines from Seattle to Singapore (SIN-Changi)

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

Prices were available within the past 7 days and start at HK$2,538 for one-way flights and HK$5,875 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$5,875 Return, found 4 days ago
HK$5,875
Return
found 4 days ago
Select Asiana Airlines flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$5,875 found 4 days ago
Air Canada
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,604 Return, found 4 days ago
HK$6,604
Return
found 4 days ago
Select Air Canada flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,604 found 4 days ago
United
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,765 Return, found 4 days ago
HK$6,765
Return
found 4 days ago
Select United flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,765 found 4 days ago
United
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,795 Return, found 4 days ago
HK$6,795
Return
found 4 days ago
Select United flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,795 found 4 days ago
Delta
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,827 Return, found 4 days ago
HK$6,827
Return
found 4 days ago
Select Delta flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,827 found 4 days ago
United
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,839 Return, found 4 days ago
HK$6,839
Return
found 4 days ago
Select United flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,839 found 4 days ago
Korean Air
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,855 Return, found 4 days ago
HK$6,855
Return
found 4 days ago
Select Korean Air flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,855 found 4 days ago
United
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$6,869 Return, found 4 days ago
HK$6,869
Return
found 4 days ago
Select United flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$6,869 found 4 days ago
Alaska Airlines
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$7,012 Return, found 4 days ago
HK$7,012
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$7,012 found 4 days ago
Asiana Airlines
Sat, 24 Jan - Fri, 6 Feb
SEA
Seattle
SIN
Singapore
HK$7,024 Return, found 4 days ago
HK$7,024
Return
found 4 days ago
Select Asiana Airlines flight, departing Sat, 24 Jan from Seattle to Singapore, returning Fri, 6 Feb, priced at HK$7,024 found 4 days ago

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

September is typically the cheapest month to fly

From HK$5,202 - HK$7,659 per traveller.
0
Seattle to Singapore route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Return price
HK$5,875
Distance
12903 km

Flights from Seattle to Singapore

Book cheap flights from Seattle (SEA) to Singapore (SIN) 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 Seattle (SEA) to Singapore (SIN) 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 Seattle (SEA) to Singapore (SIN) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

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

If you would like to book flights to Singapore more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Singapore is HK$2,538 now!

 

Frequently asked questions

How much is a flight from SEA to Changi Airport (SIN)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey from SEA to Singapore Airport was HK$5,875. Cheap fares don't wait forever, so make sure you book yours ASAP. 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 Changi Airport (SIN)?
Most flights can be canceled online, but every air carrier has different terms and conditions. If you do have to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport 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 SEA to SIN flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport?
The distance is around 13,000 kilometers, so pack your carry-on bag with all you need to make your journey comfortable. Not sure what to take on board your SeaTac to Singapore flight? A sleep mask, earplugs and a travel pillow are among the essentials.
Which airlines fly direct from SEA to Singapore Airport?
Operating 13 flights every month, Singapore Airlines (SQ) is a popular choice when flying directly from Sea-Tac Airport to Changi Airport (SIN).
Are Seattle - Tacoma Intl. Airport (SEA) to Changi Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices always go up and down, so not always. While last-minute deals between Sea-Tac Airport and Singapore Airport are possible, it's also a good idea to monitor prices well before you fly. In fact, some air carriers publicize their prices up to a year before the departure date. Expedia is continuously updating the best airfare bargains around, so check back often and be ready to secure your seat when the price is right.

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