$416 Cheap Flights from Singapore (SIN) to Seattle (SEA)

View $416 flight on Tue, Apr 28, 2026Opens in a new window

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

Cheap Flights from Singapore to Seattle (SIN-SEA)

Prices were available within the past 7 days and start at $416 for one-way flights and $665 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Thu, Apr 9 - Thu, Apr 16
SIN
Singapore
SEA
Seattle
$665 Roundtrip, found 3 days ago
$665
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Thu, Apr 9 from Singapore to Seattle, returning Thu, Apr 16, priced at $665 found 3 days ago
Hainan Airlines
Wed, Feb 4 - Thu, Feb 12
SIN
Singapore
SEA
Seattle
$716 Roundtrip, found 6 days ago
$716
Roundtrip
found 6 days ago
Select Hainan Airlines flight, departing Wed, Feb 4 from Singapore to Seattle, returning Thu, Feb 12, priced at $716 found 6 days ago
United
Fri, Jan 23 - Sat, Jan 24
SIN
Singapore
SEA
Seattle
$772 Roundtrip, found 4 days ago
$772
Roundtrip
found 4 days ago
Select United flight, departing Fri, Jan 23 from Singapore to Seattle, returning Sat, Jan 24, priced at $772 found 4 days ago
Delta
Thu, Feb 12 - Sun, Feb 22
SIN
Singapore
SEA
Seattle
$844 Roundtrip, found 4 days ago
$844
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Feb 12 from Singapore to Seattle, returning Sun, Feb 22, priced at $844 found 4 days ago
Asiana Airlines
Tue, Mar 17 - Fri, Apr 3
SIN
Singapore
SEA
Seattle
$848 Roundtrip, found 4 days ago
$848
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Tue, Mar 17 from Singapore to Seattle, returning Fri, Apr 3, priced at $848 found 4 days ago
Korean Air
Thu, Apr 23 - Mon, Apr 27
SIN
Singapore
SEA
Seattle
$852 Roundtrip, just found
$852
Roundtrip
just found
Select Korean Air flight, departing Thu, Apr 23 from Singapore to Seattle, returning Mon, Apr 27, priced at $852 just found
STARLUX Airlines
Tue, Oct 20 - Wed, Oct 21
SIN
Singapore
SEA
Seattle
$854 Roundtrip, found 5 days ago
$854
Roundtrip
found 5 days ago
Select STARLUX Airlines flight, departing Tue, Oct 20 from Singapore to Seattle, returning Wed, Oct 21, priced at $854 found 5 days ago
EVA Airways
Sat, Mar 14 - Mon, Mar 23
SIN
Singapore
SEA
Seattle
$854 Roundtrip, found 5 days ago
$854
Roundtrip
found 5 days ago
Select EVA Airways flight, departing Sat, Mar 14 from Singapore to Seattle, returning Mon, Mar 23, priced at $854 found 5 days ago
China Airlines
Tue, Oct 20 - Wed, Oct 21
SIN
Singapore
SEA
Seattle
$856 Roundtrip, found 5 days ago
$856
Roundtrip
found 5 days ago
Select China Airlines flight, departing Tue, Oct 20 from Singapore to Seattle, returning Wed, Oct 21, priced at $856 found 5 days ago
Singapore Airlines
Thu, Apr 2 - Sun, Apr 12
SIN
Singapore
SEA
Seattle
$885 Roundtrip, found 6 days ago
$885
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Thu, Apr 2 from Singapore to Seattle, returning Sun, Apr 12, priced at $885 found 6 days ago

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

May is typically the cheapest month to fly

From $600 - $873 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,750
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,750
Flights from Singapore (SIN) to Seattle (SEA)
Origin airport
Changi
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, STARLUX Airlines, Turkish Airlines, United
Roundtrip price
$664
Distance
8064 mi
Average flight time
14 hours 10 mins

Singapore to Seattle Flights

The cheapest times to fly from Singapore to Seattle

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 Singapore to Seattle are during the month of April. You can find some of the cheapest flights from Singapore to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Singapore to Seattle

Sunday is one of the best days to book for cheap flights from Singapore to Seattle: 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 Singapore to Seattle

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 Singapore to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $416 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 Singapore to Seattle 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 Singapore to Seattle 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 Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $416 or cheap return flight from $665 from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
April is the cheapest month to fly from SIN to SEA. Traveling outside of peak seasons is often the key to finding better fares.
Which airlines fly direct from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
When departing from Changi Airport (SIN), you can board a direct flight to Seattle - Tacoma Intl. Airport (SEA) with Singapore Airlines.
What is the cheapest airline that flies from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from SIN to SEA. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
On average, there are 4 direct flights flying from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA) weekly. If you don't find one that fits your travel plans, think about a flight that includes a layover. Customize your search results on Expedia to include one stop or more and opt for the next best option.
What are the most popular departure times for flights from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
More passengers fly between SIN and SEA at 9 AM than at any other time. Looking to skip the crowds? Travel outside of rush hours and you're likely to save on your fare as well.
What day of the week has the most flights from SIN to SEA?
If you jet off on a Thursday, you'll get the greatest range of choices for flights from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
Take the earliest flight at around 9:00AM UTC+8, heading out of Changi Airport (SIN). You'll be traveling for roughly 14h 10m, reaching Seattle - Tacoma Intl. Airport (SEA) at approximately 7:10AM UTC-8.
How long does it take to fly from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight duration from SIN to SEA is 14 hours and 10 minutes, covering a total distance of 8,100 mi.
What is the best time to fly from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
Select a flight from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA) that takes off before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**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 Seattle from Changi Airport (SIN)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Changi Airport (SIN). Explore the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from SIN to SEA are typically more expensive. To lock in the lowest prices, start searching for flights as soon as possible. That being said, if you can play around with your travel dates, you may score a cheap fare right before your journey.
Is it cheaper to book a SIN to SEA flight and hotel package?
Securing a SIN to SEA flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of stays and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Changi Airport (SIN) to Seattle - Tacoma Intl. Airport (SEA)?
You can usually reschedule or cancel your SIN to SEA flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.