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Cheap flights from Bangkok to Seattle from ฿16,760

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
30 May — 6 Jun1
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 30 April 2026.

Sun 20/923:30
BKK
-
SEA
1 stop29h 45m
Multiple Airlines
Thu 29/1000:10
SEA
-
BKK
1 stop23h 15m
Multiple Airlines
Deal found 30/4฿18,195
Thu 3/923:30
BKK
-
SEA
1 stop29h 45m
Multiple Airlines
Sun 6/900:10
SEA
-
BKK
1 stop31h 35m
Multiple Airlines
Deal found 26/4฿20,054
Wed 2/923:30
BKK
-
SEA
1 stop29h 45m
Multiple Airlines
Sun 6/900:10
SEA
-
BKK
1 stop34h 55m
Multiple Airlines
Deal found 26/4฿21,162
Sun 14/602:35
BKK
-
SEA
1 stop26h 40m
Multiple Airlines
Fri 26/600:10
SEA
-
BKK
1 stop33h 25m
Multiple Airlines
Deal found 30/4฿21,619
Fri 4/909:50
BKK
-
SEA
1 stop19h 25m
Multiple Airlines
Mon 28/900:10
SEA
-
BKK
1 stop34h 55m
Multiple Airlines
Deal found 29/4฿21,717
Tue 6/1011:45
BKK
-
SEA
1 stop17h 30m
Multiple Airlines
Tue 13/1000:10
SEA
-
BKK
1 stop34h 55m
Multiple Airlines
Deal found 27/4฿23,347
Thu 18/602:35
BKK
-
SEA
1 stop26h 40m
Multiple Airlines
Sun 19/700:10
SEA
-
BKK
1 stop34h 55m
Multiple Airlines
Deal found 26/4฿23,901
Sun 14/602:35
BKK
-
SEA
1 stop26h 40m
Multiple Airlines
Sun 28/600:10
SEA
-
BKK
1 stop33h 25m
Multiple Airlines
Deal found 27/4฿25,043
Tue 8/911:45
BKK
-
SEA
1 stop17h 30m
Asiana Airlines
Tue 20/1000:10
SEA
-
BKK
1 stop20h 30m
Asiana Airlines
Deal found 28/4฿25,401
Sat 24/1002:35
BKK
-
SEA
1 stop21h 25m
Korean Air
Sun 1/1111:00
SEA
-
BKK
1 stop35h 25m
Korean Air
Deal found 29/4฿25,629
Sun 13/1223:55
BKK
-
SEA
1 stop29h 00m
Asiana Airlines
Mon 28/1200:10
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Deal found 27/4฿25,727
Mon 14/1212:20
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Sun 27/1200:10
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Deal found 28/4฿25,760

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 30 April 2026.

Round-trip from

฿18,195

One-way from

฿16,760

Popular in

July

Cheapest in

March

Average price

฿28,140
20/9-29/10
  • 20/9-29/10
  • 2 total stops
  • 53h 00m total
  • Bangkok to Seattle
Search Deals
14/5
  • 14/5
  • 1 total stop
  • 19h 35m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿130,032 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿20,810 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 30 April 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 18/6

09:50-11:00

1 stop39h 10m

Seattle/Tacoma Intl

Wed 29/7

13:20-13:35

1 stop34h 15m

฿26,445

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

02:35-10:40

1 stop22h 05m

Seattle/Tacoma Intl

Sat 17/10

12:50-01:05

1 stop22h 15m

฿26,803

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 16/6

15:45-01:13

2 stops23h 28m

Seattle/Tacoma Intl

Mon 27/7

07:00-09:35

2 stops36h 35m

฿28,597

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 9/9

21:40-10:40

1 stop27h 00m

Seattle/Tacoma Intl

Tue 10/11

11:00-21:30

1 stop19h 30m

฿28,629

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

07:00-14:24

2 stops21h 24m

Seattle/Tacoma Intl

Wed 7/10

17:20-23:55

2 stops40h 35m

฿29,021

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 3/9

01:20-15:15

1 stop27h 55m

Seattle/Tacoma Intl

Mon 9/11

00:10-11:15

1 stop20h 05m

฿29,347

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

07:00-21:15

3 stops28h 15m

Seattle/Tacoma Intl

Thu 15/10

16:30-04:35

1 stop22h 05m

฿29,705

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 3/9

02:35-13:37

1 stop25h 02m

Seattle/Tacoma Intl

Fri 13/11

13:00-00:45

1 stop20h 45m

฿30,455

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 14/6

02:30-14:45

1 stop26h 15m

Seattle/Tacoma Intl

Sat 20/6

16:25-06:20

1 stop23h 55m

฿31,857
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 9/7

13:20-19:45

1 stop20h 25m

Seattle/Tacoma Intl

Mon 7/9

01:55-12:10

1 stop20h 15m

฿32,086

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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

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

The best time to book flights from Bangkok to Seattle is 73 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.

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 ฿16,793). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿23,966). 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?

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 30 April 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

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
EVA Air
8.5
Very Good
1,435 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Asiana Airlines
8.1
Very Good
524 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
เดลต้า
7.9
Good
8,463 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Philippine Airlines
7.3
Good
994 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Comfort

8.9

Crew

9.2

Food

8.6

Entertainment

8.8

Overall

8.9

Boarding

8.9

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

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, United Airlines, and Emirates can get you from Bangkok to Seattle in just under 23h 28m. Your travel time can differ by up to 15h 42m. 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 (฿21,039), China Airlines (฿21,769), and Asiana Airlines (฿21,861) 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 ฿12,976 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿14,053 and China Airlines from ฿15,314 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 ฿16,793). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿23,966). 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 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,039Average฿22,373FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿21,769Average฿26,064FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿21,861Average฿23,449FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿24,010Average฿27,276FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿25,932Average฿29,721FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿27,268Average฿30,013FlexibilityNo 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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