Singapore

$298+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
Apr 9 — Apr 161
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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 September or October, booked 51 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

Cheap 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 March 10, 2026.

This oojo deal was found by Cheapflights users on 3/10. 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 9/612:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Mon 9/1410:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/10$585
This oojo deal was found by Cheapflights users on 3/6. 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.
Thu 8/2712:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Mon 9/1410:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/6$587
This FlightHub deal was found by Cheapflights users on 3/6. 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.
Mon 4/612:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Wed 6/1710:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/6$589
This oojo deal was found by Cheapflights users on 3/5. 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 11/3012:10 am
SEA
-
SIN
1 stop29h 45m
Asiana Airlines
Mon 12/2111:10 pm
SIN
-
SEA
1 stop30h 45m
Asiana Airlines
Deal found 3/5$590
This FlightHub deal was found by Cheapflights users on 3/5. 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.
Mon 9/712:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Mon 9/1410:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/5$593
This FlightHub deal was found by Cheapflights users on 3/5. 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.
Mon 11/2312:10 am
SEA
-
SIN
1 stop29h 45m
Asiana Airlines
Sun 11/2911:10 pm
SIN
-
SEA
1 stop30h 45m
Asiana Airlines
Deal found 3/5$594
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:10 am
SEA
-
SIN
1 stop29h 45m
Asiana Airlines
Sun 11/2211:10 pm
SIN
-
SEA
1 stop30h 45m
Asiana Airlines
Deal found 3/6$597
This oojo deal was found by Cheapflights users on 3/6. 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.
Tue 11/108:45 am
SEA
-
SIN
Nonstop17h 00m
Singapore Airlines
Tue 11/179:00 am
SIN
-
SEA
Nonstop14h 10m
Singapore Airlines
Deal found 3/6$599
This Booking.com deal was found by Cheapflights users on 3/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2412:10 am
SEA
-
SIN
1 stop29h 45m
Asiana Airlines
Wed 1/1311:10 pm
SIN
-
SEA
1 stop30h 45m
Asiana Airlines
Deal found 3/8$611
This oojo deal was found by Cheapflights users on 3/7. 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.
Thu 4/2312:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Mon 5/410:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/7$615
This BusinessClass deal was found by Cheapflights users on 3/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Sat 9/1210:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/10$617
This Asiana Airlines deal was found by Cheapflights users on 3/5. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:55 am
SEA
-
SIN
1 stop29h 35m
Asiana Airlines
Sat 9/510:50 pm
SIN
-
SEA
1 stop31h 05m
Asiana Airlines
Deal found 3/5$624

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$585
(oojo)

One-way from

$298
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$752

Good round-trip deal

$586 or less

Good one-way deal

$296 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. 13% potential increase in price ($134 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
Average for round-trip flights in March 2026
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.

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 March 10, 2026.
Use the filters below to find and compare flights from Seattle to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 8/24

1:05 pm-7:15 pm

1 stop39h 10m

Singapore Changi

Tue 9/1

7:30 am-1:37 pm

1 stop21h 07m

$670

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 4/1

7:12 am-6:35 pm

1 stop20h 23m

Singapore Changi

Tue 4/14

9:00 am-11:27 pm

1 stop29h 27m

$671

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 8/31

6:29 am-6:15 am

2 stops32h 46m

Singapore Changi

Fri 9/4

11:05 am-2:25 pm

1 stop18h 20m

$675

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sat 4/11

3:48 pm-6:35 pm

2 stops35h 47m

Singapore Changi

Thu 4/16

9:00 am-11:27 pm

1 stop29h 27m

$676

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 5/4

7:36 pm-6:45 am

1 stop20h 09m

Singapore Changi

Thu 5/7

9:00 am-7:48 pm

2 stops25h 48m

$676

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 8/26

7:20 am-11:55 pm

2 stops25h 35m

Singapore Changi

Thu 9/3

10:00 pm-10:40 am

1 stop27h 40m

$679

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 8/28

7:20 am-5:00 am

2 stops30h 40m

Singapore Changi

Sun 9/13

1:25 am-3:24 pm

2 stops28h 59m

$690

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 8/28

1:20 pm-11:55 pm

1 stop19h 35m

Singapore Changi

Sat 9/12

10:00 pm-3:24 pm

2 stops32h 24m

$820

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 7/15

2:30 pm-7:15 pm

2 stops37h 45m

Singapore Changi

Tue 8/11

1:25 am-9:51 pm

2 stops35h 26m

$825
Quickest round-trip

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 8/19

7:35 pm-6:15 am

1 stop19h 40m

Singapore Changi

Sat 8/29

11:05 am-2:25 pm

1 stop18h 20m

$831

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
GurufarePrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Singapore flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 March 6, 2026.

Booking 51 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 $496). Flying from Seattle to Singapore in December is currently the most expensive (average of $760). 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 March 10, 2026.

When flying from Seattle to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

The best insider tips for Seattle to Singapore flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Singapore trip
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on SIN

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.

Brandon Schultz

Brandon Schultz

Expert on SEA

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.

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 March 10, 2026.
Read through reviews of airlines operating flights from Seattle to Singapore, such as Korean Air,Singapore Airlines, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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?

  • How long is the flight from Seattle to Singapore?

    Delta and United Airlines can get you from Seattle to Singapore in just under 20h 23m. Your travel time can differ by up to 18h 47m. The distance from Seattle to Singapore is about 8059 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Singapore Airlines, at $520, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Philippine Airlines and Asiana Airlines. Singapore Airlines is priced at 40% 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 Singapore Airlines. According to our data, you can fly for as low as $260. Users have also found prices from $291 and $299 on Philippine Airlines and Japan Airlines, 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 $1,224, our data indicates the cheapest price to be $258. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $492.

  • 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, Lotte World, and Bukchon Hanok Village are currently the most popular points of interest in Seoul at the moment. Dongdaemun Market, Lotte World and Bukchon Hanok Village are located about 31.6 mi, 35.7 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 $49 per day.

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

    Tokyo travelers tend to visit Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower more than any other notable places. Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower can be accessed by traveling approximately 34.6 mi, 35.3 mi, and 36.7 mi, respectively from Tokyo Narita. Travelers in need of a car in Tokyo can rent one for about $59 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 $496). Flying from Seattle to Singapore in December is currently the most expensive (average of $760). 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

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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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$520Average$800FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$650Average$694FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$668Average$788FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$680Average$891FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$710Average$817FlexibilityNo cancel feeOn-time67%
DeltaCheapest$754Average$962FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$755Average$986FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$792Average$896FlexibilityNo cancel feeOn-time79%
ANACheapest$802Average$889FlexibilityNo cancel feeOn-time80%
China AirlinesCheapest$933Average$1,273FlexibilityNo cancel feeOn-time70%

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