$372 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View $372 flight on Tue, Aug 25, 2026Opens in a new window

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

Cheap Flights from Seattle to Singapore (SEA-SIN)

Prices were available within the past 7 days and start at $372 for one-way flights and $803 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Fri, Sep 18 - Sat, Sep 26
SEA
Seattle
SIN
Singapore
$803 Roundtrip, found 5 days ago
$803
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Fri, Sep 18 from Seattle to Singapore, returning Sat, Sep 26, priced at $803 found 5 days ago
Singapore Airlines
Thu, Oct 1 - Thu, Oct 15
SEA
Seattle
SIN
Singapore
$850 Roundtrip, found 3 days ago
$850
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Thu, Oct 1 from Seattle to Singapore, returning Thu, Oct 15, priced at $850 found 3 days ago
United
Wed, Sep 30 - Wed, Oct 7
SEA
Seattle
SIN
Singapore
$870 Roundtrip, found 5 days ago
$870
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 30 from Seattle to Singapore, returning Wed, Oct 7, priced at $870 found 5 days ago
Korean Air
Mon, Nov 16 - Mon, Nov 30
SEA
Seattle
SIN
Singapore
$873 Roundtrip, found 5 days ago
$873
Roundtrip
found 5 days ago
Select Korean Air flight, departing Mon, Nov 16 from Seattle to Singapore, returning Mon, Nov 30, priced at $873 found 5 days ago
Philippine Airlines
Thu, Sep 3 - Wed, Sep 9
SEA
Seattle
SIN
Singapore
$882 Roundtrip, found 3 days ago
$882
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Thu, Sep 3 from Seattle to Singapore, returning Wed, Sep 9, priced at $882 found 3 days ago
All Nippon Airways
Sun, Jul 19 - Fri, Sep 25
SEA
Seattle
SIN
Singapore
$907 Roundtrip, found 5 days ago
$907
Roundtrip
found 5 days ago
Select All Nippon Airways flight, departing Sun, Jul 19 from Seattle to Singapore, returning Fri, Sep 25, priced at $907 found 5 days ago
Air Canada
Thu, May 14 - Tue, May 26
SEA
Seattle
SIN
Singapore
$954 Roundtrip, found 3 days ago
$954
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, May 14 from Seattle to Singapore, returning Tue, May 26, priced at $954 found 3 days ago
Delta
Mon, Sep 14 - Tue, Sep 22
SEA
Seattle
SIN
Singapore
$970 Roundtrip, found 10 hours ago
$970
Roundtrip
found 10 hours ago
Select Delta flight, departing Mon, Sep 14 from Seattle to Singapore, returning Tue, Sep 22, priced at $970 found 10 hours ago
Cathay Pacific
Wed, Sep 2 - Mon, Sep 7
SEA
Seattle
SIN
Singapore
$1,013 Roundtrip, found 3 days ago
$1,013
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Wed, Sep 2 from Seattle to Singapore, returning Mon, Sep 7, priced at $1,013 found 3 days ago
China Airlines
Mon, Feb 15 - Thu, Feb 25
SEA
Seattle
SIN
Singapore
$1,018 Roundtrip, found 2 days ago
$1,018
Roundtrip
found 2 days ago
Select China Airlines flight, departing Mon, Feb 15 from Seattle to Singapore, returning Thu, Feb 25, priced at $1,018 found 2 days ago

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 $1,042
SIN
Changi
Cheapest
Average driving time to city center18 min
Flights from $1,042

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

September is typically the cheapest month to fly

From $614 - $907 per traveler.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) cost?
You can find cheap one-way flights from $372 and cheap return flights from $803 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) with Expedia. One-way flights generally range between $437 and $6710, and roundtrip flights usually range from $857 to $8366. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
September is the cheapest month to fly from Seattle, WA (SEA) to Singapore (SIN), with average return fares around $883. This price is about 17% lower than the average throughout the year, as September typically experiences lower travel demand. Other economical months to consider are January and March.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
Singapore Airlines offers around 7 weekly direct flights from SEA to SIN.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
Singapore Airlines is one of the cheapest airlines offering nonstop flights from Seattle, WA (SEA) to Singapore (SIN) with return tickets starting from around $967. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
The best airline to fly with from Seattle, WA (SEA) to Singapore (SIN) will differ from traveler to traveler. If you like to fly early, Singapore Airlines offers early morning flights. If price is the most important factor, Singapore Airlines typically offers the lowest fares. Alaska Airlines offers the most daily flights from SEA to SIN, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
The best times to fly from Seattle to Singapore are September and March, with average return flight prices around $883. September is a great choice as it often features lower fares after the summer rush, while March offers pleasant weather in Singapore.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
On average, there are around 1 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to Changi (SIN). For more options, look at flights that include layovers.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
The earliest flight from Seattle (SEA) to Singapore (SIN) typically departs at around 12:05 AM, operated by Starlux Airlines. An overnight flight like this can help you arrive in Singapore ready to start your adventures right away. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
The most popular departure times for flights from Seattle (SEA) to Singapore (SIN) are in the late afternoon, from 3pm to 6pm. About 28% of passengers prefer this time window. Many major carriers, including Emirates and Qatar Airways, offer flights during this window. This timing is popular because it allows travelers to maximize their day in Seattle before heading off on their journey.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
Flying nonstop from SEA to SIN takes around 17 hours, with the route covering approximately 8,066 miles. Flights with a layover typically take 3 hours 50 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
You can fly business class between SEA and SIN. Airlines that offer business class service on this route include:

  • Emirates
  • Qatar Airways
  • Cathay Pacific
  • Delta Air Lines
  • All Nippon Airways
  • American Airlines
  • Turkish Airlines
  • Korean Air
  • Hawaiian Airlines
  • Air Canada

First class is available with Emirates and British Airways.
How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
A direct, return business class ticket from Seattle (SEA) to Singapore (SIN) typically costs between $10,309 - $14,471. A non-stop, one-way business class flight is usually around $4,149 - $5,978. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Singapore from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly into Changi (SIN) to reach Singapore. Some flights may connect through major hubs like San Francisco Intl. (SFO), Los Angeles Intl. (LAX), Vancouver Intl. (YVR) before reaching Singapore. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) Singapore Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Changi
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, STARLUX Airlines, Singapore Airlines, Turkish Airlines, United
Roundtrip price
$803
Distance
8064 mi
Average flight time
15 hours 20 mins

Book with confidence

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 September. 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 $372 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.

 

Seattle to Singapore Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia