฿12,670 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View ฿12,670 flight on Wed, 29 Oct 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 ฿12,670 for one-way flights and ฿22,275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Sun, 9 Nov - Sat, 22 Nov
SEA
Seattle
SIN
Singapore
฿22,275 Return, found 2 days ago
฿22,275
Return
found 2 days ago
Select Philippine Airlines flight, departing Sun, 9 Nov from Seattle to Singapore, returning Sat, 22 Nov, priced at ฿22,275 found 2 days ago
Asiana Airlines
Wed, 20 May - Wed, 17 Jun
SEA
Seattle
SIN
Singapore
฿24,770 Return, found 3 days ago
฿24,770
Return
found 3 days ago
Select Asiana Airlines flight, departing Wed, 20 May from Seattle to Singapore, returning Wed, 17 Jun, priced at ฿24,770 found 3 days ago
Korean Air
Thu, 4 Dec - Sun, 31 May
SEA
Seattle
SIN
Singapore
฿25,860 Return, found 19 hours ago
฿25,860
Return
found 19 hours ago
Select Korean Air flight, departing Thu, 4 Dec from Seattle to Singapore, returning Sun, 31 May, priced at ฿25,860 found 19 hours ago
Air Canada
Thu, 21 May - Thu, 18 Jun
SEA
Seattle
SIN
Singapore
฿25,955 Return, found 3 days ago
฿25,955
Return
found 3 days ago
Select Air Canada flight, departing Thu, 21 May from Seattle to Singapore, returning Thu, 18 Jun, priced at ฿25,955 found 3 days ago
United
Sun, 9 Nov - Sat, 22 Nov
SEA
Seattle
SIN
Singapore
฿26,005 Return, found 2 days ago
฿26,005
Return
found 2 days ago
Select United flight, departing Sun, 9 Nov from Seattle to Singapore, returning Sat, 22 Nov, priced at ฿26,005 found 2 days ago
All Nippon Airways
Thu, 21 May - Thu, 18 Jun
SEA
Seattle
SIN
Singapore
฿28,195 Return, found 3 days ago
฿28,195
Return
found 3 days ago
Select All Nippon Airways flight, departing Thu, 21 May from Seattle to Singapore, returning Thu, 18 Jun, priced at ฿28,195 found 3 days ago
Cathay Pacific
Wed, 20 May - Wed, 17 Jun
SEA
Seattle
SIN
Singapore
฿31,095 Return, found 3 days ago
฿31,095
Return
found 3 days ago
Select Cathay Pacific flight, departing Wed, 20 May from Seattle to Singapore, returning Wed, 17 Jun, priced at ฿31,095 found 3 days ago
Japan Airlines
Thu, 8 Jan - Wed, 14 Jan
SEA
Seattle
SIN
Singapore
฿35,795 Return, found 1 day ago
฿35,795
Return
found 1 day ago
Select Japan Airlines flight, departing Thu, 8 Jan from Seattle to Singapore, returning Wed, 14 Jan, priced at ฿35,795 found 1 day ago
China Airlines
Sun, 9 Nov - Sat, 22 Nov
SEA
Seattle
SIN
Singapore
฿36,195 Return, found 2 days ago
฿36,195
Return
found 2 days ago
Select China Airlines flight, departing Sun, 9 Nov from Seattle to Singapore, returning Sat, 22 Nov, priced at ฿36,195 found 2 days ago
STARLUX Airlines
Thu, 4 Dec - Sun, 31 May
SEA
Seattle
SIN
Singapore
฿36,970 Return, found 19 hours ago
฿36,970
Return
found 19 hours ago
Select STARLUX Airlines flight, departing Thu, 4 Dec from Seattle to Singapore, returning Sun, 31 May, priced at ฿36,970 found 19 hours ago

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

September is typically the cheapest month to fly

From ฿21,671 - ฿32,689 per traveller.

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 ฿22,275. 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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Return price
฿22,275
Distance
12903 km
Average flight time
15 hours 20 mins

Book with confidence

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 ฿12,670 and roundtrip prices from ฿22,275. 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.
Perfect flights from Seattle to Singapore

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