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$328+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
gen 28 — feb 41
mar 1/28
mar 2/4
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Singapore Changi are usually found in January or February, booked 78 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 gennaio 23, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$701
(United Airlines)

One-way from

$328
(FlightHub)

Popular in

December

Cheapest in

January

Average price

$912

Good round-trip deal

$822 or less

Good one-way deal

$334 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Singapore Changi flights.
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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. 2% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in January 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 gennaio 23, 2025.

This United Airlines deal was found by Cheapflights users on 1/22. 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.
gio 3/273:01 pmSEA - SIN
2 stops38h 14mUnited Airlines
mar 6/38:45 amSIN - SEA
1 stop19h 06mUnited Airlines
Deal found 1/22$701
This Booking.com deal was found by Cheapflights users on 1/22. 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.
dom 3/212:45 pmSEA - SIN
1 stop19h 50mAsiana Airlines
sab 3/81:55 amSIN - SEA
1 stop25h 00mAsiana Airlines
Deal found 1/22$702
This Gotogate deal was found by Cheapflights users on 1/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 1/2612:30 pmSEA - SIN
1 stop20h 20mJapan Airlines
mar 1/2810:25 pmSIN - SEA
2 stops36h 25mJapan Airlines
Deal found 1/23$716
This SmartFares deal was found by Cheapflights users on 1/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 3/611:00 amSEA - SIN
1 stop21h 10mKorean Air
mer 3/121:30 amSIN - SEA
1 stop23h 30mKorean Air
Deal found 1/22$723
This FlightHub deal was found by Cheapflights users on 1/21. 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.
gio 3/68:40 amSEA - SIN
Nonstop17h 00mSingapore Airlines
dom 3/239:00 amSIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 1/21$728
This Delta deal was found by Cheapflights users on 1/22. 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.
gio 3/1311:35 amSEA - SIN
1 stop26h 25mDelta
gio 3/2711:00 amSIN - SEA
1 stop18h 40mDelta
Deal found 1/22$751
This Trip.com deal was found by Cheapflights users on 1/22. 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.
dom 3/911:35 pmSEA - SIN
1 stop19h 00mPhilippine Airlines
sab 3/1512:35 amSIN - SEA
1 stop33h 35mPhilippine Airlines
Deal found 1/22$792
This American Airlines deal was found by Cheapflights users on 1/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 9/71:30 pmSEA - SIN
1 stop19h 50mAmerican Airlines
dom 9/218:05 amSIN - SEA
2 stops24h 23mAmerican Airlines
Deal found 1/22$837
This Traveloka deal was found by Cheapflights users on 1/22. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 3/99:40 amSEA - SIN
Nonstop17h 00mMultiple Airlines
sab 3/152:00 amSIN - SEA
1 stop32h 15mMultiple Airlines
Deal found 1/22$863

Find flights from Seattle to Singapore within your budget

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 gennaio 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

gio 3/27

3:01 pm-8:15 pm

2 stops38h 14m

Singapore Changi

mar 6/3

8:45 am-10:30 pm

2 stops28h 45m

$701

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom 3/2

12:45 pm-12:35 am

1 stop19h 50m

Singapore Changi

sab 3/8

1:55 am-10:55 am

1 stop25h 00m

$702

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

gio 3/6

11:00 am-12:10 am

1 stop21h 10m

Singapore Changi

sab 3/22

11:00 am-10:00 am

1 stop38h 00m

$723

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

gio 3/6

8:40 am-5:40 pm

Nonstop17h 00m

Singapore Changi

dom 3/23

9:00 am-8:10 am

Nonstop14h 10m

$728

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

gio 3/13

11:35 am-5:00 am

1 stop26h 25m

Singapore Changi

gio 3/27

11:00 am-2:40 pm

1 stop18h 40m

$751

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom 3/9

11:35 pm-9:35 am

1 stop19h 00m

Singapore Changi

sab 3/15

12:35 am-7:10 pm

1 stop33h 35m

$792

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom 3/9

9:40 am-5:40 pm

Nonstop17h 00m

Singapore Changi

sab 3/15

2:00 am-7:15 pm

1 stop32h 15m

$863

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

dom 3/16

9:40 am-5:40 pm

Nonstop17h 00m

$328

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

mar 3/18

5:00 am-8:15 pm

1 stop24h 15m

$371

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

lun 4/21

1:30 pm-12:20 am

1 stop19h 50m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 22 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice 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 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.

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.

Travel insights for flights from Seattle to Singapore

Get recent, data-driven insights about flights from Seattle to Singapore including ideal travel times, pricing trends, and more.

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 January 17, 2025.

Booking 78 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 gennaio 23, 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 January 21, 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 gennaio 23, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines, Philippine Airlines and Asiana Airlines 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
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

STARLUX Airlines
9.1
Wonderful
137 reviews
STARLUX Airlines
9.1
Wonderful
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Korean Air
8.5
Very good
1,038 reviews
STARLUX Airlines
9.1
Wonderful
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

EVA Air
8.4
Very good
1,252 reviews
STARLUX Airlines
9.1
Wonderful
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

ANA
8.4
Very good
849 reviews
STARLUX Airlines
9.1
Wonderful
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Japan Airlines
8.3
Very good
1,446 reviews
STARLUX Airlines
9.1
Wonderful
137 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

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, 42 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?

    United Airlines, at $701, was found to be the cheapest airline from Seattle to Singapore.Alternate airlines to your destination round-trip include Asiana Airlines and Korean Air. United Airlines is priced at 39% 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 $328. Users have also found prices from $371 and $373 on United 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 $1,556, our data indicates the cheapest price to be $306. The most popular route (Seattle/Tacoma Intl - Singapore Changi), is priced around $650.

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

    Flights departing from Seattle and landing in Singapore layover in Incheon most frequently. Incheon 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 Incheon?

    G Tower, Wolmido Amusement Park, and Moraenae Market are currently the most popular points of interest in Incheon at the moment. G Tower, Wolmido Amusement Park and Moraenae Market are located about 10.7 mi, 8.3 mi, and 14.7 mi, respectively from Incheon Intl if you are interested in checking them out. Those looking to explore during their layover in Incheon can rent a car from Incheon Intl for about $46 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 $49 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

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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 gennaio 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$694Average$782FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$706Average$1,156FlexibilityNo cancel feeOn-time71%
Philippine AirlinesCheapest$728Average$793FlexibilityNo cancel feeOn-time60%
Korean AirCheapest$728Average$997FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$734Average$1,152FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$765Average$1,146FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$786Average$1,042FlexibilityNo cancel feeOn-time79%
DeltaCheapest$885Average$1,254FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$899Average$1,003FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$911Average$1,270FlexibilityNo cancel feeOn-time67%
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