Find flights
When to book
Airlines
FAQs

Cheap flights from Bangkok to Seattle from ฿13,952

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
1 abr — 8 abr1
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 março 2026.

seg 16/301:05
BKK
-
SEA
1 stop21h 55m
ไห่หนานแอร์ไลน์
ter 7/411:00
SEA
-
BKK
1 stop22h 00m
ไห่หนานแอร์ไลน์
Deal found 26/2฿19,967
dom 31/501:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
seg 31/800:55
SEA
-
BKK
1 stop19h 45m
Asiana Airlines
Deal found 28/2฿20,432
dom 31/501:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
ter 15/900:55
SEA
-
BKK
1 stop32h 25m
Asiana Airlines
Deal found 26/2฿20,463
qua 22/401:20
BKK
-
SEA
1 stop27h 35m
Multiple Airlines
ter 5/500:55
SEA
-
BKK
1 stop22h 40m
Multiple Airlines
Deal found 27/2฿20,525
ter 14/411:45
BKK
-
SEA
1 stop17h 10m
Asiana Airlines
ter 21/400:55
SEA
-
BKK
1 stop19h 45m
Asiana Airlines
Deal found 1/3฿20,618
qui 14/511:45
BKK
-
SEA
1 stop17h 10m
Asiana Airlines
sex 29/500:55
SEA
-
BKK
1 stop32h 25m
Asiana Airlines
Deal found 28/2฿20,742
sex 5/607:00
BKK
-
SEA
2 stops25h 30m
ANA
sáb 5/909:55
SEA
-
BKK
2 stops28h 40m
ANA
Deal found 26/2฿20,773
qua 15/423:40
BKK
-
SEA
1 stop34h 25m
Philippine Airlines
ter 30/623:10
SEA
-
BKK
1 stop33h 30m
Philippine Airlines
Deal found 26/2฿20,959
qui 23/407:30
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
ter 5/500:55
SEA
-
DMK
2 stops26h 40m
Multiple Airlines
Deal found 27/2฿26,478
ter 14/715:30
DMK
-
SEA
2 stops42h 35m
Multiple Airlines
qua 16/923:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 26/2฿27,594
seg 13/702:15
DMK
-
SEA
2 stops24h 42m
Multiple Airlines
dom 13/923:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 26/2฿30,322
qui 26/1113:50
DMK
-
SEA
2 stops18h 40m
Multiple Airlines
dom 29/1123:55
SEA
-
DMK
1 stop20h 45m
Multiple Airlines
Deal found 28/2฿30,602

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 março 2026.

Round-trip from

฿19,967

One-way from

฿13,952

Popular in

July

Cheapest in

March

Average price

฿22,819
ไห่หนานแอร์ไลน์
  • ไห่หนานแอร์ไลน์
  • 16/3-7/4
  • 2 total stops
  • 43h 55m total
  • Bangkok to Seattle
Search Deals
1/4
  • 1/4
  • 2 total stops
  • 42h 35m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿121,321 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿21,145 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 março 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

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

qua 11/3

23:50-19:40

1 stop33h 50m

Seattle/Tacoma Intl

qua 29/4

23:10-22:40

1 stop33h 30m

฿22,385

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

qua 11/3

23:50-19:40

1 stop33h 50m

Seattle/Tacoma Intl

qui 19/3

22:30-23:00

1 stop34h 30m

฿23,222

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

sex 22/5

07:00-01:29

2 stops32h 29m

Seattle/Tacoma Intl

dom 31/5

16:30-04:35

1 stop22h 05m

฿26,323

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

sáb 6/6

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

qua 26/8

19:56-10:00

2 stops24h 04m

฿26,881

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

seg 1/6

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

dom 23/8

19:55-11:05

2 stops25h 10m

฿27,160

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

sex 29/5

13:25-20:05

1 stop20h 40m

Seattle/Tacoma Intl

dom 31/5

23:10-12:10

1 stop23h 00m

฿28,865

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

seg 13/7

02:15-12:57

2 stops24h 42m

Seattle/Tacoma Intl

dom 13/9

23:10-11:25

1 stop22h 15m

฿30,322

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

qua 11/3

07:55-23:43

2 stops29h 48m

Seattle/Tacoma Intl

ter 31/3

08:10-00:10

2 stops26h 00m

฿30,353

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

qui 28/5

07:00-16:20

2 stops23h 20m

Seattle/Tacoma Intl

sex 29/5

16:30-04:35

1 stop22h 05m

฿30,632

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

sex 15/5

17:30-10:05

1 stop30h 35m

Seattle/Tacoma Intl

seg 1/6

19:55-10:00

2 stops24h 05m

฿31,563

Flights are sorted by cheapest return flights first.

Deals found on 27/2

Showing 1-10 of 46 resultsSorted by cheapest first
1
2
3
...
5

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 27 February 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 ฿19,347). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿23,594). 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 março 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

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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
8.4
Very Good
1,362 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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

Entertainment

8.8

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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
8.1
Very Good
502 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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
962 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Entertainment

8.8

Comfort

8.9

Boarding

8.9

Food

8.7

Overall

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 7 different airlines.

  • How long is the flight from Bangkok to Seattle?

    Philippine Airlines, United Airlines, and Cathay Pacific can get you from Bangkok to Seattle in just under 16h 45m. Your travel time can differ by up to 17h 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 (฿20,004), Asiana Airlines (฿20,786), and STARLUX Airlines (฿22,830) offers the cheapest pricing from Bangkok to Seattle. Philippine Airlines is priced at 26% 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 ฿12,338 on Philippine Airlines. Other airlines that offer cheap prices include China Airlines from ฿14,561 and STARLUX Airlines from ฿14,749 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 ฿19,347). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿23,594). 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 7 airlines flying from Bangkok to Seattle

Discover the top 7 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 março 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿20,004Average฿21,219FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿20,786Average฿21,854FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿22,830Average฿26,557FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapest฿23,174Average฿25,000FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapest฿24,657Average฿27,214FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Korean AirCheapest฿25,705Average฿30,411FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
เดลต้าCheapest฿25,927Average฿28,538FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.