฿12,145 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View ฿12,145 flight on Fri, 28 Nov 2025Opens 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 ฿12,145 for one-way flights and ฿23,585 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, 9 Sep - Sat, 13 Sep
SEA
Seattle
SIN
Singapore
฿23,585 Return, found 1 day ago
฿23,585
Return
found 1 day ago
Select Air Canada flight, departing Tue, 9 Sep from Seattle to Singapore, returning Sat, 13 Sep, priced at ฿23,585 found 1 day ago
Asiana Airlines
Mon, 19 Jan - Mon, 2 Feb
SEA
Seattle
SIN
Singapore
฿24,775 Return, found 1 day ago
฿24,775
Return
found 1 day ago
Select Asiana Airlines flight, departing Mon, 19 Jan from Seattle to Singapore, returning Mon, 2 Feb, priced at ฿24,775 found 1 day ago
Korean Air
Thu, 6 Nov - Sun, 7 Dec
SEA
Seattle
SIN
Singapore
฿24,780 Return, found 6 days ago
฿24,780
Return
found 6 days ago
Select Korean Air flight, departing Thu, 6 Nov from Seattle to Singapore, returning Sun, 7 Dec, priced at ฿24,780 found 6 days ago
United
Thu, 2 Oct - Sat, 11 Oct
SEA
Seattle
SIN
Singapore
฿26,005 Return, found 6 days ago
฿26,005
Return
found 6 days ago
Select United flight, departing Thu, 2 Oct from Seattle to Singapore, returning Sat, 11 Oct, priced at ฿26,005 found 6 days ago
Japan Airlines
Mon, 19 Jan - Mon, 2 Feb
SEA
Seattle
SIN
Singapore
฿27,860 Return, found 1 day ago
฿27,860
Return
found 1 day ago
Select Japan Airlines flight, departing Mon, 19 Jan from Seattle to Singapore, returning Mon, 2 Feb, priced at ฿27,860 found 1 day ago
All Nippon Airways
Mon, 19 Jan - Mon, 2 Feb
SEA
Seattle
SIN
Singapore
฿28,210 Return, found 1 day ago
฿28,210
Return
found 1 day ago
Select All Nippon Airways flight, departing Mon, 19 Jan from Seattle to Singapore, returning Mon, 2 Feb, priced at ฿28,210 found 1 day ago
Delta
Thu, 6 Nov - Sun, 7 Dec
SEA
Seattle
SIN
Singapore
฿31,015 Return, found 6 days ago
฿31,015
Return
found 6 days ago
Select Delta flight, departing Thu, 6 Nov from Seattle to Singapore, returning Sun, 7 Dec, priced at ฿31,015 found 6 days ago
American Airlines
Mon, 19 Jan - Mon, 2 Feb
SEA
Seattle
SIN
Singapore
฿32,575 Return, found 1 day ago
฿32,575
Return
found 1 day ago
Select American Airlines flight, departing Mon, 19 Jan from Seattle to Singapore, returning Mon, 2 Feb, priced at ฿32,575 found 1 day ago
China Airlines
Tue, 7 Oct - Tue, 14 Oct
SEA
Seattle
SIN
Singapore
฿32,580 Return, found 3 days ago
฿32,580
Return
found 3 days ago
Select China Airlines flight, departing Tue, 7 Oct from Seattle to Singapore, returning Tue, 14 Oct, priced at ฿32,580 found 3 days ago
Turkish Airlines
Thu, 9 Oct - Thu, 23 Oct
SEA
Seattle
SIN
Singapore
฿33,040 Return, found 2 days ago
฿33,040
Return
found 2 days ago
Select Turkish Airlines flight, departing Thu, 9 Oct from Seattle to Singapore, returning Thu, 23 Oct, priced at ฿33,040 found 2 days ago

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

February is typically the cheapest month to fly

From ฿23,309 - ฿34,725 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Singapore route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Return price
฿23,585
Distance
12903 km
Average flight time
15 hours 20 mins

Perfect flights from Seattle to Singapore

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Singapore. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Changi ticket options cater to your travel preferences, with incredible one-way fares from ฿12,145 and roundtrip prices from ฿23,585. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Changi and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Singapore.

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 ฿23,585. 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 cancelled 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 kilometres, 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.

Explore a world of travel with Expedia

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