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Cheap flights from Bangkok to Seattle from ฿16,259

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
15 May — 22 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 15 April 2026.

Thu 17/1214:20
BKK
-
SEA
1 stop38h 00m
ANA
Thu 14/110:35
SEA
-
BKK
2 stops28h 55m
ANA
Deal found 11/4฿22,693
Wed 16/907:00
BKK
-
SEA
2 stops23h 15m
ANA
Wed 21/1016:30
SEA
-
BKK
1 stop23h 25m
ANA
Deal found 14/4฿22,821
Thu 15/1015:45
BKK
-
SEA
3 stops31h 37m
United Airlines
Sun 18/1005:15
SEA
-
BKK
2 stops38h 20m
United Airlines
Deal found 15/4฿22,949
Tue 15/909:35
BKK
-
SEA
1 stop18h 50m
ANA
Tue 20/1016:30
SEA
-
BKK
1 stop33h 00m
ANA
Deal found 14/4฿22,981
Thu 4/615:45
BKK
-
SEA
2 stops23h 44m
United Airlines
Mon 23/1106:57
SEA
-
BKK
2 stops37h 28m
United Airlines
Deal found 11/4฿23,045
Mon 9/1100:55
BKK
-
SEA
1 stop28h 00m
Multiple Airlines
Sun 22/1100:10
SEA
-
BKK
1 stop30h 20m
Multiple Airlines
Deal found 14/4฿24,645
Thu 18/621:40
BKK
-
SEA
1 stop31h 15m
Multiple Airlines
Sun 19/700:55
SEA
-
BKK
1 stop32h 40m
Multiple Airlines
Deal found 10/4฿24,773
Mon 1/609:35
BKK
-
SEA
1 stop18h 50m
United Airlines
Tue 1/917:22
SEA
-
BKK
2 stops26h 13m
United Airlines
Deal found 15/4฿25,189
Fri 23/1011:05
DMK
-
SEA
2 stops35h 40m
Multiple Airlines
Fri 30/1000:10
SEA
-
DMK
2 stops33h 00m
Multiple Airlines
Deal found 12/4฿34,983
Thu 15/1021:45
DMK
-
SEA
2 stops25h 00m
Multiple Airlines
Sun 18/1023:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 15/4฿38,376
Mon 25/507:30
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Wed 16/923:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 14/4฿39,080
Wed 29/716:50
DMK
-
SEA
2 stops33h 35m
Multiple Airlines
Sun 6/900:55
SEA
-
DMK
2 stops32h 10m
Multiple Airlines
Deal found 11/4฿40,777

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 15 April 2026.

Round-trip from

฿22,821

One-way from

฿16,259

Popular in

July

Cheapest in

March

Average price

฿27,590
ANA
  • ANA
  • 16/9-21/10
  • 3 total stops
  • 46h 40m total
  • Bangkok to Seattle
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 15/6
  • 1 total stop
  • 23h 45m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿134,766 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿21,715 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 15 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

Mon 1/6

23:30-13:25

1 stop27h 55m

Seattle/Tacoma Intl

Tue 1/9

13:00-23:35

1 stop20h 35m

฿25,990

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

21:40-10:40

1 stop27h 00m

Seattle/Tacoma Intl

Sat 17/10

12:50-21:45

1 stop18h 55m

฿26,406

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 6/10

21:40-13:14

1 stop29h 34m

Seattle/Tacoma Intl

Thu 15/10

12:35-01:05

1 stop22h 30m

฿26,694

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 6/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Mon 16/11

06:57-11:25

2 stops37h 28m

฿27,238

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 6/6

15:45-23:20

2 stops45h 35m

Seattle/Tacoma Intl

Tue 17/11

06:57-11:25

2 stops37h 28m

฿28,070

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 1/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Wed 16/9

19:35-09:35

2 stops24h 00m

฿28,966

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 27/4

09:35-23:27

2 stops51h 52m

Seattle/Tacoma Intl

Mon 4/5

16:30-04:35

1 stop22h 05m

฿29,446

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 8/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Sat 21/11

18:51-05:10

2 stops43h 19m

฿29,478

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 6/6

02:35-11:00

1 stop22h 25m

Seattle/Tacoma Intl

Sat 21/11

21:25-00:45

2 stops36h 20m

฿29,830

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:50-21:54

2 stops26h 04m

Seattle/Tacoma Intl

Sat 17/10

07:20-01:05

2 stops27h 45m

฿30,182

Flights are sorted by cheapest return flights first.

Deals found on 15/4

Showing 1-10 of 41 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 10 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, October is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿20,260). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,389). 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 15 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

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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
1,417 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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
8.0
Very Good
518 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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
8,409 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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
986 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Boarding

9.0

Overall

8.9

Comfort

8.9

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, Korean Air, and United Airlines can get you from Bangkok to Seattle in just under 18h 50m. Your travel time can differ by up to 9h 05m. 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 (฿20,651), Asiana Airlines (฿21,458), and China Airlines (฿23,533) 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 ฿12,737 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿13,795 and China Airlines from ฿15,032 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 ฿20,260). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,389). 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 15 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿20,651Average฿21,961FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿21,458Average฿23,017FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
China AirlinesCheapest฿23,533Average฿25,769FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
STARLUX AirlinesCheapest฿23,568Average฿26,773FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿25,454Average฿29,174FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿26,765Average฿29,460FlexibilityNo 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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