Find flights
When to book
Airlines
FAQs

Cheap flights from Bangkok to Seattle from ฿15,792

BKK — SEA
26 Sep — 3 Oct1
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

Sun 20/1223:15 -
1 stop24h 45m
Mon 4/111:00 -
1 stop19h 30m
Deal found 23/8฿25,096
Tue 20/1011:45 -
1 stop17h 30m
Tue 27/1000:10 -
1 stop21h 05m
Deal found 24/8฿25,391
Wed 21/1001:35 -
1 stop27h 40m
Tue 27/1000:10 -
1 stop21h 05m
Deal found 26/8฿25,489
Sun 18/1021:40 -
1 stop27h 00m
Thu 22/1012:50 -
1 stop18h 55m
Deal found 23/8฿25,588
Sat 19/902:35 -
1 stop22h 05m
Wed 23/912:50 -
1 stop18h 55m
Deal found 23/8฿25,620
Sun 4/1011:45 -
1 stop17h 30m
Sat 20/300:10 -
1 stop21h 05m
Deal found 23/8฿25,719
Fri 9/1002:35 -
1 stop22h 05m
Sat 17/1012:50 -
1 stop34h 45m
Deal found 26/8฿25,751
Sat 26/902:35 -
1 stop22h 05m
Wed 30/912:50 -
1 stop20h 45m
Deal found 23/8฿25,817
Sun 11/1002:35 -
1 stop22h 05m
Wed 21/1012:50 -
1 stop18h 55m
Deal found 26/8฿25,882
Mon 14/1212:20 -
1 stop16h 35m
Sun 27/1200:10 -
1 stop20h 05m
Deal found 25/8฿26,112
Sat 19/902:40 -
1 stop30h 35m
Sat 10/701:55 -
1 stop20h 15m
Deal found 26/8฿26,177
Sat 26/903:00 -
1 stop27h 10m
Wed 30/923:10 -
2 stops33h 55m
Deal found 23/8฿34,171

Find flight deals from Bangkok to Seattle

Round-trip from

฿25,096

One-way from

฿15,792

Popular in

August

Cheapest in

March

Average price

฿32,926
Korean Air
  • Korean Air
  • 20/12-4/1
  • 2 total stops
  • 44h 15m total
  • Bangkok to Seattle
Search Deals
Korean Air
  • Korean Air
  • 19/9
  • 1 total stop
  • 27h 00m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (฿76,998 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿12,837 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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 Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 14/9

02:40-19:45

1 stop31h 05m

Seattle/Tacoma Intl

Tue 15/9

01:15-12:10

1 stop20h 55m

฿26,308

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 1/12

14:05-18:10

1 stop19h 05m

Seattle/Tacoma Intl

Sun 27/12

00:10-01:35

1 stop34h 25m

฿26,374

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 12/10

23:30-13:14

1 stop27h 44m

Seattle/Tacoma Intl

Mon 9/11

12:35-23:20

1 stop19h 45m

฿26,701

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sun 20/9

09:35-23:26

2 stops51h 51m

Seattle/Tacoma Intl

Sun 11/7

16:30-04:35

1 stop22h 05m

฿27,521

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Wed 13/1

09:10-11:33

2 stops41h 23m

Seattle/Tacoma Intl

Mon 8/2

15:45-05:10

1 stop22h 25m

฿27,553

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:35-21:01

2 stops25h 26m

Seattle/Tacoma Intl

Sat 17/10

16:30-04:35

1 stop22h 05m

฿27,553

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Fri 30/10

16:55-12:20

3 stops33h 25m

Seattle/Tacoma Intl

Sat 31/10

16:40-05:10

1 stop22h 30m

฿27,684

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sun 20/9

09:35-11:24

2 stops39h 49m

Seattle/Tacoma Intl

Wed 23/9

15:30-09:35

3 stops28h 05m

฿28,438
Fastest return journey

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 15/9

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Wed 16/9

19:35-09:35

2 stops24h 00m

฿29,159

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Thu 22/10

15:45-01:15

2 stops23h 30m

Seattle/Tacoma Intl

Fri 6/11

15:40-05:10

1 stop22h 30m

฿29,683

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 41 resultsSorted by cheapest first
1
2
3
...
5

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

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 ฿24,310). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿32,926). 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 ฿27,226 and ฿30,142 in December.
The cheapest return price found within the last 5 days was ฿25,096 on Korean Air (20 Dec–4 Jan).

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

The best time to book flights from Bangkok to Seattle is 82 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

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
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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
8.7
Very Good
STARLUX Airlines
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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
1,522 reviews
STARLUX Airlines
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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.
China Airlines
8.3
Very Good
843 reviews
STARLUX Airlines
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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
558 reviews
STARLUX Airlines
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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
8,532 reviews
STARLUX Airlines
8.7
Very Good
Check prices

Comfort

8.8

Boarding

8.8

Entertainment

8.7

Food

8.5

Overall

8.7

Crew

9.1

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

  • 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?

    China Airlines, เดลต้า, and United Airlines can get you from Bangkok to Seattle in just under 27h 44m. Your travel time can differ by up to 24h 07m. 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 (฿21,036), China Airlines (฿21,873), and Asiana Airlines (฿21,965) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 26% 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 ฿14,120 on STARLUX Airlines. Other airlines that offer cheap prices include China Airlines from ฿15,510 and Qatar Airways from ฿16,837 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 ฿24,310). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿32,926). 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

Alternative routes for Bangkok to Seattle

Chiang Mai to Seattle flights
Chiang Mai to Portland flights

Top 6 airlines flying from Bangkok to Seattle

AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,036Average฿22,516FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿21,873Average฿26,418FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿21,965Average฿23,877FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿23,551Average฿28,371FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,055Average฿29,985FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿26,849Average฿30,156FlexibilityNo cancel feeOn-timeN/A
Search เดลต้า flights

Fly with Cheapflights

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.