A large indoor waterfall, a glass ceiling, and lush greenery.

CA $559 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View CA $559 flight on Tue, Sep 15, 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at CA $559 for one-way flights and CA $1,133 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Oct 25 - Sun, Nov 8
SEA
Seattle
SIN
Singapore
CA $1,133 Roundtrip, found 1 day ago
CA $1,133
Roundtrip
found 1 day ago
Select United flight, departing Sun, Oct 25 from Seattle to Singapore, returning Sun, Nov 8, priced at CA $1,133 found 1 day ago
Air Canada
Thu, Sep 10 - Thu, Sep 17
SEA
Seattle
SIN
Singapore
CA $1,133 Roundtrip, found 12 hours ago
CA $1,133
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Thu, Sep 10 from Seattle to Singapore, returning Thu, Sep 17, priced at CA $1,133 found 12 hours ago
Delta
Sun, Nov 1 - Thu, Nov 12
SEA
Seattle
SIN
Singapore
CA $1,144 Roundtrip, found 23 hours ago
CA $1,144
Roundtrip
found 23 hours ago
Select Delta flight, departing Sun, Nov 1 from Seattle to Singapore, returning Thu, Nov 12, priced at CA $1,144 found 23 hours ago
Asiana Airlines
Mon, Oct 5 - Sun, Oct 11
SEA
Seattle
SIN
Singapore
CA $1,145 Roundtrip, found 5 days ago
CA $1,145
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Mon, Oct 5 from Seattle to Singapore, returning Sun, Oct 11, priced at CA $1,145 found 5 days ago
Korean Air
Mon, Mar 29 - Thu, Apr 8
SEA
Seattle
SIN
Singapore
CA $1,150 Roundtrip, found 2 days ago
CA $1,150
Roundtrip
found 2 days ago
Select Korean Air flight, departing Mon, Mar 29 from Seattle to Singapore, returning Thu, Apr 8, priced at CA $1,150 found 2 days ago
All Nippon Airways
Thu, Sep 10 - Thu, Sep 17
SEA
Seattle
SIN
Singapore
CA $1,194 Roundtrip, found 12 hours ago
CA $1,194
Roundtrip
found 12 hours ago
Select All Nippon Airways flight, departing Thu, Sep 10 from Seattle to Singapore, returning Thu, Sep 17, priced at CA $1,194 found 12 hours ago
Singapore Airlines
Sun, Nov 1 - Sun, Nov 15
SEA
Seattle
SIN
Singapore
CA $1,219 Roundtrip, found 15 hours ago
CA $1,219
Roundtrip
found 15 hours ago
Select Singapore Airlines flight, departing Sun, Nov 1 from Seattle to Singapore, returning Sun, Nov 15, priced at CA $1,219 found 15 hours ago
Japan Airlines
Thu, Aug 27 - Thu, Sep 10
SEA
Seattle
SIN
Singapore
CA $1,351 Roundtrip, found 1 day ago
CA $1,351
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Thu, Aug 27 from Seattle to Singapore, returning Thu, Sep 10, priced at CA $1,351 found 1 day ago
Cathay Pacific
Thu, Sep 10 - Thu, Sep 17
SEA
Seattle
SIN
Singapore
CA $1,352 Roundtrip, found 12 hours ago
CA $1,352
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Thu, Sep 10 from Seattle to Singapore, returning Thu, Sep 17, priced at CA $1,352 found 12 hours ago
Philippine Airlines
Thu, Apr 1 - Sat, Apr 24
SEA
Seattle
SIN
Singapore
CA $1,413 Roundtrip, found 4 days ago
CA $1,413
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Thu, Apr 1 from Seattle to Singapore, returning Sat, Apr 24, priced at CA $1,413 found 4 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 centre is 18 minutes. Flights from CA $1,133
SIN
Changi
Cheapest
Average driving time to city centre18 min
Flights from CA $1,133

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

October is typically the cheapest month to fly

From CA $1,130 - CA $1,331 per traveller.

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 CA $559 and cheap return flights from CA $1,133 SEA to SIN with Expedia. Return flights often range between CA$1630 and CA$9073. 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 SEA to SIN ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
September is typically the cheapest month to fly from Seattle - Tacoma Intl. (SEA) to Changi (SIN), with average return fares around CA$1227. September often sees lower prices as it falls outside of peak summer travel and major holiday periods, when demand tends to decrease. Other cheap months to fly from Seattle - Tacoma Intl. (SEA) to Changi (SIN) include January and March.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
Only one airline offers direct flights from Seattle - Tacoma Intl. (SEA) to Changi (SIN). Singapore Airlines operates 7 direct flights from Seattle - Tacoma Intl. to Changi every week.
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 return flights from Seattle - Tacoma Intl. (SEA) to Changi (SIN), with tickets starting from around CA$1317 for flights that can be booked for departure within the next year. Hainan Airlines offers one of the cheapest connecting return flights from Seattle - Tacoma Intl. (SEA) to Changi (SIN) with a layover in Jiangbei Intl. (CKG), starting from around CA$1696. 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.
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 - Tacoma Intl. (SEA) to Changi (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 Seattle - Tacoma Intl. (SEA) to Changi (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 cheapest months to fly from Seattle-Tacoma Intl. (SEA) to Singapore (SIN) are typically September and March, with average return flights around CA$1227. The most popular months for this route, offering plenty of flight options, are August and May. While there isn't a single month that is both the cheapest and most popular, you can consider September or March for better value, or August and May if having a wide selection of flights is your top priority.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
While direct flights from Seattle - Tacoma Intl. (SEA) to Singapore (SIN) are minimal, you'll find approximately 65 connecting flights per day. This gives you plenty of options to choose from. Some common connection points include Los Angeles Intl. (LAX), San Francisco Intl. (SFO), and Vancouver Intl. (YVR).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Changi (SIN) typically departs around 12:10 AM local time, operated by EVA Airways. This is a seasonal service, active in January, February, March, November, and December. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
You'll find the most flight options from Seattle - Tacoma Intl. (SEA) to Changi (SIN) on Tuesdays, with around 89 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Alaska Airlines, United, and Delta.
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 - Tacoma Intl. (SEA) to Changi (SIN) are in the afternoon, from 3pm to 6pm. Many major carriers, including Alaska Airlines, Emirates and All Nippon Airways, offer flights during this window. Many travellers prefer this time as it allows for a full day of activities before heading to the airport, and you'll arrive in Singapore ready to start your day.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
A direct flight from Seattle - Tacoma Intl. (SEA) to Singapore (SIN) typically takes around 16 hours 18 minutes. This journey covers a distance of approximately 13,000 kilometres. If you opt for a flight with one stop, your travel time will be longer, usually around 20 hours. Flights with two or more stops generally take about 24 hours 48 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Singapore (SIN-Changi)?
Yes, you can fly business class or first class between SEA and SIN. Airlines that offer business class service on this route include:
  • Starlux Airlines
  • Edelweiss Air
  • Air Canada
  • Singapore Airlines
  • Emirates
  • Skywest Air
  • Turkish Airlines
  • Alaska Airlines
  • Asiana Airlines
  • Korean Air
  • Philippine Airlines
  • Lufthansa
  • Air France
  • Qatar Airways
  • Virgin Atlantic
  • China Airlines
  • Horizon Air
  • Japan Airlines
  • Aer Lingus
  • Cathay Pacific
  • Delta
  • Hawaiian Airlines
  • British Airways
  • All Nippon Airways
  • United
  • Finnair
  • EVA Airways
  • American Airlines
First class cabins are available on Starlux Airlines, Emirates, and British Airways.
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 (SIN) from Seattle, WA (SEA)?
If you're planning to travel to Singapore from Seattle - Tacoma Intl. (SEA), you can fly directly into Changi Airport (SIN) which offers international flights and connections. Some flights may connect through major hubs like San Francisco Intl. (SFO), Los Angeles Intl. (LAX), or 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) 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 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, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines
Roundtrip price
CA $1,132
Distance
12903 km
Average flight time
15 hours 20 mins

Book with confidence

Seattle to Singapore Flights

The easy way to book your flights from Seattle to Singapore 

With Expedia, it’s simple to find and book flights to Singapore from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Changi, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Singapore today, tomorrow, or this week.  

 

Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Changi, SIN 

Sort your search results by price to find great deals on your flight from Seattle to Singapore—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Singapore from Seattle currently is just CA $1,133 rising to CA $1,413.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Singapore  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Singapore from Seattle 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Singapore with Expedia today.

Seattle to Singapore Flights

Explore a world of travel with Expedia

*Available to Expedia members.