Cheap flights from Singapore to Seattle from S$ 515

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 20-9. Fares are subject to change and may not be available on all flights or dates of travel.
SIN — SEA
20 Aug — 27 Aug1
1 adult

Cheapflights Tip: The best prices from Singapore Changi to Seattle/Tacoma Intl are usually found in February or March, booked 41 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Singapore to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Singapore (SIN) to Seattle (SEA). 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 15 August 2025.

Round-trip from

S$ 781

One-way from

S$ 515

Popular in

August

Cheapest in

February

Average price

S$ 1,401

Good round-trip deal

S$ 1,434 or less
United Airlines
  • United Airlines
  • 27-8-30-8
  • 2 total stops
  • 53h 38m total
  • Singapore to Seattle
Philippine Airlines
  • Philippine Airlines
  • 20-9
  • 1 total stop
  • 33h 55m total
  • Singapore to Seattle
Highest demand for flights based on searches. 4% potential increase in price (S$ 62 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (S$ 28 potential savings vs. average return price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Singapore Changi to Seattle/Tacoma Intl.

Find flight deals from Singapore to Seattle

Cheapest flights from Singapore to Seattle
Explore the most affordable flight options available from Singapore to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2025.

Wed 27-808:45SIN - SEA
1 stop19h 48mUnited Airlines
Sat 30-817:35SEA - SIN
1 stop33h 50mUnited Airlines
Deal found 13-8S$ 781
Sat 20-900:20SIN - SEA
1 stop33h 55mPhilippine Airlines
Fri 24-1023:35SEA - SIN
1 stop28h 35mPhilippine Airlines
Deal found 14-8S$ 786
Tue 9-920:40SIN - SEA
1 stop30h 27mUnited Airlines
Wed 10-915:19SEA - SIN
1 stop23h 56mUnited Airlines
Deal found 15-8S$ 827
Fri 12-908:45SIN - SEA
1 stop19h 43mUnited Airlines
Wed 1-1007:00SEA - SIN
1 stop20h 25mUnited Airlines
Deal found 13-8S$ 832
Fri 5-908:45SIN - SEA
1 stop19h 43mUnited Airlines
Fri 12-917:35SEA - SIN
1 stop21h 40mUnited Airlines
Deal found 15-8S$ 833
Tue 19-808:45SIN - SEA
1 stop29h 14mUnited Airlines
Sun 31-813:05SEA - SIN
1 stop26h 10mUnited Airlines
Deal found 14-8S$ 835
Fri 15-808:45SIN - SEA
1 stop31h 14mUnited Airlines
Thu 28-817:35SEA - SIN
1 stop33h 50mUnited Airlines
Deal found 14-8S$ 837
Sun 28-920:40SIN - SEA
1 stop19h 19mUnited Airlines
Sun 5-1019:37SEA - SIN
1 stop19h 38mUnited Airlines
Deal found 14-8S$ 844
Thu 30-1014:45SIN - SEA
1 stop16h 20mSTARLUX Airlines
Sat 8-1123:45SEA - SIN
1 stop21h 40mSTARLUX Airlines
Deal found 14-8S$ 885
Sun 21-914:00SIN - SEA
1 stop17h 10mSTARLUX Airlines
Thu 23-1001:15SEA - SIN
1 stop20h 25mSTARLUX Airlines
Deal found 14-8S$ 886
Mon 15-914:00SIN - SEA
1 stop17h 10mSTARLUX Airlines
Sat 27-901:15SEA - SIN
1 stop20h 25mSTARLUX Airlines
Deal found 14-8S$ 901
Sun 28-914:00SIN - SEA
1 stop17h 10mSTARLUX Airlines
Sat 4-1001:15SEA - SIN
1 stop20h 25mSTARLUX Airlines
Deal found 14-8S$ 923

Cheapflights Fare Finder

 
Customise your flight search to find flights from Singapore to Seattle 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 200,618 searches. Data last updated 15 August 2025.
Use the filters below to find and compare flights from Singapore to Seattle that are best for you.

Fly from

Singapore

Fly to

Seattle

Route

Depart

Return

Price

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Wed 27-8

08:45-13:33

1 stop19h 48m

Seattle/Tacoma Intl

Sat 30-8

17:35-18:25

1 stop33h 50m

S$ 781

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sat 20-9

00:20-19:15

1 stop33h 55m

Seattle/Tacoma Intl

Fri 24-10

23:35-19:10

1 stop28h 35m

S$ 786

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Tue 9-9

20:40-12:07

1 stop30h 27m

Seattle/Tacoma Intl

Wed 10-9

15:19-06:15

1 stop23h 56m

S$ 827

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 12-9

08:45-15:14

1 stop21h 29m

Seattle/Tacoma Intl

Tue 30-9

15:28-06:15

1 stop23h 47m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 5-9

08:45-13:28

1 stop19h 43m

Seattle/Tacoma Intl

Fri 19-9

07:00-18:25

1 stop20h 25m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Wed 10-9

08:45-15:14

1 stop21h 29m

Seattle/Tacoma Intl

Wed 17-9

15:19-18:25

1 stop36h 06m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Wed 15-10

08:45-16:24

1 stop22h 39m

Seattle/Tacoma Intl

Mon 10-11

07:00-08:00

1 stop33h 00m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sat 13-9

08:45-16:19

1 stop22h 34m

Seattle/Tacoma Intl

Mon 29-9

07:00-18:25

1 stop20h 25m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sat 6-9

08:45-13:28

1 stop19h 43m

Seattle/Tacoma Intl

Sat 20-9

07:00-18:25

1 stop20h 25m

S$ 832

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 11-9

20:40-18:49

1 stop37h 09m

Seattle/Tacoma Intl

Tue 23-9

19:34-18:25

1 stop31h 51m

S$ 832

Flights are sorted by cheapest return flights first.

Deals found on 14-8

Showing 1-10 of 20 results
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Best time to book a flight from Singapore to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Singapore with our price prediction graph.
Estimated return 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 Singapore to Seattle

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

Use this chart to determine the optimal time to book a return flight from Singapore to Seattle. Price data was last updated on 8 August 2025.

The price you pay for your flight from Singapore to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Find hourly flight availability from Singapore to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 August 2025.

One of the essential ways to save on airfare from Singapore to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 30% on airfare.

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

Use this chart to determine the cheapest time to fly return from Singapore to Seattle. Price data was last updated on 16 December 2024.

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

How much does it cost for a return flight from Singapore to Seattle?

What’s the top stopover airport for flights from Singapore to Seattle?

Share of one-stop return flights from Singapore to Seattle chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Taipei City (TPE) – chosen by Cheapflights users on 55% of one-stop itineraries from Singapore to Seattle on Cheapflights.

What’s the cheapest stopover airport for flights from Singapore to Seattle?

Average return fare for one-stop flights from Singapore to Seattle, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Taipei City (TPE) is the most affordable one-stop option, with an average return flight price of S$ 1,270.

What’s the fastest stopover option from Singapore to Seattle?

Shortest average travel time for one-stop one-way flights from Singapore to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Tokyo (NRT) have the shortest average one-way travel time for one-stop routes: 17h 26m.

Which airport typically offers the quickest stopover for flights from Singapore to Seattle?

Average stopover duration for one-stop one-way flights from Singapore to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Tokyo (NRT) offer the fastest connection on this route, with an average stopover time of 2h 00m.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 15 August 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air, andChina Airlines from Singapore to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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
9.0
Wonderful
STARLUX Airlines
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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
9.0
Wonderful

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

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 Singapore to Seattle. 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 Singapore to Seattle flight route?

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

    Flying on STARLUX Airlines is currently your cheapest option to Seattle, with prices starting at S$ 952. Additional round-trip tickets that might be worth considering are offered by China Airlines and EVA Air, with the lowest prices starting at S$ 980 and S$ 1,005, respectively. You may be able to fly from Singapore to Seattle for 19% less than the average price by searching for these airlines.

  • What are the cheapest flights from Singapore to Seattle?

    On average you can expect to pay S$ 1,595 for a flight from Singapore to Seattle. The cheapest flight overall is S$ 1,358 while the most popular route, (Singapore Changi - Seattle/Tacoma Intl) is currently priced at S$ 833.

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

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

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

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

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

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

See more FAQs

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Fly from Singapore to Seattle on these airlines

Choose from the following airlines for your flight from Singapore to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 15 August 2025.

Top 6 airlines flying from Singapore to Seattle

Discover the top 6 airlines that operate flights from Singapore to Seattle. 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 200,618 searches. Data last updated 15 August 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapestS$ 952AverageS$ 1,103FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapestS$ 980AverageS$ 1,056FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapestS$ 1,005AverageS$ 1,154FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
United AirlinesCheapestS$ 1,028AverageS$ 1,092FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Korean AirCheapestS$ 1,056AverageS$ 1,251FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Singapore AirlinesCheapestS$ 1,140AverageS$ 1,569FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Singapore to Seattle?

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Can Cheapflights find flights from Singapore to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Singapore to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Singapore to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Singapore today and book when prices fit your budget.

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