$327 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View $327 flight on Thu, Apr 9, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Singapore Changi Airport (SIN)

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Cheap Flights from Seattle to Singapore (SEA-SIN)

Prices were available within the past 7 days and start at $327 for one-way flights and $681 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Thu, Apr 9 - Wed, Apr 15
SEA
Seattle
SIN
Singapore
$681 Roundtrip, just found
$681
Roundtrip
just found
Select Philippine Airlines flight, departing Thu, Apr 9 from Seattle to Singapore, returning Wed, Apr 15, priced at $681 just found
Asiana Airlines
Sun, Mar 1 - Sun, Mar 15
SEA
Seattle
SIN
Singapore
$690 Roundtrip, found 1 hour ago
$690
Roundtrip
found 1 hour ago
Select Asiana Airlines flight, departing Sun, Mar 1 from Seattle to Singapore, returning Sun, Mar 15, priced at $690 found 1 hour ago
Singapore Airlines
Tue, Feb 17 - Sun, Mar 8
SEA
Seattle
SIN
Singapore
$746 Roundtrip, found 6 days ago
$746
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Tue, Feb 17 from Seattle to Singapore, returning Sun, Mar 8, priced at $746 found 6 days ago
Air Canada
Thu, Apr 2 - Thu, Apr 9
SEA
Seattle
SIN
Singapore
$768 Roundtrip, found 2 hours ago
$768
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Apr 2 from Seattle to Singapore, returning Thu, Apr 9, priced at $768 found 2 hours ago
Hainan Airlines
Thu, Mar 12 - Wed, Mar 18
SEA
Seattle
SIN
Singapore
$777 Roundtrip, found 1 hour ago
$777
Roundtrip
found 1 hour ago
Select Hainan Airlines flight, departing Thu, Mar 12 from Seattle to Singapore, returning Wed, Mar 18, priced at $777 found 1 hour ago
Delta
Wed, Mar 4 - Wed, Mar 18
SEA
Seattle
SIN
Singapore
$800 Roundtrip, found 1 hour ago
$800
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Mar 4 from Seattle to Singapore, returning Wed, Mar 18, priced at $800 found 1 hour ago
United
Mon, Jan 26 - Mon, Feb 9
SEA
Seattle
SIN
Singapore
$800 Roundtrip, found 8 hours ago
$800
Roundtrip
found 8 hours ago
Select United flight, departing Mon, Jan 26 from Seattle to Singapore, returning Mon, Feb 9, priced at $800 found 8 hours ago
Korean Air
Thu, Apr 9 - Wed, Apr 15
SEA
Seattle
SIN
Singapore
$803 Roundtrip, just found
$803
Roundtrip
just found
Select Korean Air flight, departing Thu, Apr 9 from Seattle to Singapore, returning Wed, Apr 15, priced at $803 just found
Japan Airlines
Tue, Jan 20 - Tue, Feb 3
SEA
Seattle
SIN
Singapore
$826 Roundtrip, found 2 hours ago
$826
Roundtrip
found 2 hours ago
Select Japan Airlines flight, departing Tue, Jan 20 from Seattle to Singapore, returning Tue, Feb 3, priced at $826 found 2 hours ago
All Nippon Airways
Wed, Mar 4 - Wed, Mar 18
SEA
Seattle
SIN
Singapore
$837 Roundtrip, found 1 hour ago
$837
Roundtrip
found 1 hour ago
Select All Nippon Airways flight, departing Wed, Mar 4 from Seattle to Singapore, returning Wed, Mar 18, priced at $837 found 1 hour ago

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

November is typically the cheapest month to fly

From $668 - $889 per traveler.

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 center is 18 minutes. Flights from $1,841
SIN
Changi
Cheapest
Average driving time to city center18 min
Flights from $1,841
0
Flights from Seattle (SEA) to Singapore (SIN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, STARLUX Airlines, Turkish Airlines, United
Roundtrip price
$681
Distance
8064 mi

Seattle to Singapore Flights

The cheapest times to fly from Seattle to Singapore

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Singapore are during the month of April. You can find some of the cheapest flights from Seattle to Singapore with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Singapore

Sunday is one of the best days to book for cheap flights from Seattle to Singapore: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Singapore

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Singapore in 2026. You can also book with separate airlines for your outbound and return journeys, from $327 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Singapore flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Singapore airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN) cost?
Snag a cheap one-way flight from $327 or cheap return flight from $681 from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
The cheapest month to fly from SEA to SIN is April, when demand is low. Off-peak season is often when airlines offer better prices between these airports.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
Take a direct flight with Singapore Airlines and fly straight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN).
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from SEA to SIN. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
On average you can take your pick of 4 direct flights every week from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN). To broaden your travel options, consider taking a flight with a layover. Enter your dates on Expedia and then filter your search results to show one or two stops.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
Flights between SEA and SIN are their busiest at 8 AM. For a quieter experience and possibly cheaper prices, choose a time when demand is lower.
What day of the week has the most flights from SEA to SIN?
Thursday offers the most flights from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN). Consider jetting off on this day and you'll have the best chance of finding a departure that fits your itinerary.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
Take the earliest flight at around 8:40AM UTC-8, departing from Seattle - Tacoma Intl. Airport (SEA). You'll be flying for about 17h, touching down at Changi Airport (SIN) at approximately 5:40PM UTC+8.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
Flights from SEA to SIN have an average travel time of 17 hours. The distance between these two airports is 8,100 mi.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN) route, travel before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Singapore from Seattle - Tacoma Intl. Airport (SEA)?
Changi Airport (SIN) is the only airport in Singapore with direct flights from Seattle - Tacoma Intl. Airport (SEA). Consider the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN) last-minute?
Holding off until just before your departure to book your flight from SEA to SIN often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for a better chance of scoring a bargain.
Is it cheaper to book a SEA to SIN flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to SIN flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and choose from our wide range of stays, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Changi Airport (SIN)?
If you reserved your SEA to SIN flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.