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Cheap flights from Bangkok to Seattle from ฿13,582

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
20 Nov — 27 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Bangkok to Seattle/Tacoma Intl are usually found in February or October, booked 1 days in advance, depart on a Monday or Thursday and return on a Tuesday

Find flight deals from Bangkok to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Bangkok to Seattle
Explore the most affordable flight options available from Bangkok to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 October 2025.

Sun 16/1102:05BKK - SEA
1 stop26h 50mMultiple Airlines
Sun 23/1100:10SEA - BKK
1 stop33h 45mMultiple Airlines
Deal found 20/10฿20,798
Wed 22/1013:30BKK - SEA
1 stop19h 45mPhilippine Airlines
Sun 23/1121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 19/10฿20,831
Thu 23/1023:20BKK - SEA
1 stop33h 55mPhilippine Airlines
Sun 9/1121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 18/10฿20,929
Sun 16/1113:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Sun 23/1121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 19/10฿21,092
Wed 19/1121:30BKK - SEA
1 stop31h 25mMultiple Airlines
Wed 13/500:10SEA - BKK
1 stop23h 05mMultiple Airlines
Deal found 19/10฿21,190
Wed 22/1013:30BKK - SEA
1 stop19h 45mPhilippine Airlines
Fri 7/1121:30SEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 18/10฿21,320
Sun 21/1213:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Thu 8/121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 18/10฿21,353
Thu 18/1223:50BKK - SEA
1 stop33h 50mPhilippine Airlines
Fri 9/121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 18/10฿21,647
Sat 25/1023:20BKK - SEA
1 stop34h 20mPhilippine Airlines
Fri 7/1121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 19/10฿22,202
Tue 21/1023:20BKK - SEA
1 stop33h 55mPhilippine Airlines
Sun 9/1121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 18/10฿22,235
Tue 21/1018:40BKK - SEA
1 stop38h 35mPhilippine Airlines
Fri 7/1121:30SEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 18/10฿22,365
Sat 20/1223:50BKK - SEA
1 stop33h 50mPhilippine Airlines
Fri 2/121:30SEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 17/10฿22,528

Cheap flight deals from Bangkok to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) 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 21 October 2025.

Round-trip from

฿20,406

One-way from

฿13,582

Popular in

July

Cheapest in

February

Average price

฿26,642
19/3-23/3
  • 19/3-23/3
  • 2 total stops
  • 64h 25m total
  • Bangkok to Seattle
Search Deals
26/11
  • 26/11
  • 2 total stops
  • 35h 21m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (฿99,354 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿19,199 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bangkok 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 17,341 searches. Data last updated 21 October 2025.
Use the filters below to find and compare flights from Bangkok to Seattle that are best for you.

Fly from

Bangkok

Fly to

Seattle

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 15/3

13:20-19:40

1 stop20h 20m

Seattle/Tacoma Intl

Sun 22/3

22:30-17:50

1 stop29h 20m

฿21,125

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 17/12

23:50-18:40

1 stop33h 50m

Seattle/Tacoma Intl

Fri 9/1

21:30-12:00

1 stop23h 30m

฿22,594

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 26/1

18:45-18:40

1 stop38h 55m

Seattle/Tacoma Intl

Sun 1/2

21:30-23:00

1 stop34h 30m

฿22,920

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 25/1

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Fri 30/1

21:30-17:50

1 stop29h 20m

฿22,920

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 25/1

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Tue 27/1

21:30-12:00

1 stop23h 30m

฿22,920

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 6/3

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Wed 25/3

22:30-12:00

1 stop23h 30m

฿22,953

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 29/1

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Wed 29/4

23:55-12:05

1 stop22h 10m

฿25,304

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 17/12

23:50-18:40

1 stop33h 50m

Seattle/Tacoma Intl

Wed 7/1

21:30-23:00

1 stop34h 30m

฿25,794

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 25/1

16:55-15:44

3 stops37h 49m

Seattle/Tacoma Intl

Tue 27/1

12:35-11:25

3 stops31h 50m

฿25,826

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 19/11

16:55-13:38

3 stops35h 43m

Seattle/Tacoma Intl

Thu 14/5

16:30-04:35

1 stop22h 05m

฿25,859

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 41 results
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Best time to book a flight from Bangkok to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Bangkok 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 Bangkok to Seattle

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

Currently, June is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿20,374). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿25,500). 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 BKK to SEA?

Find hourly flight availability from Bangkok 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 21 October 2025.

When flying from Bangkok to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 28% versus a flight in the afternoon.

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

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

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

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 21 October 2025.
Read through reviews of airlines operating flights from Bangkok to Seattle, such as STARLUX Airlines, EVA Air, andKorean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
EVA Air
8.4
Very Good
1,255 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
Korean Air
8.4
Very Good
1,153 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
China Airlines
8.3
Very Good
770 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
Asiana Airlines
8.2
Very Good
485 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.2

Entertainment

8.8

Overall

8.9

Boarding

8.9

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Related info for your journey

Find useful and relevant information for your journey from Bangkok to Seattle. 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 into for flights to Seattle from Bangkok?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seattle from Bangkok. Booking flights from Bangkok to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 0 daily inbound flights from Bangkok from 7 different airlines.

  • How long is the flight from Bangkok to Seattle?

    Philippine Airlines can get you from Bangkok to Seattle in just under 20h 20m. Your travel time can differ by up to . Bangkok and Seattle are separated by a distance of 11978 km.

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

    According to our current data, Philippine Airlines (฿21,066), Asiana Airlines (฿22,406), and STARLUX Airlines (฿24,100) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Bangkok 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.

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

    Currently, June is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿20,374). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿25,500). 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 Bangkok to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Seattle flights
Chiang Mai to Portland flights

Top 7 airlines flying from Bangkok to Seattle

Discover the top 7 airlines that operate flights from Bangkok 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 17,341 searches. Data last updated 21 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,066Average฿22,341FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿22,406Average฿23,569FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿24,100Average฿27,840FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapest฿24,404Average฿27,979FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapest฿26,622Average฿28,512FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Korean AirCheapest฿26,831Average฿31,832FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
เดลต้าCheapest฿27,303Average฿30,052FlexibilityNo cancel feeOn-timeN/A
Search เดลต้า flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Bangkok to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Bangkok to Seattle.

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