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$387+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in February or March, booked 16 days in advance, depart on a Tuesday or Sunday 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 June 12, 2025.

Round-trip from

$808
(Air Canada)

One-way from

$387
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,256

Good round-trip deal

$795 or less

Good one-way deal

$342 or less
From Seattle/Tacoma Intl to Singapore Changi
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One-way flight from Seattle/Tacoma Intl to Singapore Changi
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Highest demand for flights based on searches. 9% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Singapore Changi.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Singapore Changi.
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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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:45 pmSEA - SIN
2 stops42h 35mMultiple Airlines
Wed 9/179:45 amSIN - SEA
2 stops23h 51mMultiple Airlines
Deal found 6/10$808
This Trip.com deal was found by Cheapflights users on 6/12. 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.
Mon 8/42:30 pmSEA - SIN
1 stop40h 00mAsiana Airlines
Fri 8/2910:50 pmSIN - SEA
1 stop28h 55mAsiana Airlines
Deal found 6/12$810
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Fri 7/410:00 amSEA - SIN
1 stop30h 05mAir Canada
Sun 7/139:10 amSIN - SEA
1 stop20h 06mAir Canada
Deal found 6/12$819
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Sun 9/710:15 amSEA - SIN
Nonstop16h 20mSingapore Airlines
Sun 9/219:00 amSIN - SEA
Nonstop14h 45mSingapore Airlines
Deal found 6/12$835
This oojo deal was found by Cheapflights users on 6/9. 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 7/81:20 pmSEA - SIN
1 stop24h 40mKorean Air
Mon 9/810:30 pmSIN - SEA
1 stop27h 10mKorean Air
Deal found 6/9$854
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Fri 9/1211:35 pmSEA - SIN
1 stop22h 45mPhilippine Airlines
Fri 9/192:35 pmSIN - SEA
1 stop19h 40mPhilippine Airlines
Deal found 6/11$864
This Delta deal was found by Cheapflights users on 6/11. 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.
Mon 8/1112:55 pmSEA - SIN
1 stop40h 00mDelta
Sun 8/171:10 amSIN - SEA
1 stop27h 51mDelta
Deal found 6/11$891
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/68:57 amSEA - SIN
2 stops30h 18mUnited Airlines
Tue 9/28:45 amSIN - SEA
1 stop19h 43mUnited Airlines
Deal found 6/10$895
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/157:34 pmSEA - SIN
2 stops30h 41mANA
Wed 7/2311:05 amSIN - SEA
1 stop18h 20mANA
Deal found 6/10$896
This oojo deal was found by Cheapflights users on 6/11. 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
Sun 9/142:00 amSIN - SEA
1 stop32h 45mChina Airlines
Deal found 6/11$928
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Sat 6/216:05 amSEA - SIN
2 stops32h 20mChina Eastern
Tue 7/14:35 pmSIN - SEA
2 stops39h 25mChina Eastern
Deal found 6/11$976
This Turkish Airlines deal was found by Cheapflights users on 6/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/87:10 pmSEA - SIN
1 stop31h 45mTurkish Airlines
Fri 8/810:15 amSIN - SEA
1 stop39h 20mTurkish Airlines
Deal found 6/10$987

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 June 12, 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

Wed 9/10

1:45 pm-11:20 pm

2 stops42h 35m

Singapore Changi

Wed 9/17

9:45 am-6:36 pm

2 stops23h 51m

$808

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 8/4

2:30 pm-9:30 pm

1 stop40h 00m

Singapore Changi

Fri 8/29

10:50 pm-12:45 pm

1 stop28h 55m

$810

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 7/4

10:00 am-7:05 am

1 stop30h 05m

Singapore Changi

Sun 7/13

9:10 am-2:16 pm

1 stop20h 06m

$819

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/7

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Sun 9/21

9:00 am-8:45 am

Nonstop14h 45m

$835

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 7/8

1:20 pm-5:00 am

1 stop24h 40m

Singapore Changi

Mon 9/8

10:30 pm-10:40 am

1 stop27h 10m

$854

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Fri 9/12

11:35 pm-1:20 pm

1 stop22h 45m

Singapore Changi

Fri 9/19

2:35 pm-7:15 pm

1 stop19h 40m

$864

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 8/11

12:55 pm-7:55 pm

1 stop40h 00m

Singapore Changi

Sun 8/17

1:10 am-2:01 pm

1 stop27h 51m

$891

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 8/6

8:57 am-6:15 am

2 stops30h 18m

Singapore Changi

Tue 9/2

8:45 am-1:28 pm

1 stop19h 43m

$895

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Tue 7/15

7:34 pm-5:15 pm

2 stops30h 41m

Singapore Changi

Wed 7/23

11:05 am-2:25 pm

1 stop18h 20m

$896

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 8/31

1:40 am-12:35 pm

1 stop19h 55m

Singapore Changi

Sun 9/14

2:00 am-7:45 pm

1 stop32h 45m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 27 results
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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 for free security screening appointments to reduce wait times. Reserve online a few days before your flight.

Read more about SEAby Brandon Schultz
SIN

For quick city access, use the Grab rideshare app from SIN. It's faster and cheaper than taxis, especially from Terminal 4.

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 June 9, 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 June 12, 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 June 8, 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 June 12, 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.
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
ANA
8.3
Very good
882 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Crew

9.3

Overall

9.1

Food

8.8

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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?

    Within the past month, 61 users have taken a look at flights from Seattle/Tacoma Intl to Singapore Changi.

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

    Asiana Airlines, at $810, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Air Canada and Singapore Airlines. Asiana Airlines is priced at 18% 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 $387. Users have also found prices from $428 and $454 on Asiana Airlines and Korean Air, 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 $2,217, our data indicates the cheapest price to be $325. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $547.

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

    Flights departing from Seattle and landing in Singapore layover in Seoul most frequently. Seoul is followed by San Francisco in terms of the most popular layover location on flights from Seattle to Singapore.

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

    Dongdaemun Market, Bukchon Hanok Village, and Lotte World are currently the most popular points of interest in Seoul at the moment. Dongdaemun Market, Bukchon Hanok Village and Lotte World are located about 31.6 mi, 30.6 mi, and 35.7 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 $54 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 $56 per day.

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

    The least popular layover on flights from Seattle to Singapore is Tokyo.

  • 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.
Portland to Singapore flights
Spokane to Singapore flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$684Average$1,107FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$689Average$785FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$694Average$771FlexibilityNo cancel feeOn-time60%
Japan AirlinesCheapest$703Average$875FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$725Average$889FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$727Average$892FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$728Average$968FlexibilityNo cancel feeOn-time81%
DeltaCheapest$750Average$1,239FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$933Average$1,096FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$966Average$1,167FlexibilityNo cancel feeOn-timeN/A

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