S$422 Cheap Flights from Seattle to Singapore

View S$422 flight on Thu, 17 Sept, 2026Opens in a new window

Popular airlines from Seattle to Singapore

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Cheap Flights from Seattle to Singapore (SEA-SIN)

Prices were available within the past 7 days and start at S$422 for one-way flights and S$879 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Thu, 2 Apr - Thu, 9 Apr
SEA
Seattle
SIN
Singapore
S$879 Return, found 14 hours ago
S$879
Return
found 14 hours ago
Select Philippine Airlines flight, departing Thu, 2 Apr from Seattle to Singapore, returning Thu, 9 Apr, priced at S$879 found 14 hours ago
Asiana Airlines
Mon, 9 Feb - Tue, 24 Feb
SEA
Seattle
SIN
Singapore
S$910 Return, found 1 day ago
S$910
Return
found 1 day ago
Select Asiana Airlines flight, departing Mon, 9 Feb from Seattle to Singapore, returning Tue, 24 Feb, priced at S$910 found 1 day ago
Hainan Airlines
Thu, 22 Jan - Wed, 4 Feb
SEA
Seattle
SIN
Singapore
S$1,005 Return, found 1 day ago
S$1,005
Return
found 1 day ago
Select Hainan Airlines flight, departing Thu, 22 Jan from Seattle to Singapore, returning Wed, 4 Feb, priced at S$1,005 found 1 day ago
United
Thu, 19 Feb - Thu, 5 Mar
SEA
Seattle
SIN
Singapore
S$1,022 Return, found 4 hours ago
S$1,022
Return
found 4 hours ago
Select United flight, departing Thu, 19 Feb from Seattle to Singapore, returning Thu, 5 Mar, priced at S$1,022 found 4 hours ago
Delta
Thu, 19 Feb - Thu, 5 Mar
SEA
Seattle
SIN
Singapore
S$1,032 Return, found 4 hours ago
S$1,032
Return
found 4 hours ago
Select Delta flight, departing Thu, 19 Feb from Seattle to Singapore, returning Thu, 5 Mar, priced at S$1,032 found 4 hours ago
Korean Air
Thu, 5 Mar - Thu, 12 Mar
SEA
Seattle
SIN
Singapore
S$1,037 Return, found 12 hours ago
S$1,037
Return
found 12 hours ago
Select Korean Air flight, departing Thu, 5 Mar from Seattle to Singapore, returning Thu, 12 Mar, priced at S$1,037 found 12 hours ago
Singapore Airlines
Thu, 21 May - Thu, 4 Jun
SEA
Seattle
SIN
Singapore
S$1,071 Return, found 23 hours ago
S$1,071
Return
found 23 hours ago
Select Singapore Airlines flight, departing Thu, 21 May from Seattle to Singapore, returning Thu, 4 Jun, priced at S$1,071 found 23 hours ago
Air Canada
Thu, 5 Mar - Thu, 12 Mar
SEA
Seattle
SIN
Singapore
S$1,074 Return, found 12 hours ago
S$1,074
Return
found 12 hours ago
Select Air Canada flight, departing Thu, 5 Mar from Seattle to Singapore, returning Thu, 12 Mar, priced at S$1,074 found 12 hours ago
All Nippon Airways
Tue, 13 Jan - Tue, 20 Jan
SEA
Seattle
SIN
Singapore
S$1,083 Return, found 1 day ago
S$1,083
Return
found 1 day ago
Select All Nippon Airways flight, departing Tue, 13 Jan from Seattle to Singapore, returning Tue, 20 Jan, priced at S$1,083 found 1 day ago
Japan Airlines
Tue, 13 Jan - Tue, 20 Jan
SEA
Seattle
SIN
Singapore
S$1,100 Return, found 1 day ago
S$1,100
Return
found 1 day ago
Select Japan Airlines flight, departing Tue, 13 Jan from Seattle to Singapore, returning Tue, 20 Jan, priced at S$1,100 found 1 day ago

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

November is typically the cheapest month to fly

From S$866 - S$1,152 per traveller.

Alternative airports near Singapore

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Changi SIN. Cheapest option available. Average driving time to city centre is 18 minutes. Flights from S$1,269
SIN
Changi
Cheapest
Average driving time to city centre18 min
Flights from S$1,269
0
Seattle to Singapore route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Return price
S$879
Distance
12903 km

Flights from Seattle to Singapore

There are several airlines that operate frequent flights from Seattle (SEA) to Singapore (SIN) including

The earliest flight leaves Seattle Tacoma Intl. Airport at 00:50 and arrives at Changi Airport at 00:05. The last flight of the day departs Seattle at 19:22 and arrives at Singapore at 23:55.

The flight distance from Seattle to Singapore is about 13922 km, the shortest flight is 18 hours 35 minutes with United Airlines.

Expedia lets you search across the largest number of airlines and Singapore flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Singapore flight!

Browse through dozens of options and rest 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 to Singapore trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Singapore flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Singapore with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

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 S$879. 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.

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