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Cheap flights from Bangkok to Seattle from ฿16,949

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
31 Jul — 7 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 1 July 2026.

Thu 1/1023:30
BKK
-
SEA
1 stop25h 10m
Korean Air
Wed 14/1012:50
SEA
-
BKK
1 stop18h 55m
Korean Air
Deal found 1/7฿25,323
Tue 6/1009:50
BKK
-
SEA
1 stop17h 24m
เดลต้า
Thu 15/1013:00
SEA
-
BKK
1 stop20h 35m
เดลต้า
Deal found 26/6฿25,589
Wed 23/923:30
BKK
-
SEA
1 stop28h 07m
เดลต้า
Wed 28/1013:40
SEA
-
BKK
1 stop21h 05m
เดลต้า
Deal found 29/6฿25,656
Mon 19/1002:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Wed 28/1012:00
SEA
-
BKK
1 stop21h 20m
Korean Air
Deal found 28/6฿25,689
Sun 4/1023:30
BKK
-
SEA
1 stop27h 44m
เดลต้า
Sun 4/413:05
SEA
-
BKK
1 stop20h 30m
เดลต้า
Deal found 30/6฿25,888
Sun 13/1212:20
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Sun 27/1200:10
SEA
-
BKK
1 stop20h 05m
Asiana Airlines
Deal found 27/6฿25,955
Sat 3/1002:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Sun 28/312:50
SEA
-
BKK
1 stop20h 45m
Korean Air
Deal found 30/6฿25,988
Fri 21/809:50
BKK
-
SEA
1 stop17h 47m
เดลต้า
Thu 3/913:00
SEA
-
BKK
1 stop18h 45m
เดลต้า
Deal found 26/6฿26,154
Thu 20/813:20
BKK
-
SEA
1 stop20h 25m
China Airlines
Thu 3/901:55
SEA
-
BKK
1 stop17h 50m
China Airlines
Deal found 1/7฿26,287
Mon 30/1102:35
BKK
-
SEA
1 stop30h 35m
China Airlines
Sun 27/1200:10
SEA
-
BKK
1 stop18h 40m
China Airlines
Deal found 1/7฿26,387
Sun 16/813:20
BKK
-
SEA
1 stop20h 25m
China Airlines
Sat 29/801:55
SEA
-
BKK
1 stop20h 15m
China Airlines
Deal found 30/6฿26,453
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฿33,366

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 1 July 2026.

Round-trip from

฿25,323

One-way from

฿16,949

Popular in

August

Cheapest in

March

Average price

฿32,468
Korean Air
  • Korean Air
  • 1/10-14/10
  • 2 total stops
  • 44h 05m total
  • Bangkok to Seattle
Search Deals
China Airlines
  • China Airlines
  • 8/10
  • 1 total stop
  • 22h 25m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (฿100,577 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,076 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 1 July 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

Wed 21/10

02:35-13:14

1 stop24h 39m

Seattle/Tacoma Intl

Fri 6/11

13:00-13:25

1 stop33h 25m

฿25,589

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

09:50-13:14

1 stop17h 24m

Seattle/Tacoma Intl

Thu 15/10

13:00-23:35

1 stop20h 35m

฿25,589

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 13/10

21:40-10:40

1 stop27h 00m

Seattle/Tacoma Intl

Wed 14/10

12:50-23:35

1 stop20h 45m

฿25,689
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 21/8

09:50-13:37

1 stop17h 47m

Seattle/Tacoma Intl

Thu 3/9

13:00-21:45

1 stop18h 45m

฿26,154

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 26/8

07:00-21:58

2 stops28h 58m

Seattle/Tacoma Intl

Fri 28/8

16:30-04:35

1 stop22h 05m

฿26,719

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

09:35-23:26

2 stops27h 51m

Seattle/Tacoma Intl

Thu 15/10

16:30-04:35

1 stop22h 05m

฿26,752

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

฿26,819

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 4/10

09:35-21:01

2 stops49h 26m

Seattle/Tacoma Intl

Sun 21/3

06:29-11:30

2 stops39h 01m

฿27,184

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

฿27,284

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:35-21:01

2 stops25h 26m

Seattle/Tacoma Intl

Sat 17/10

14:55-09:35

2 stops28h 40m

฿27,683

Flights are sorted by cheapest return flights first.

Deals found on 26/6

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, October is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿17,115). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿24,426). 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 1 July 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

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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
8,452 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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
1,005 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Comfort

8.9

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 Emirates can get you from Bangkok to Seattle in just under 24h 39m. Your travel time can differ by up to 14h 36m. 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 (฿21,442), Asiana Airlines (฿22,280), and China Airlines (฿24,434) 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 ฿13,225 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿14,323 and China Airlines from ฿15,732 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 ฿17,115). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿24,426). 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 1 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,442Average฿22,802FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿22,280Average฿24,646FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
China AirlinesCheapest฿24,434Average฿26,788FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
STARLUX AirlinesCheapest฿24,471Average฿27,361FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,429Average฿30,397FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿30,389Average฿30,588FlexibilityNo 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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