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

View AU$719 flight on Sat, 14 Nov 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 5 Sept - Sat, 12 Sept
SIN
Singapore
SEA
Seattle
AU$1,162 Return, found 1 day ago
AU$1,162
Return
found 1 day ago
Select United flight, departing Sat, 5 Sept from Singapore to Seattle, returning Sat, 12 Sept, priced at AU$1,162 found 1 day ago
Air Canada
Sun, 20 Sept - Sun, 4 Oct
SIN
Singapore
SEA
Seattle
AU$1,165 Return, found 9 hours ago
AU$1,165
Return
found 9 hours ago
Select Air Canada flight, departing Sun, 20 Sept from Singapore to Seattle, returning Sun, 4 Oct, priced at AU$1,165 found 9 hours ago
Korean Air
Fri, 23 Oct - Sun, 1 Nov
SIN
Singapore
SEA
Seattle
AU$1,180 Return, found 3 days ago
AU$1,180
Return
found 3 days ago
Select Korean Air flight, departing Fri, 23 Oct from Singapore to Seattle, returning Sun, 1 Nov, priced at AU$1,180 found 3 days ago
Delta
Fri, 11 Sept - Sun, 20 Sept
SIN
Singapore
SEA
Seattle
AU$1,304 Return, found 1 day ago
AU$1,304
Return
found 1 day ago
Select Delta flight, departing Fri, 11 Sept from Singapore to Seattle, returning Sun, 20 Sept, priced at AU$1,304 found 1 day ago
EVA Airways
Sat, 22 Aug - Wed, 26 Aug
SIN
Singapore
SEA
Seattle
AU$1,438 Return, found 14 hours ago
AU$1,438
Return
found 14 hours ago
Select EVA Airways flight, departing Sat, 22 Aug from Singapore to Seattle, returning Wed, 26 Aug, priced at AU$1,438 found 14 hours ago
China Airlines
Sun, 20 Sept - Sun, 4 Oct
SIN
Singapore
SEA
Seattle
AU$1,454 Return, found 9 hours ago
AU$1,454
Return
found 9 hours ago
Select China Airlines flight, departing Sun, 20 Sept from Singapore to Seattle, returning Sun, 4 Oct, priced at AU$1,454 found 9 hours ago
Qatar Airways
Sun, 4 Oct - Thu, 8 Oct
SIN
Singapore
SEA
Seattle
AU$1,480 Return, found 2 days ago
AU$1,480
Return
found 2 days ago
Select Qatar Airways flight, departing Sun, 4 Oct from Singapore to Seattle, returning Thu, 8 Oct, priced at AU$1,480 found 2 days ago
Philippine Airlines
Sun, 20 Sept - Sun, 4 Oct
SIN
Singapore
SEA
Seattle
AU$1,505 Return, found 9 hours ago
AU$1,505
Return
found 9 hours ago
Select Philippine Airlines flight, departing Sun, 20 Sept from Singapore to Seattle, returning Sun, 4 Oct, priced at AU$1,505 found 9 hours ago
Singapore Airlines
Sun, 20 Dec - Sun, 17 Jan
SIN
Singapore
SEA
Seattle
AU$1,572 Return, found 2 days ago
AU$1,572
Return
found 2 days ago
Select Singapore Airlines flight, departing Sun, 20 Dec from Singapore to Seattle, returning Sun, 17 Jan, priced at AU$1,572 found 2 days ago
Cathay Pacific
Sun, 20 Sept - Sun, 4 Oct
SIN
Singapore
SEA
Seattle
AU$1,633 Return, found 9 hours ago
AU$1,633
Return
found 9 hours ago
Select Cathay Pacific flight, departing Sun, 20 Sept from Singapore to Seattle, returning Sun, 4 Oct, priced at AU$1,633 found 9 hours ago

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

May is typically the cheapest month to fly

From AU$923 - AU$1,542 per traveller.

Frequently asked questions

How much does a flight from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find one-way and return flights from SIN to SEA with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when SIN to SEA ticket fares go up or down.
What is the cheapest month to fly from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from SIN to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Only one airline offers direct flights from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Singapore Airlines operates 7 direct flights from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
How do I find cheap flights from Singapore (SIN) to Seattle, WA (SEA)?
To find a cheap flight from Singapore (SIN) to Seattle, WA (SEA), 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 Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Singapore (SIN) to Seattle, WA (SEA) 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. Cathay Pacific offers the most daily flights from Singapore (SIN) to Seattle, WA (SEA), 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 Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
While direct flights are limited, you'll find around 85 connecting flights per day from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.). This gives you plenty of options to choose from. Some common connection points include Hong Kong Intl. (HKG), Taoyuan Intl. (TPE), and Incheon Intl. (ICN).
What is the earliest flight from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 12:05 AM local time. This service is operated by Singapore Airlines and Lufthansa. This is a seasonal service, active in April, May, June, July, August, September, and October. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from Singapore Changi (SIN) to Seattle - Tacoma Intl. (SEA) on Wednesdays, with around 62 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Cathay Pacific, Singapore Airlines, and Korean Air. Flight options are notably more plentiful on Wednesdays compared to other days of the week, offering you a better selection.
What are the most popular departure times for flights from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the late evening, from 9pm to midnight. Many major carriers, including British Airways, Korean Air and United, offer flights during this window. This timing works well because you can maximize your time in Singapore before your evening flight, and you'll arrive in Seattle in the morning, ready to start your day.
How long does it take to fly from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A non-stop flight from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically takes around 14 hours 50 minutes. This route covers a distance of approximately 12,981 kilometres. If you opt for a flight with one stop, your travel time will be longer, usually around 18 hours 18 minutes. Flights with two or more stops will take even longer, averaging about 24 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Singapore (SIN-Changi) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between SIN and SEA.Airlines that offer business class service on this route include:
  • Korean Air
  • KLM
  • Thai Airways International
  • China Eastern Airlines
  • Garuda Indonesia
  • Lufthansa
  • Air France
  • British Airways
  • Turkish Airlines
  • Alaska Airlines
  • Asiana Airlines
  • Qatar Airways
  • Cathay Pacific
  • China Airlines
  • Emirates
  • Etihad Airways
  • Air Canada
  • Philippine Airlines
  • Malaysia Airlines
  • Juneyao Airlines
  • Japan Airlines
  • Singapore Airlines
  • Air India
  • Air Japan Company
  • Starlux Airlines
  • EVA Airways
  • Finnair
  • All Nippon Airways
  • Malindo Air
First class cabins are available on British Airways, Emirates, Japan Airlines, and Starlux Airlines.
How do I earn miles on a Singapore (SIN) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Singapore (SIN) to Seattle, WA (SEA) 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 Seattle, WA (SEA) from Singapore (SIN)?
If you're planning to travel to Seattle from Changi (SIN), you can fly directly into Seattle - Tacoma Intl. (SEA) which offers international flights and connections. Some flights may connect through major hubs like Hong Kong Intl. (HKG), Narita Intl. (NRT), or Dubai Intl. (DXB) before reaching Seattle. 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 Singapore (SIN) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Singapore (SIN) to Seattle, WA (SEA) 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 Singapore (SIN) to Seattle, WA (SEA) flight and hotel package?
Securing a Singapore (SIN) to Seattle, WA (SEA) flight and hotel package 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 Singapore (SIN) to Seattle, WA (SEA)?
If you booked your Singapore (SIN) to Seattle, WA (SEA) 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
Changi
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, 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
AU$1,161
Distance
12903 km
Average flight time
15 hours 45 mins

Book with confidence

Your quick guide to flights from Singapore to Seattle

Pick up great flights from Singapore to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Singapore to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Singapore to Seattle that take around hours.

Find cheap flights from Singapore to Seattle

From the great flight deals with prices currently ranging from AU$1,162 to AU$1,633, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Singapore to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in September.

Reasons to book your flight from Singapore to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Singapore to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Singapore to Seattle

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*Available to Expedia members.