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$267+ Cheap flights from Seattle (SEA) to Singapore

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SIN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Seattle to Singapore

Keep the following information in mind while searching for Seattle to Singapore flight deals. Data was last updated September 11, 2025.

Round-trip from

$567
(oojo)

One-way from

$267
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$822

Good round-trip deal

$718 or less

Good one-way deal

$346 or less
From Seattle/Tacoma Intl to Singapore
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One-way flight from Seattle/Tacoma Intl to Singapore
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Highest demand for flights based on searches. 12% potential increase in price ($137 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Singapore.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Singapore.
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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 September 11, 2025.

This oojo deal was found by Cheapflights users on 9/11. 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.
Tue 10/289:45 amSEA - SIN
Nonstop17h 00mSingapore Airlines
Tue 11/49:00 amSIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 9/11$605
This CrystalTravel deal was found by Cheapflights users on 9/10. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1211:35 pmSEA - SIN
1 stop22h 45mPhilippine Airlines
Sun 10/192:35 pmSIN - SEA
1 stop19h 40mPhilippine Airlines
Deal found 9/10$617
This flugladen.de deal was found by Cheapflights users on 9/10. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:30 pmSEA - SIN
1 stop20h 05mPhilippine Airlines
Sat 11/112:40 amSIN - SEA
1 stop33h 55mPhilippine Airlines
Deal found 9/10$629
This oojo deal was found by Cheapflights users on 9/10. 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.
Wed 9/2411:35 pmSEA - SIN
1 stop32h 45mPhilippine Airlines
Sat 10/188:00 pmSIN - SEA
1 stop38h 15mPhilippine Airlines
Deal found 9/10$635
This oojo deal was found by Cheapflights users on 9/9. 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.
Sun 10/1211:35 pmSEA - SIN
1 stop18h 50mPhilippine Airlines
Tue 10/218:00 pmSIN - SEA
1 stop38h 15mPhilippine Airlines
Deal found 9/9$636
This oojo deal was found by Cheapflights users on 9/10. 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.
Tue 11/118:45 amSEA - SIN
Nonstop17h 00mSingapore Airlines
Sat 11/229:00 amSIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 9/10$639
This oojo deal was found by Cheapflights users on 9/11. 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.
Fri 11/148:45 amSEA - SIN
Nonstop17h 00mSingapore Airlines
Sat 11/229:00 amSIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 9/11$649
This flugladen.de deal was found by Cheapflights users on 9/9. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:45 amSEA - SIN
Nonstop17h 00mSingapore Airlines
Thu 11/139:00 amSIN - SEA
Nonstop14h 10mSingapore Airlines
Deal found 9/9$654
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 11/219:30 pmSEA - SIN
1 stop20h 05mPhilippine Airlines
Thu 12/42:10 pmSIN - SEA
1 stop20h 25mPhilippine Airlines
Deal found 9/11$655

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 September 11, 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 10/28

7:28 pm-7:00 am

1 stop20h 32m

Singapore Changi

Tue 11/4

10:10 am-1:38 pm

1 stop19h 28m

$756

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 3/2

12:10 am-9:55 pm

1 stop29h 45m

Singapore Changi

Sat 6/20

10:50 pm-2:55 pm

1 stop31h 05m

$759

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 2/9

12:10 am-9:55 pm

1 stop29h 45m

Singapore Changi

Sun 2/15

11:10 pm-1:55 pm

1 stop30h 45m

$759

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 10/30

7:25 am-5:00 am

2 stops30h 35m

Singapore Changi

Wed 11/12

1:35 am-4:22 pm

2 stops30h 47m

$768

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/28

2:15 pm-9:30 pm

1 stop40h 15m

Singapore Changi

Mon 10/6

10:50 pm-12:30 pm

1 stop28h 40m

$793

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 10/1

6:55 pm-6:25 pm

2 stops32h 30m

Singapore Changi

Sat 10/11

8:45 am-11:15 pm

1 stop29h 30m

$798

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 2/9

9:25 am-8:00 am

1 stop30h 35m

Singapore Changi

Mon 2/16

10:10 am-8:54 pm

1 stop26h 44m

$801

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 2/8

3:30 pm-8:15 pm

2 stops36h 45m

Singapore Changi

Mon 2/16

10:20 pm-11:10 am

1 stop28h 50m

$805

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 2/8

3:30 pm-8:15 pm

2 stops36h 45m

Singapore Changi

Tue 2/17

10:10 am-6:17 pm

1 stop24h 07m

$805

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Mon 2/9

3:30 pm-8:15 pm

2 stops36h 45m

Singapore Changi

Thu 2/19

10:20 pm-12:31 am

1 stop18h 11m

$805

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 results
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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

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Singapore (average of $1,002). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,665). 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 SG?

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 September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Singapore as you normally would.

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 September 7, 2025.

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

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 September 11, 2025.
Get a feel of what it's like to fly with Korean Air, Asiana Airlines, and Singapore Airlines from Seattle to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Singapore Airlines
8.1
Very good
1,365 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,937 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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.

  • What airport do you fly from for flights from Seattle to Singapore?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Singapore. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How popular is this Seattle to Singapore flight route?

    Within the past month, 88 users have taken a look at flights from Seattle/Tacoma Intl to Singapore.

  • How long is the flight from Seattle to Singapore?

    United Airlines, Asiana Airlines, and Korean Air can get you from Seattle to Singapore in just under 20h 32m. Your travel time can differ by up to 10h 03m. 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 to fly from Seattle to Singapore one-way?

    For one-way options, check prices for Philippine Airlines. According to our data, you can fly for as low as $296. Users have also found prices from $370 and $387 on Asiana Airlines and Air Canada, respectively.

  • What are the cheapest flights from Seattle to Singapore?

    On average you can expect to pay $2,133 for a flight from Seattle to Singapore. The cheapest flight overall is $284 while the most popular route, (Seattle/Tacoma Intl - Singapore Changi) is currently priced at $567.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Singapore (average of $1,002). Flying from Seattle to Singapore in December is currently the most expensive (average of $1,665). 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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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$598Average$973FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$687Average$827FlexibilityNo cancel feeOn-time79%
Asiana AirlinesCheapest$689Average$783FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$694Average$750FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$713Average$877FlexibilityNo cancel feeOn-time67%
ANACheapest$718Average$1,081FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$724Average$888FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$744Average$981FlexibilityNo cancel feeOn-time81%
DeltaCheapest$750Average$938FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$933Average$1,113FlexibilityNo cancel feeOn-time70%

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