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Cheap flights from Bangkok to Seattle from ฿16,168

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
2 May — 9 May1
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 2 April 2026.

Wed 7/1009:35
BKK
-
SEA
1 stop18h 50m
ANA
Sat 17/1016:30
SEA
-
BKK
1 stop23h 25m
ANA
Deal found 29/3฿22,505
Wed 3/621:40
BKK
-
SEA
1 stop29h 45m
เดลต้า
Mon 23/1113:00
SEA
-
BKK
1 stop41h 30m
เดลต้า
Deal found 30/3฿22,571
Thu 4/601:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Mon 23/1100:10
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Deal found 30/3฿22,766
Sat 6/601:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Sun 6/1200:10
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Deal found 30/3฿22,897
Wed 7/1009:35
BKK
-
SEA
2 stops25h 15m
United Airlines
Sat 17/1011:00
SEA
-
BKK
2 stops32h 35m
United Airlines
Deal found 31/3฿22,962
Fri 5/607:00
BKK
-
SEA
2 stops25h 30m
ANA
Sat 5/916:30
SEA
-
BKK
1 stop22h 05m
ANA
Deal found 31/3฿22,995
Wed 16/907:00
BKK
-
SEA
2 stops28h 56m
United Airlines
Sat 26/919:32
SEA
-
BKK
2 stops48h 03m
United Airlines
Deal found 2/4฿23,060
Sun 3/501:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Thu 21/500:55
SEA
-
BKK
1 stop32h 25m
Asiana Airlines
Deal found 29/3฿23,093
Fri 15/511:45
BKK
-
SEA
1 stop17h 10m
Asiana Airlines
Thu 21/500:55
SEA
-
BKK
1 stop32h 25m
Asiana Airlines
Deal found 31/3฿23,126
Tue 23/609:50
BKK
-
SEA
1 stop19h 05m
Multiple Airlines
Mon 3/800:55
SEA
-
BKK
1 stop34h 10m
Multiple Airlines
Deal found 1/4฿23,322
Sun 3/501:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Sun 17/500:55
SEA
-
BKK
1 stop19h 45m
Asiana Airlines
Deal found 29/3฿23,387
Sat 6/621:40
BKK
-
SEA
1 stop27h 20m
Korean Air
Sun 22/1111:00
SEA
-
BKK
1 stop19h 30m
Korean Air
Deal found 30/3฿23,583

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 2 April 2026.

Round-trip from

฿22,571

One-way from

฿16,168

Popular in

July

Cheapest in

March

Average price

฿29,136
เดลต้า
  • เดลต้า
  • 3/6-23/11
  • 2 total stops
  • 71h 15m total
  • Bangkok to Seattle
Search Deals
เดลต้า
  • เดลต้า
  • 2/5
  • 1 total stop
  • 29h 31m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿127,899 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿22,288 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 2 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
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 24/6

09:50-13:25

1 stop17h 35m

Seattle/Tacoma Intl

Wed 5/8

13:05-01:05

1 stop22h 00m

฿27,503

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 23/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Tue 4/8

08:30-09:35

2 stops35h 05m

฿29,658

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 30/4

09:35-18:32

2 stops46h 57m

Seattle/Tacoma Intl

Thu 7/5

16:30-04:35

1 stop22h 05m

฿29,724

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 23/6

23:30-16:47

2 stops31h 17m

Seattle/Tacoma Intl

Tue 4/8

10:05-13:35

2 stops37h 30m

฿30,410

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 27/6

07:00-14:25

1 stop21h 25m

Seattle/Tacoma Intl

Thu 6/8

06:30-09:35

2 stops37h 05m

฿32,664

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 3/6

02:35-13:25

1 stop24h 50m

Seattle/Tacoma Intl

Tue 8/12

07:20-23:20

2 stops25h 00m

฿38,772

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 15/6

06:40-14:55

2 stops22h 15m

Seattle/Tacoma Intl

Mon 3/8

00:55-17:10

1 stop26h 15m

฿39,392

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 21/5

02:05-12:45

1 stop24h 40m

Seattle/Tacoma Intl

Fri 19/6

08:50-06:20

2 stops31h 30m

฿40,046

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 23/5

02:05-12:45

1 stop24h 40m

Seattle/Tacoma Intl

Fri 19/6

08:50-06:20

2 stops31h 30m

฿40,046

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 14/4

19:00-19:54

2 stops62h 54m

Seattle/Tacoma Intl

Fri 1/5

16:30-13:05

1 stop30h 35m

฿40,111

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 43 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?

Use this chart to determine the optimal time to book a return flight from Bangkok to Seattle. Price data was last updated on 2 April 2026.

The best time to book flights from Bangkok to Seattle is 81 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, June is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿20,382). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,922). 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 2 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

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
EVA Air
8.5
Very Good
1,399 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Asiana Airlines
8.1
Very Good
509 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
เดลต้า
7.9
Good
8,374 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Philippine Airlines
7.3
Good
979 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Food

8.7

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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 and United Airlines can get you from Bangkok to Seattle in just under 17h 35m. Your travel time can differ by up to 1h 15m. 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 (฿21,075), Asiana Airlines (฿21,899), and China Airlines (฿24,016) 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 ฿12,998 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿13,608 and China Airlines from ฿15,340 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, June is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿20,382). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,922). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,075Average฿22,412FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿21,899Average฿23,489FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
China AirlinesCheapest฿24,016Average฿26,329FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
STARLUX AirlinesCheapest฿24,051Average฿27,323FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿25,977Average฿29,772FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿27,315Average฿30,064FlexibilityNo 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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