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Cheap flights from Bangkok to Seattle from ฿17,049

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
27 Jul — 3 Aug1
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 27 June 2026.

Tue 6/1009:50
BKK
-
SEA
1 stop17h 24m
เดลต้า
Thu 15/1013:00
SEA
-
BKK
1 stop20h 35m
เดลต้า
Deal found 25/6฿25,656
Mon 19/1002:35
BKK
-
SEA
1 stop24h 39m
เดลต้า
Wed 28/1013:40
SEA
-
BKK
1 stop19h 40m
เดลต้า
Deal found 26/6฿25,690
Sat 3/1001:35
BKK
-
SEA
1 stop27h 40m
Asiana Airlines
Sat 27/300:10
SEA
-
BKK
1 stop20h 30m
Asiana Airlines
Deal found 22/6฿25,923
Sat 3/1002:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Sun 28/312:50
SEA
-
BKK
1 stop20h 45m
Korean Air
Deal found 24/6฿26,224
Sat 12/1223:55
BKK
-
SEA
1 stop29h 00m
Asiana Airlines
Sat 19/1200:10
SEA
-
BKK
1 stop20h 05m
Asiana Airlines
Deal found 23/6฿26,257
Tue 6/1023:30
BKK
-
SEA
1 stop25h 10m
Korean Air
Wed 21/1012:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 22/6฿26,290
Wed 2/923:30
BKK
-
SEA
1 stop25h 10m
Korean Air
Wed 16/912:50
SEA
-
BKK
1 stop22h 15m
Korean Air
Deal found 23/6฿26,324
Wed 19/809:50
BKK
-
SEA
1 stop17h 47m
เดลต้า
Thu 27/813:05
SEA
-
BKK
1 stop20h 30m
เดลต้า
Deal found 24/6฿26,390
Sat 4/707:00
BKK
-
SEA
2 stops40h 22m
United Airlines
Sun 5/716:30
SEA
-
BKK
1 stop22h 05m
United Airlines
Deal found 25/6฿26,524
Mon 6/713:40
DMK
-
SEA
2 stops20h 05m
Multiple Airlines
Sat 18/701:55
SEA
-
DMK
2 stops31h 10m
Multiple Airlines
Deal found 26/6฿33,030
Mon 20/709:55
DMK
-
SEA
2 stops23h 50m
Multiple Airlines
Sun 26/701:55
SEA
-
DMK
2 stops30h 45m
Multiple Airlines
Deal found 22/6฿33,130
Sun 5/707:30
DMK
-
SEA
2 stops26h 20m
Multiple Airlines
Fri 17/702:10
SEA
-
DMK
2 stops30h 55m
Multiple Airlines
Deal found 26/6฿33,497

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 27 June 2026.

Round-trip from

฿25,656

One-way from

฿17,049

Popular in

August

Cheapest in

March

Average price

฿29,260
เดลต้า
  • เดลต้า
  • 6/10-15/10
  • 2 total stops
  • 37h 59m total
  • Bangkok to Seattle
Search Deals
China Airlines
  • China Airlines
  • 1/11
  • 1 total stop
  • 15h 20m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (฿102,392 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,280 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 27 June 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

Thu 22/10

23:30-13:14

1 stop27h 44m

Seattle/Tacoma Intl

Fri 6/11

13:00-00:45

1 stop20h 45m

฿25,656

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 3/10

02:35-10:40

1 stop22h 05m

Seattle/Tacoma Intl

Sun 28/3

12:50-23:35

1 stop20h 45m

฿26,290
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 19/8

09:50-13:37

1 stop17h 47m

Seattle/Tacoma Intl

Thu 27/8

13:05-23:35

1 stop20h 30m

฿26,390

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 14/7

07:00-16:20

2 stops23h 20m

Seattle/Tacoma Intl

Sat 25/7

16:30-04:35

1 stop22h 05m

฿26,724

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

฿26,891

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 24/9

15:45-01:15

2 stops23h 30m

Seattle/Tacoma Intl

Sun 27/9

16:30-04:35

1 stop22h 05m

฿27,291

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:35-23:26

2 stops27h 51m

Seattle/Tacoma Intl

Sat 17/10

12:16-09:35

2 stops31h 19m

฿27,858

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/12

21:30-15:25

2 stops32h 55m

Seattle/Tacoma Intl

Mon 28/12

07:20-00:45

2 stops26h 25m

฿28,993

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 26/7

11:45-15:45

1 stop18h 00m

Seattle/Tacoma Intl

Tue 15/9

00:10-10:40

1 stop20h 30m

฿30,327

BangkokSeattle

BKK - SEA

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

฿30,794

Flights are sorted by cheapest return flights first.

Deals found on 22/6

Showing 1-10 of 42 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, October is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿17,182). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿24,522). 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?

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

The best time to book flights from Bangkok to Seattle is 11 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 27 June 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
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.
EVA Air
8.5
Very Good
1,484 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.
Asiana Airlines
8.1
Very Good
550 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.
เดลต้า
7.8
Good
8,453 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.
Philippine Airlines
7.3
Good
1,002 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Boarding

8.9

Crew

9.2

Comfort

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Reviews

1 / 14
8.0
Excellent

Andrew,Jun 2026

SEA - TPE

Great value for a coach ticket. Fantastic leg room for a 6’3”” man.

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, Korean Air, and United Airlines can get you from Bangkok to Seattle in just under 22h 05m. Your travel time can differ by up to 5h 39m. 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 (฿21,526), China Airlines (฿22,274), and Asiana Airlines (฿22,368) 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 ฿13,277 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿14,379 and China Airlines from ฿15,794 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, October is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿17,182). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿24,522). 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 27 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,526Average฿22,892FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿22,274Average฿26,861FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿22,368Average฿24,743FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿24,567Average฿27,469FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,533Average฿30,516FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿30,508Average฿30,709FlexibilityNo 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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