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Cheap flights from Bangkok to Seattle from ฿16,239

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 23/12. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
6 Sep — 13 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 7 August 2026.

Fri 2/1000:25 -
1 stop22h 35m
Tue 3/1110:20 -
1 stop22h 05m
Deal found 3/8฿25,168
Thu 1/1001:35 -
1 stop27h 40m
Tue 3/1100:10 -
1 stop20h 05m
Deal found 3/8฿25,400
Tue 20/1011:45 -
1 stop17h 30m
Tue 27/1000:10 -
1 stop21h 05m
Deal found 5/8฿25,433
Sun 13/901:35 -
1 stop27h 40m
Tue 15/900:10 -
1 stop20h 30m
Deal found 6/8฿25,730
Mon 31/813:20 -
1 stop20h 25m
Sat 12/901:55 -
1 stop33h 30m
Deal found 4/8฿25,830
Fri 20/1112:20 -
1 stop16h 35m
Sun 29/1100:10 -
1 stop30h 50m
Deal found 3/8฿25,863
Sat 19/902:40 -
1 stop30h 35m
Thu 24/901:15 -
1 stop25h 05m
Deal found 6/8฿25,896
Thu 22/1013:20 -
1 stop19h 55m
Thu 5/1100:10 -
1 stop34h 25m
Deal found 5/8฿25,929
Thu 3/913:10 -
1 stop17h 00m
Tue 15/901:15 -
1 stop20h 45m
Deal found 3/8฿26,028
Tue 6/1002:35 -
1 stop22h 05m
Wed 14/1012:50 -
1 stop18h 55m
Deal found 6/8฿26,061
Thu 20/807:30 -
2 stops26h 20m
Wed 2/901:30 -
2 stops31h 35m
Deal found 3/8฿31,981
Thu 3/918:25 -
2 stops34h 50m
Tue 15/900:10 -
2 stops32h 30m
Deal found 3/8฿32,477

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 7 August 2026.

Round-trip from

฿25,168

One-way from

฿16,239

Popular in

August

Cheapest in

March

Average price

฿33,238
ไห่หนานแอร์ไลน์
  • ไห่หนานแอร์ไลน์
  • 2/10-3/11
  • 2 total stops
  • 44h 40m total
  • Bangkok to Seattle
Search Deals
ไห่หนานแอร์ไลน์
  • ไห่หนานแอร์ไลน์
  • 23/12
  • 2 total stops
  • 27h 55m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿87,854 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,010 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 7 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 Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

21:40-10:40

1 stop27h 00m

Seattle/Tacoma Intl

Thu 15/10

12:50-01:05

1 stop22h 15m

฿27,020

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

฿27,020
Fastest return journey

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

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

฿27,616

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Thu 10/9

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Wed 30/9

13:19-09:35

3 stops30h 16m

฿28,112

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 20/10

09:35-21:01

2 stops25h 26m

Seattle/Tacoma Intl

Wed 28/10

16:39-11:30

2 stops28h 51m

฿28,310

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Wed 23/9

15:45-19:29

2 stops41h 44m

Seattle/Tacoma Intl

Sat 26/9

16:30-09:35

2 stops27h 05m

฿28,442

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sat 19/12

16:55-14:29

2 stops36h 34m

Seattle/Tacoma Intl

Sun 23/5

06:57-04:35

2 stops31h 38m

฿29,335

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

23:30-14:22

2 stops28h 52m

Seattle/Tacoma Intl

Thu 15/10

19:20-15:25

2 stops30h 05m

฿30,228

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 1/12

21:30-09:00

1 stop26h 30m

Seattle/Tacoma Intl

Mon 28/12

19:59-23:20

2 stops36h 21m

฿30,460

BangkokSeattle

DMK Bangkok Don Mueang Intl - SEA Seattle/Tacoma Intl

DMKSEA

Bangkok Don Mueang Intl

Sun 20/9

13:45-12:45

2 stops37h 00m

Seattle/Tacoma Intl

Fri 25/9

16:25-11:05

2 stops28h 40m

฿40,415

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 38 resultsSorted by cheapest first
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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, March is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿24,540). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,238). 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 ฿28,806 and ฿34,395 in October.
The cheapest return price found within the last 5 days was ฿25,168 on ไห่หนานแอร์ไลน์ (2 Oct–3 Nov).

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 7 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

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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
8.8
Very Good
STARLUX Airlines
8.8
Very Good
Check prices

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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
1,511 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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
553 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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
8,502 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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.
Philippine Airlines
7.3
Good
1,013 reviews
STARLUX Airlines
8.8
Very Good
Check prices

Food

8.6

Overall

8.8

Comfort

8.8

Boarding

8.9

Entertainment

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

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?

    Korean Air, China Airlines, and United Airlines can get you from Bangkok to Seattle in just under 18h 50m. Your travel time can differ by up to 8h 10m. 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 (฿21,339), China Airlines (฿22,080), and Asiana Airlines (฿22,173) 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 ฿14,254 on STARLUX Airlines. Other airlines that offer cheap prices include China Airlines from ฿15,657 and Qatar Airways from ฿16,996 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 ฿24,540). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,238). 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 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 7 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,339Average฿22,692FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿22,080Average฿26,668FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿22,173Average฿24,103FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿23,774Average฿28,328FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,302Average฿30,250FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿30,242Average฿30,441FlexibilityNo 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.

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