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Cheap flights from Bangkok to Seattle from ฿13,439

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
23 Feb — 2 Mar1
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 24 January 2026.

Fri 6/309:40
BKK
-
SEA
1 stop19h 15m
Multiple Airlines
Sat 21/300:10
SEA
-
BKK
1 stop31h 20m
Multiple Airlines
Deal found 22/1฿19,972
Mon 16/301:05
BKK
-
SEA
1 stop21h 55m
ไห่หนานแอร์ไลน์
Tue 7/411:00
SEA
-
BKK
1 stop35h 20m
ไห่หนานแอร์ไลน์
Deal found 23/1฿20,003
Thu 27/802:35
BKK
-
SEA
1 stop26h 50m
Multiple Airlines
Fri 25/900:55
SEA
-
BKK
1 stop34h 10m
Multiple Airlines
Deal found 23/1฿20,065
Sun 8/302:05
BKK
-
SEA
1 stop26h 50m
Multiple Airlines
Sun 15/300:10
SEA
-
BKK
1 stop23h 15m
Multiple Airlines
Deal found 22/1฿20,159
Sun 8/302:05
BKK
-
SEA
1 stop26h 50m
Multiple Airlines
Mon 23/300:10
SEA
-
BKK
1 stop34h 45m
Multiple Airlines
Deal found 23/1฿20,408
Tue 3/323:55
BKK
-
SEA
1 stop29h 00m
Asiana Airlines
Mon 23/300:10
SEA
-
BKK
1 stop31h 50m
Asiana Airlines
Deal found 23/1฿20,439
Mon 30/300:40
BKK
-
SEA
1 stop22h 20m
ไห่หนานแอร์ไลน์
Thu 16/411:05
SEA
-
BKK
1 stop33h 30m
ไห่หนานแอร์ไลน์
Deal found 22/1฿20,625
Tue 31/312:20
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Thu 4/600:55
SEA
-
BKK
1 stop32h 15m
Asiana Airlines
Deal found 22/1฿20,719
Mon 1/619:30
BKK
-
SEA
1 stop38h 35m
Philippine Airlines
Wed 16/923:10
SEA
-
BKK
1 stop23h 00m
Philippine Airlines
Deal found 23/1฿20,750
Wed 8/419:20
BKK
-
SEA
2 stops27h 45m
ไห่หนานแอร์ไลน์
Sat 18/411:00
SEA
-
BKK
1 stop22h 00m
ไห่หนานแอร์ไลน์
Deal found 22/1฿20,937
Tue 14/413:25
BKK
-
SEA
1 stop20h 40m
Philippine Airlines
Wed 3/623:10
SEA
-
BKK
1 stop23h 00m
Philippine Airlines
Deal found 21/1฿20,968
Fri 3/407:30
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Thu 16/400:55
SEA
-
DMK
2 stops26h 40m
Multiple Airlines
Deal found 22/1฿31,420

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 24 January 2026.

Round-trip from

฿19,972

One-way from

฿13,439

Popular in

July

Cheapest in

December

Average price

฿28,372
6/3-21/3
  • 6/3-21/3
  • 2 total stops
  • 50h 35m total
  • Bangkok to Seattle
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 18/3
  • 1 total stop
  • 20h 20m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿101,271 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿19,370 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 24 January 2026.
Use the filters below to find and compare flights from Bangkok to Seattle that are best for you.

Fly from

Bangkok

Fly to

Seattle

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 23/3

12:20-14:55

1 stop16h 35m

Seattle/Tacoma Intl

Sun 29/3

00:55-11:15

1 stop20h 20m

฿21,870

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 20/3

12:20-14:55

1 stop16h 35m

Seattle/Tacoma Intl

Mon 30/3

00:55-23:10

1 stop32h 15m

฿21,870

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 20/3

23:55-14:55

1 stop29h 00m

Seattle/Tacoma Intl

Sat 28/3

00:10-11:15

1 stop21h 05m

฿21,870

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 3/4

12:20-14:55

1 stop16h 35m

Seattle/Tacoma Intl

Thu 16/4

00:55-11:15

1 stop20h 20m

฿21,994

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 23/3

12:20-14:55

1 stop16h 35m

Seattle/Tacoma Intl

Tue 31/3

00:55-11:15

1 stop20h 20m

฿22,461

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 24/3

23:55-14:55

1 stop29h 00m

Seattle/Tacoma Intl

Tue 31/3

00:55-11:15

1 stop20h 20m

฿22,461

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 22/3

23:55-14:55

1 stop29h 00m

Seattle/Tacoma Intl

Tue 31/3

00:55-11:15

1 stop20h 20m

฿22,461

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 1/7

19:00-10:20

1 stop29h 20m

Seattle/Tacoma Intl

Wed 12/8

12:25-23:50

1 stop21h 25m

฿23,176

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 1/3

23:55-13:55

1 stop29h 00m

Seattle/Tacoma Intl

Mon 16/3

00:10-22:00

1 stop31h 50m

฿24,234

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 5/6

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Sat 5/9

17:00-09:35

2 stops26h 35m

฿24,763

Flights are sorted by cheapest return flights first.

Deals found on 23/1

Showing 1-10 of 40 results
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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 16 January 2026.

The best time to book flights from Bangkok to Seattle is 65 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 ฿19,412). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿23,674). 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.

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 24 January 2026.
Read through reviews of airlines operating flights from Bangkok to Seattle, such as STARLUX Airlines, EVA Air, andChina 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

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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
8.4
Very Good
1,332 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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.
China Airlines
8.3
Very Good
799 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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
8,110 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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
955 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Food

8.6

Comfort

8.8

Crew

9.1

Boarding

8.9

Overall

8.9

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?

    Asiana Airlines can get you from Bangkok to Seattle in just under 16h 35m. Your travel time can differ by up to . Bangkok and Seattle are separated by a distance of 11978 km.

  • What are the cheapest airlines flying from Bangkok to Seattle round-trip?

    According to our current data, Philippine Airlines (฿20,072), STARLUX Airlines (฿22,907), and China Airlines (฿23,253) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 27% 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 ฿12,380 on Philippine Airlines. Other airlines that offer cheap prices include China Airlines from ฿14,544 and STARLUX Airlines from ฿14,799 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 ฿19,412). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿23,674). 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 24 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿20,072Average฿21,291FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
STARLUX AirlinesCheapest฿22,907Average฿26,527FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapest฿23,253Average฿25,085FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapest฿24,741Average฿27,306FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Korean AirCheapest฿25,791Average฿30,513FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
เดลต้าCheapest฿26,015Average฿28,634FlexibilityNo 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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