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Cheap flights from Bangkok to Seattle from ฿15,845

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
26 May — 2 Jun1
1 adult

Cheapflights Tip: The best prices from Bangkok to Seattle/Tacoma Intl are usually found in November or March, booked 51 days in advance, depart on a Monday or Thursday and return on a Tuesday

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 May 2025.

Round-trip from

฿26,871

One-way from

฿15,845

Popular in

January

Cheapest in

November

Average price

฿29,974
5/6-20/6
  • 5/6-20/6
  • 2 total stops
  • 44h 45m total
  • Bangkok to Seattle
Search Deals
24/8
  • 24/8
  • 3 total stops
  • 31h 22m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (฿33,123 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿21,345 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2025
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Find flight deals from Bangkok to Seattle

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 May 2025.

Thu 5/602:35BKK - SEA
1 stop23h 55mMultiple Airlines
Fri 20/614:15SEA - BKK
1 stop20h 50mMultiple Airlines
Deal found 20/5฿26,871
Tue 16/923:20BKK - SEA
1 stop33h 55mPhilippine Airlines
Wed 8/1015:57SEA - BKK
2 stops30h 18mPhilippine Airlines
Deal found 20/5฿27,069
Mon 15/902:40BKK - SEA
1 stop30h 40mChina Airlines
Tue 7/1001:10SEA - BKK
1 stop21h 00mChina Airlines
Deal found 20/5฿27,465
Sun 25/502:35BKK - SEA
1 stop25h 00mเดลต้า
Fri 27/612:55SEA - BKK
1 stop22h 10mเดลต้า
Deal found 19/5฿27,531
Sun 25/502:35BKK - SEA
1 stop22h 05mKorean Air
Wed 25/613:20SEA - BKK
1 stop18h 25mKorean Air
Deal found 19/5฿27,630
Sat 4/1017:50BKK - SEA
1 stop36h 20mSTARLUX Airlines
Sun 12/1001:15SEA - BKK
1 stop20h 45mSTARLUX Airlines
Deal found 20/5฿28,026
Sat 4/1015:10BKK - SEA
1 stop17h 40mEVA Air
Sat 11/1000:30SEA - BKK
1 stop20h 30mEVA Air
Deal found 20/5฿28,158
Wed 9/707:00BKK - SEA
2 stops29h 16mUnited Airlines
Tue 22/716:30SEA - BKK
1 stop22h 05mUnited Airlines
Deal found 19/5฿29,281
Tue 1/721:35BKK - SEA
1 stop30h 50mANA
Tue 22/707:00SEA - BKK
2 stops26h 55mANA
Deal found 20/5฿29,314
Sat 4/1020:10BKK - SEA
2 stops32h 06mแอร์แคนาดา
Sun 12/1014:55SEA - BKK
2 stops30h 05mแอร์แคนาดา
Deal found 20/5฿32,219
Fri 30/501:20BKK - SEA
1 stop25h 10mAsiana Airlines
Sat 28/614:15SEA - BKK
1 stop18h 55mAsiana Airlines
Deal found 19/5฿33,374
Thu 29/508:05BKK - SEA
2 stops22h 43mJapan Airlines
Thu 26/608:10SEA - BKK
2 stops24h 50mJapan Airlines
Deal found 19/5฿33,407

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 May 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

Thu 5/6

02:35-12:30

1 stop23h 55m

Seattle/Tacoma Intl

Fri 20/6

14:15-01:05

1 stop20h 50m

฿26,871

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 16/9

23:20-19:15

1 stop33h 55m

Seattle/Tacoma Intl

Wed 8/10

15:57-12:15

2 stops30h 18m

฿27,069

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 15/9

02:40-19:20

1 stop30h 40m

Seattle/Tacoma Intl

Tue 7/10

01:10-12:10

1 stop21h 00m

฿27,465

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 4/10

17:50-16:10

1 stop36h 20m

Seattle/Tacoma Intl

Sun 12/10

01:15-12:00

1 stop20h 45m

฿28,026

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 4/10

15:10-18:50

1 stop17h 40m

Seattle/Tacoma Intl

Sat 11/10

00:30-11:00

1 stop20h 30m

฿28,158

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 30/6

02:35-10:50

1 stop22h 15m

Seattle/Tacoma Intl

Tue 22/7

13:20-23:25

1 stop20h 05m

฿29,248

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 9/7

07:00-22:16

2 stops29h 16m

Seattle/Tacoma Intl

Tue 22/7

16:30-04:35

1 stop22h 05m

฿29,281

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/7

21:35-14:25

1 stop30h 50m

Seattle/Tacoma Intl

Tue 22/7

07:00-23:55

2 stops26h 55m

฿29,314

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/7

09:50-14:00

1 stop18h 10m

Seattle/Tacoma Intl

Tue 22/7

12:45-23:25

1 stop20h 40m

฿30,997

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 4/10

20:10-14:16

2 stops32h 06m

Seattle/Tacoma Intl

Sun 12/10

14:55-11:00

2 stops30h 05m

฿32,219

Flights are sorted by cheapest return flights first.

Deals found on 20/5

Showing 1-10 of 29 results
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2
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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 16 May 2025.

The best time to book flights from Bangkok to Seattle is 51 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 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 May 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 29% 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. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 May 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Bangkok to Seattle by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very Good
1,193 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very Good
1,076 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very Good
1,477 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very Good
733 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Crew

9.3

Comfort

9.0

Entertainment

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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 9 different airlines.

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

    According to our current data, Philippine Airlines (฿27,069), China Airlines (฿27,465), and STARLUX Airlines (฿28,026) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 12% 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 ฿16,869 on China Airlines. Other airlines that offer cheap prices include Korean Air from ฿16,902 and Philippine Airlines from ฿17,430 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.

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 9 airlines flying from Bangkok to Seattle

Discover the top 9 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 May 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿19,007Average฿22,528FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿22,697Average฿34,121FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿25,665Average฿29,137FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
Korean AirCheapest฿26,571Average฿32,379FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
EVA AirCheapest฿26,916Average฿31,659FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
China AirlinesCheapest฿28,149Average฿31,538FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
United AirlinesCheapest฿28,154Average฿31,281FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
ANACheapest฿28,407Average฿33,566FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest฿31,322Average฿38,327FlexibilityNo cancel feeOn-time79%
Search Japan 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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