Singapore

$475+ Cheap flights from Seattle (SEA) to Singapore (SIN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
May 4 — May 111
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Find cheap flights from Seattle to Singapore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in March or February, booked 16 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from Seattle to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$777
(Air Canada)

One-way from

$478
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$886

Good round-trip deal

$931 or less

Good one-way deal

$350 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Singapore Changi flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Singapore Changi flights.
From Seattle/Tacoma Intl to Singapore Changi
One-way flight from Seattle/Tacoma Intl to Singapore Changi
Highest demand for flights based on searches. 6% potential increase in price ($68 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Singapore Changi.
Price to beat on a one-way flight from Seattle/Tacoma Intl to Singapore Changi.

Find flight deals from Seattle to Singapore

Cheapest flights from Seattle to Singapore
Explore the most affordable flight options available from Seattle to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Air Canada deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/237:15 pmSEA - SIN
2 stops42h 45mMultiple Airlines
Tue 10/79:45 amSIN - SEA
2 stops27h 31mMultiple Airlines
Deal found 4/27$770
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/291:45 pmSEA - SIN
2 stops42h 35mAir Canada
Thu 10/3010:00 amSIN - SEA
1 stop23h 26mAir Canada
Deal found 4/29$771
This ScholarTrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/710:15 amSEA - SIN
Nonstop16h 20mSingapore Airlines
Sun 9/216:40 pmSIN - SEA
1 stop29h 13mSingapore Airlines
Deal found 4/29$804
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:35 pmSEA - SIN
1 stop22h 45mPhilippine Airlines
Wed 10/2910:30 amSIN - SEA
1 stop24h 05mPhilippine Airlines
Deal found 4/29$818
This oojo deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/52:15 pmSEA - SIN
1 stop40h 15mAsiana Airlines
Mon 5/1210:50 pmSIN - SEA
1 stop28h 40mAsiana Airlines
Deal found 4/28$829
This CrystalTravel deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:00 amSEA - SIN
1 stop21h 10mKorean Air
Sun 12/71:30 amSIN - SEA
1 stop23h 30mKorean Air
Deal found 4/28$835
This oojo deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:40 amSEA - SIN
1 stop19h 55mChina Airlines
Mon 9/81:45 pmSIN - SEA
1 stop21h 00mChina Airlines
Deal found 4/28$876
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:15 pmSEA - SIN
1 stop25h 45mDelta
Wed 11/191:30 amSIN - SEA
1 stop27h 35mDelta
Deal found 4/27$889
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2912:52 pmSEA - SIN
1 stop26h 23mUnited Airlines
Mon 10/2710:10 amSIN - SEA
1 stop20h 15mUnited Airlines
Deal found 4/29$890
This KAYAK deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:35 pmSEA - SIN
2 stops46h 20mANA
Tue 11/1810:45 amSIN - SEA
1 stop18h 35mANA
Deal found 4/27$947
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/217:10 pmSEA - SIN
1 stop31h 45mTurkish Airlines
Wed 6/411:10 pmSIN - SEA
1 stop33h 05mTurkish Airlines
Deal found 4/29$949

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
Use the filters below to find and compare flights from Seattle to Singapore that are best for you.

Fly from

Seattle

Fly to

Singapore

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 9/23

7:15 pm-5:00 am

2 stops42h 45m

Singapore Changi

Tue 10/7

9:45 am-10:16 pm

2 stops27h 31m

$770

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 9/29

1:45 pm-11:20 pm

2 stops42h 35m

Singapore Changi

Thu 10/30

10:00 am-6:26 pm

1 stop23h 26m

$771

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/7

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Sun 9/21

6:40 pm-8:53 am

1 stop29h 13m

$804

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 10/1

11:35 pm-1:20 pm

1 stop22h 45m

Singapore Changi

Wed 10/29

10:30 am-7:35 pm

1 stop24h 05m

$818

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 5/13

2:15 pm-9:30 pm

1 stop40h 15m

Singapore Changi

Tue 5/20

10:50 pm-12:30 pm

1 stop28h 40m

$831

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 5/20

12:50 pm-11:40 pm

1 stop19h 50m

Singapore Changi

Mon 5/26

1:10 am-10:40 am

1 stop24h 30m

$847

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 8/31

1:40 am-12:35 pm

1 stop19h 55m

Singapore Changi

Mon 9/8

1:45 pm-7:45 pm

1 stop21h 00m

$876

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 9/29

12:52 pm-6:15 am

1 stop26h 23m

Singapore Changi

Mon 10/27

10:10 am-3:25 pm

1 stop20h 15m

$890

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 5/21

7:10 pm-5:55 pm

1 stop31h 45m

Singapore Changi

Wed 6/4

11:10 pm-5:15 pm

1 stop33h 05m

$949

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/28

7:00 am-6:40 am

2 stops56h 40m

Singapore Changi

Thu 10/30

6:35 am-3:25 pm

2 stops23h 50m

$957

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 27 results
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Compare providers for flights from Seattle to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Singapore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*2 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Singapore flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Singapore flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Singapore flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Seattle to Singapore flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Singapore trip
Airports
SEA

Use SEA Spot Saver to book security screening appointments in advance, reducing wait times significantly. Reserve online a few days before your flight.

Read more about SEAby Brandon Schultz
SIN

For quick city access from SIN, Grab rideshare is the fastest option, taking ~25 minutes. It's cheaper than taxis and convenient from all terminals.

Read more about SINby Yulia Denisyuk
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on SIN

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Seattle to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Singapore

How far ahead should I book a flight from Seattle to Singapore?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Singapore. Price data was last updated on April 25, 2025.

Booking 16 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Singapore?

Currently, September is the cheapest month in which you can book a flight from Seattle to Singapore (average of $1,011). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SIN?

Find hourly flight availability from Seattle to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s typically best to fly out from Seattle to Singapore at noon. Doing so could potentially save you 12% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Seattle to Singapore?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Singapore. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Seattle to Singapore flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated April 29, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, EVA Air and Korean Air from Seattle to Singapore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
8.3
Very good

Entertainment

9.0

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Seattle to Singapore flight route?

  • What are the cheapest airlines flying from Seattle to Singapore round-trip?

    Air Canada, at $777, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Asiana Airlines and Korean Air. Air Canada is priced at 26% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Singapore one-way?

    For one-way options, check prices for Korean Air. According to our data, you can fly for as low as $478. Users have also found prices from $481 and $483 on United Airlines and Delta, respectively.

  • What are the cheapest flights from Seattle to Singapore?

    Looking for the cheapest flight from Seattle to Singapore? While on average our users pay $2,078, our data indicates the cheapest price to be $327. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $646.

  • Where are the most common layover locations when flying from Seattle to Singapore?

  • What are some popular things to do or see while on a layover in Seoul?

    Dongdaemun Market, Myeongdong Cathedral, and Bukchon Hanok Village are currently the most popular points of interest in Seoul at the moment. Dongdaemun Market, Myeongdong Cathedral and Bukchon Hanok Village are located about 31.6 mi, 30.4 mi, and 30.6 mi, respectively from Incheon Intl if you are interested in checking them out. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $53 per day.

  • What are some popular points of interest to see during a layover in San Francisco?

    San Francisco travelers tend to visit Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium more than any other notable places. Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium can be accessed by traveling approximately 13.0 mi, 11.6 mi, and 11.1 mi, respectively from San Francisco. Travelers in need of a car in San Francisco can rent one for about $62 per day.

  • Where are the least popular layover locations for Seattle to Singapore flights?

  • Can I find deals for flights from Seattle to Singapore that include hotel bookings?

    Yes. In addition to deals on Seattle to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Singapore.

  • Can I find deals for business class flights from Seattle to Singapore?

    Yes. Cheapflights offers flight deals from Seattle to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Singapore?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Singapore (average of $1,011). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Singapore

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Seattle to Singapore

Discover the top 10 airlines that operate flights from Seattle to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$685Average$1,116FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$689Average$779FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$694Average$782FlexibilityNo cancel feeOn-time60%
Japan AirlinesCheapest$716Average$1,147FlexibilityNo cancel feeOn-time79%
Korean AirCheapest$722Average$884FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$725Average$917FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$728Average$901FlexibilityNo cancel feeOn-time67%
DeltaCheapest$750Average$1,234FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$899Average$1,057FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$972Average$1,075FlexibilityNo cancel feeOn-time75%

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