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Cheap flights from Bangkok to Seattle from ฿13,454

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
2 Feb — 9 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 3 January 2026.

Sun 15/202:05BKK - SEA
1 stop26h 50mMultiple Airlines
Sun 22/200:10SEA - BKK
1 stop32h 10mMultiple Airlines
Deal found 2/1฿19,993
Mon 2/301:05BKK - SEA
1 stop21h 55mไห่หนานแอร์ไลน์
Tue 24/311:00SEA - BKK
1 stop22h 25mไห่หนานแอร์ไลน์
Deal found 1/1฿20,087
Mon 30/300:40BKK - SEA
1 stop22h 20mไห่หนานแอร์ไลน์
Thu 10/911:05SEA - BKK
1 stop33h 30mไห่หนานแอร์ไลน์
Deal found 2/1฿21,030
Mon 1/613:50BKK - SEA
1 stop33h 10mไห่หนานแอร์ไลน์
Tue 1/911:00SEA - BKK
1 stop22h 00mไห่หนานแอร์ไลน์
Deal found 1/1฿21,219
Tue 20/113:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Tue 27/121:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 2/1฿21,439
Tue 20/113:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Tue 10/221:30SEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 1/1฿21,470
Tue 10/213:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Wed 18/322:30SEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 1/1฿21,596
Tue 27/113:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Tue 14/723:10SEA - BKK
1 stop23h 00mPhilippine Airlines
Deal found 1/1฿21,659
Thu 21/513:25BKK - SEA
1 stop20h 40mPhilippine Airlines
Sun 24/523:10SEA - BKK
1 stop33h 30mPhilippine Airlines
Deal found 1/1฿21,690
Tue 10/213:20BKK - SEA
1 stop20h 20mPhilippine Airlines
Tue 10/322:30SEA - BKK
1 stop29h 20mPhilippine Airlines
Deal found 1/1฿21,879
Mon 9/223:50BKK - SEA
1 stop33h 50mPhilippine Airlines
Thu 19/322:30SEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 1/1฿22,413
Tue 24/209:00DMK - SEA
2 stops24h 52mMultiple Airlines
Thu 2/423:10SEA - DMK
1 stop22h 15mMultiple Airlines
Deal found 3/1฿29,518

Find 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 3 January 2026.

Round-trip from

฿19,899

One-way from

฿13,454

Popular in

July

Cheapest in

December

Average price

฿29,706
8/2-21/2
  • 8/2-21/2
  • 2 total stops
  • 59h 00m total
  • Bangkok to Seattle
Search Deals
ไห่หนานแอร์ไลน์
  • ไห่หนานแอร์ไลน์
  • 6/4
  • 1 total stop
  • 22h 20m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿105,386 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿19,947 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 3 January 2026.
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

Mon 9/2

23:50-18:40

1 stop33h 50m

Seattle/Tacoma Intl

Thu 19/3

22:30-23:00

1 stop34h 30m

฿22,413

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 10/2

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Thu 19/3

22:30-12:00

1 stop23h 30m

฿22,413

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 10/2

13:20-18:40

1 stop20h 20m

Seattle/Tacoma Intl

Fri 20/3

22:30-12:00

1 stop23h 30m

฿22,476

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 19/3

13:20-19:40

1 stop20h 20m

Seattle/Tacoma Intl

Sun 22/3

22:30-12:00

1 stop23h 30m

฿22,791

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 20/3

13:20-19:40

1 stop20h 20m

Seattle/Tacoma Intl

Thu 9/4

23:10-12:10

1 stop23h 00m

฿22,791

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 1/7

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Wed 12/8

05:15-23:55

2 stops28h 40m

฿24,708

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 1/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Tue 1/9

06:30-23:55

2 stops27h 25m

฿24,928

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 1/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Wed 16/9

08:35-23:55

2 stops25h 20m

฿24,928

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Tue 24/2

09:00-18:52

2 stops24h 52m

Seattle/Tacoma Intl

Thu 2/4

23:10-11:25

1 stop22h 15m

฿29,518

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Sun 25/1

02:35-19:16

2 stops31h 41m

Seattle/Tacoma Intl

Mon 9/2

05:45-02:45

2 stops30h 00m

฿32,567

Flights are sorted by cheapest return flights first.

Deals found on 2/1

Showing 1-10 of 36 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

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

Use this chart to determine the optimal time to book a return flight from Bangkok to Seattle. Price data was last updated on 2 January 2026.

The best time to book flights from Bangkok to Seattle is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 ฿19,616). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,551). 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.

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 3 January 2026.
Read through reviews of airlines operating flights from Bangkok to Seattle, such as STARLUX Airlines, EVA Air, andChina Airlines. 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

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
EVA Air
8.4
Very Good
1,306 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.3
Very Good
798 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
เดลต้า
7.9
Good
8,023 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Philippine Airlines
7.3
Good
946 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.8

Boarding

8.9

Food

8.7

Entertainment

8.8

Overall

8.9

Crew

9.1

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

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 33h 50m. 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 (฿20,184), STARLUX Airlines (฿23,204), and China Airlines (฿23,496) 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.

  • What are the cheapest airlines to fly from Bangkok to Seattle one-way?

    One-way options have recently been found by users for as low as ฿12,510 on Philippine Airlines. Other airlines that offer cheap prices include China Airlines from ฿14,697 and STARLUX Airlines from ฿15,334 one-way.

  • 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 ฿19,616). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,551). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 3 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿20,184Average฿21,394FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
STARLUX AirlinesCheapest฿23,204Average฿26,805FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapest฿23,496Average฿25,504FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapest฿25,000Average฿27,210FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Korean AirCheapest฿26,062Average฿30,833FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
เดลต้าCheapest฿26,287Average฿28,934FlexibilityNo cancel feeOn-timeN/A
Search เดลต้า flights
Asiana AirlinesCheapest฿27,698Average฿30,639FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines 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.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Seattle?

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.

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

Yes, we can. To see specific flights from Bangkok to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from Bangkok to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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