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$332 Cheap Flights from Seattle (SEA) to Singapore (SIN)

View $332 flight on Tue, Nov 17, 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 $332 for one-way flights and $637 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Sat, May 1 - Sat, May 15
SEA
Seattle
SIN
Singapore
$637 Roundtrip, found 13 hours ago
$637
Roundtrip
found 13 hours ago
Select Singapore Airlines flight, departing Sat, May 1 from Seattle to Singapore, returning Sat, May 15, priced at $637 found 13 hours ago
Air Canada
Tue, Sep 15 - Tue, Nov 10
SEA
Seattle
SIN
Singapore
$692 Roundtrip, found 1 hour ago
$692
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Tue, Sep 15 from Seattle to Singapore, returning Tue, Nov 10, priced at $692 found 1 hour ago
Asiana Airlines
Mon, Sep 28 - Mon, Oct 5
SEA
Seattle
SIN
Singapore
$816 Roundtrip, found 1 day ago
$816
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Mon, Sep 28 from Seattle to Singapore, returning Mon, Oct 5, priced at $816 found 1 day ago
United
Tue, Sep 15 - Tue, Nov 10
SEA
Seattle
SIN
Singapore
$822 Roundtrip, found 1 hour ago
$822
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Sep 15 from Seattle to Singapore, returning Tue, Nov 10, priced at $822 found 1 hour ago
Delta
Tue, Sep 15 - Tue, Nov 10
SEA
Seattle
SIN
Singapore
$822 Roundtrip, found 1 hour ago
$822
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Sep 15 from Seattle to Singapore, returning Tue, Nov 10, priced at $822 found 1 hour ago
Korean Air
Wed, Sep 23 - Tue, Sep 29
SEA
Seattle
SIN
Singapore
$825 Roundtrip, found 1 hour ago
$825
Roundtrip
found 1 hour ago
Select Korean Air flight, departing Wed, Sep 23 from Seattle to Singapore, returning Tue, Sep 29, priced at $825 found 1 hour ago
All Nippon Airways
Wed, Feb 17 - Mon, Mar 1
SEA
Seattle
SIN
Singapore
$857 Roundtrip, found 1 hour ago
$857
Roundtrip
found 1 hour ago
Select All Nippon Airways flight, departing Wed, Feb 17 from Seattle to Singapore, returning Mon, Mar 1, priced at $857 found 1 hour ago
Philippine Airlines
Wed, Sep 23 - Tue, Sep 29
SEA
Seattle
SIN
Singapore
$901 Roundtrip, found 1 hour ago
$901
Roundtrip
found 1 hour ago
Select Philippine Airlines flight, departing Wed, Sep 23 from Seattle to Singapore, returning Tue, Sep 29, priced at $901 found 1 hour ago
Cathay Pacific
Tue, Sep 15 - Tue, Nov 10
SEA
Seattle
SIN
Singapore
$925 Roundtrip, found 1 hour ago
$925
Roundtrip
found 1 hour ago
Select Cathay Pacific flight, departing Tue, Sep 15 from Seattle to Singapore, returning Tue, Nov 10, priced at $925 found 1 hour ago
Japan Airlines
Wed, Feb 3 - Mon, Feb 22
SEA
Seattle
SIN
Singapore
$964 Roundtrip, found 8 hours ago
$964
Roundtrip
found 8 hours ago
Select Japan Airlines flight, departing Wed, Feb 3 from Seattle to Singapore, returning Mon, Feb 22, priced at $964 found 8 hours 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 $692
SIN
Changi
Cheapest
Average driving time to city center18 min
Flights from $692

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

October is typically the cheapest month to fly

From $806 - $950 per traveler.

What you need to know for your flight from Seattle - Tacoma Intl. to Changi

Seattle (SEA) to Singapore (SIN) at a glance

Explore a range of airlines offering flights from Seattle (SEA) to Singapore (SIN) on this international long-haul journey. Compare various options from full-service carriers to discover the best flight rates from Seattle that suit your budget, schedule, and travel plans while you immerse yourself in Singapore's renowned attractions and neighborhoods. Get all the essential details for your trip from Seattle-Tacoma International Airport (SEA) to Changi Airport (SIN).

  • Fastest flight duration: around 17 hours non-stop
  • Route distance: roughly 8,100 miles (13,040 km)
  • Flights per week: around 11 departures on average
  • Typical fares (one-way): economy tickets often range from $325–$1085, depending on seasonality and how far ahead you book

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

According to recent traveler bookings, the top airlines flying from Seattle to Singapore are often selected for their one-stop and non-stop options. Popular layovers include Incheon International Airport (ICN) with a layover of about 2 hours and 15 minutes, San Francisco International Airport (SFO) with a 2-hour layover, and Taoyuan International Airport (TPE) with approximately 3 hours. This variety allows you to mix and match price, total travel time, and cabin class to create the ideal travel itinerary.

  • Singapore Airlines: This full-service airline provides non-stop flights, with one-way ticket prices generally falling between $325 and $3760. It represents about 33% of all departures on this route, with a total travel duration of 17 hours.
  • United: Offering one-stop service, this full-service carrier has one-way fares that typically range from $340 to $890. United accounts for around 20% of flights on this route, with an in-flight duration of 18 hours and 15 minutes, leading to an overall travel time of approximately 21 hours due to layovers.
  • EVA Airways: This full-service airline also offers one-stop flights, with one-way fares usually between $555 and $3310. It constitutes about 8% of the departures on this route, featuring a similar in-flight duration of 18 hours and 15 minutes, resulting in a total journey time of roughly 21 hours, including layover.
  • Delta: Known for its one-stop service, Delta is a full-service carrier with one-way fares ranging from $375 to $905. It makes up around 6% of departures on this route, with an in-flight time of 18 hours and 15 minutes, leading to a total travel duration of about 21 hours, factoring in the layover.
  • Starlux Airlines: This full-service carrier provides one-stop flights, with one-way fares typically between $555 and $2925. Starlux accounts for approximately 6% of flights on this route, with an in-flight duration of 18 hours and 15 minutes, totaling around 21 hours including layover time.

Travelers have the option to upgrade their flight from Seattle to Singapore with several top airlines. Singapore Airlines and All Nippon Airways both provide business class and premium economy service, while Philippine Airlines features a business class offering for a more comfortable journey.

Best time to fly from Seattle (SEA) to Singapore (SIN)

The most popular months for travelers flying from Seattle to Singapore are January, February, and December, when peak temperatures in Singapore reach up to 80.2°F in February. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 82°F. For better deals, July usually offers the lowest average one-way fare around $571. Flight availability peaks in December, with approximately 14 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: July usually offers good deals with average one-way fare around $571, roughly 31% cheaper than the yearly average.
  • Another budget-friendly time to fly: August typically offers an average one-way fare of around $582.
  • Most flight options: December has the highest number of flights from Seattle to Singapore, with approximately 14 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January79.7°F (26.5°C)High11$747
February80.2°F (26.8°C)High9$786
March81.3°F (27.4°C)Average10$948
April82.6°F (28.1°C)Average9$918
May83.3°F (28.5°C)Low11$666
June82.9°F (28.3°C)Average12$1005
July82.4°F (28.0°C)Average11$571
August82.2°F (27.9°C)Average12$582
September82.0°F (27.8°C)Low9$647
October82.2°F (27.9°C)Low10$1132
November81.3°F (27.4°C)Average11$650
December80.2°F (26.8°C)High14$1363

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Seattle (SEA) to Singapore (SIN)

  • Seattle to Paya Lebar (SEA-QPG): Located approximately 6 miles from Changi Airport (SIN), Paya Lebar Air Base Airport (QPG) serves as a convenient option.
  • Seattle to Singapore (BFI-SIN): Boeing Field Airport (BFI) is about 6 miles from Seattle - Tacoma International Airport (SEA), providing easy access to the region.
  • Seattle to Singapore (SEA-XSP): Seletar Airport (XSP) lies roughly 10 miles away from Changi Airport (SIN), offering another travel alternative.

How to find the best prices for flights from Seattle (SEA) to Singapore (SIN)

Getting some of the best deals on flights from Seattle to Singapore is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, which coincides with when most travelers make their reservations. Evening departures between 6 PM and midnight often provide lower prices, while morning flights from 5 AM to noon are the most popular. Additionally, flying on Friday tends to be cheaper, although Thursday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Singapore hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Changi Airport from Seattle - Tacoma International Airport

Singapore welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Singapore efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Singapore, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Changi Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Changi Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Changi Airport, F Station, a metro station, is located about 0.1 miles away on foot, providing easy access to public transport, while Tanah Merah Ferry Terminal, a ferry terminal, is situated about 4.9 miles away by car, connecting travelers to nearby islands.

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 $332 and cheap return flights from $637 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, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, EVA Airways, Emirates, Japan Airlines, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, STARLUX Airlines, Singapore Airlines, Turkish Airlines, United
Roundtrip price
$637
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 May. 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 $332 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.

 

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