Find flights
When to book
Airlines
FAQs

Cheap flights from Bangkok to Seattle from ฿16,567

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
1 Sep — 8 Sep1
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 2 August 2026.

Sat 12/902:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Sun 20/912:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 29/7฿25,351
Wed 9/902:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Fri 18/912:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 28/7฿25,418
Fri 4/909:50
BKK
-
SEA
1 stop38h 50m
Korean Air
Fri 18/912:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 31/7฿25,452
Sat 12/901:35
BKK
-
SEA
1 stop27h 40m
Asiana Airlines
Thu 17/900:10
SEA
-
BKK
1 stop33h 25m
Asiana Airlines
Deal found 1/8฿25,652
Fri 16/1011:45
BKK
-
SEA
1 stop17h 30m
Asiana Airlines
Sun 18/1000:10
SEA
-
BKK
1 stop20h 30m
Asiana Airlines
Deal found 28/7฿25,886
Tue 20/1011:45
BKK
-
SEA
1 stop17h 30m
Asiana Airlines
Tue 27/1000:10
SEA
-
BKK
1 stop21h 05m
Asiana Airlines
Deal found 30/7฿25,919
Sat 12/923:30
BKK
-
SEA
1 stop25h 10m
Korean Air
Sun 20/912:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 31/7฿25,953
Fri 28/809:50
BKK
-
SEA
1 stop17h 47m
เดลต้า
Fri 4/913:00
SEA
-
BKK
1 stop22h 05m
เดลต้า
Deal found 29/7฿25,986
Fri 16/1019:10
BKK
-
SEA
1 stop28h 55m
Cathay Pacific
Tue 20/1011:45
SEA
-
BKK
1 stop33h 20m
Cathay Pacific
Deal found 28/7฿26,019
Tue 6/1021:40
BKK
-
SEA
1 stop27h 00m
Korean Air
Thu 15/1012:50
SEA
-
BKK
1 stop22h 15m
Korean Air
Deal found 29/7฿26,086
Fri 4/918:30
DMK
-
SEA
2 stops28h 30m
Multiple Airlines
Thu 17/901:15
SEA
-
DMK
1 stop28h 15m
Multiple Airlines
Deal found 31/7฿34,303
Mon 21/909:20
DMK
-
SEA
2 stops23h 55m
Multiple Airlines
Sun 1/1100:10
SEA
-
DMK
1 stop28h 05m
Multiple Airlines
Deal found 31/7฿34,537

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 2 August 2026.

Round-trip from

฿25,351

One-way from

฿16,567

Popular in

August

Cheapest in

March

Average price

฿33,568
Korean Air
  • Korean Air
  • 12/9-20/9
  • 2 total stops
  • 41h 00m total
  • Bangkok to Seattle
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 18/9
  • 1 total stop
  • 23h 45m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿91,830 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,486 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 2 August 2026.
Use the filters below to find and compare flights from Bangkok to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 11/12

09:40-11:56

1 stop17h 16m

Seattle/Tacoma Intl

Thu 31/12

13:00-13:25

1 stop33h 25m

฿25,986

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 30/11

02:35-18:10

1 stop30h 35m

Seattle/Tacoma Intl

Sun 27/12

00:10-16:45

1 stop25h 35m

฿26,788

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/12

12:20-13:55

1 stop16h 35m

Seattle/Tacoma Intl

Sun 27/12

00:10-22:00

1 stop30h 50m

฿27,389

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 10/9

07:00-11:26

2 stops42h 26m

Seattle/Tacoma Intl

Fri 11/9

16:30-04:35

1 stop22h 05m

฿27,689

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 15/9

09:35-18:29

2 stops46h 54m

Seattle/Tacoma Intl

Sun 1/11

15:40-05:10

1 stop22h 30m

฿27,790
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Sat 17/10

19:25-09:35

2 stops24h 10m

฿27,823

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Tue 25/8

07:25-19:10

1 stop25h 45m

Seattle/Tacoma Intl

Mon 14/9

01:55-16:40

1 stop24h 45m

฿38,979

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Tue 15/9

23:50-13:25

1 stop27h 35m

Seattle/Tacoma Intl

Tue 20/10

17:15-20:45

1 stop37h 30m

฿52,273

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Sun 27/9

12:10-13:25

1 stop39h 15m

Seattle/Tacoma Intl

Wed 7/10

17:15-11:10

1 stop27h 55m

฿52,273

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 21/9

12:10-13:25

1 stop39h 15m

Seattle/Tacoma Intl

Mon 2/11

16:05-10:00

1 stop26h 55m

฿52,440

Flights are sorted by cheapest return flights first.

Deals found on 29/7

Showing 1-10 of 35 resultsSorted by cheapest first
1
2
3
4

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, March is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿24,784). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,568). 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.

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

Airfare is below average for this route at the moment.
Bangkok to Seattle flights typically cost between ฿29,092 and ฿34,737 in September.
The cheapest return price found within the last 5 days was ฿25,351 on Korean Air (12 Sep–20 Sep).

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

The best time to book flights from Bangkok to Seattle is 83 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.

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 2 August 2026.
Read through reviews of airlines operating flights from Bangkok to Seattle, such as STARLUX Airlines,EVA Air, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.
STARLUX Airlines
8.8
Very Good
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.
EVA Air
8.5
Very Good
1,511 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.
Asiana Airlines
8.1
Very Good
555 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.
เดลต้า
7.8
Good
8,497 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.
Philippine Airlines
7.3
Good
1,012 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Boarding

8.9

Overall

8.8

Crew

9.1

Comfort

8.8

Entertainment

8.7

Food

8.6

Reviews

1 / 15
8.0
Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

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 6 different airlines.

  • How long is the flight from Bangkok to Seattle?

    เดลต้า, China Airlines, and Emirates can get you from Bangkok to Seattle in just under 17h 16m. Your travel time can differ by up to 13h 19m. Bangkok and Seattle are separated by a distance of 11978 km. Both multi-stop and direct flights can be found to your destination and back.

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

    According to our current data, Philippine Airlines (฿21,551), China Airlines (฿22,299), and Asiana Airlines (฿22,393) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 25% 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 ฿14,396 on STARLUX Airlines. Other airlines that offer cheap prices include China Airlines from ฿15,812 and Qatar Airways from ฿17,165 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, March is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿24,784). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,568). 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 6 airlines flying from Bangkok to Seattle

Discover the top 6 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 2 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,551Average฿22,918FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿22,299Average฿26,933FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿22,393Average฿24,342FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿24,010Average฿28,610FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,563Average฿30,551FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿30,543Average฿30,743FlexibilityNo 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.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.