Find flights
When to book
Airlines
FAQs

Cheap flights from Bangkok to Seattle from ฿13,784

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
5 Mar — 12 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 3 February 2026.

Fri 3/413:50
BKK
-
SEA
1 stop33h 10m
ไห่หนานแอร์ไลน์
Sat 11/411:00
SEA
-
BKK
1 stop22h 00m
ไห่หนานแอร์ไลน์
Deal found 3/2฿20,281
Mon 16/301:05
BKK
-
SEA
1 stop21h 55m
ไห่หนานแอร์ไลน์
Tue 7/411:00
SEA
-
BKK
1 stop22h 00m
ไห่หนานแอร์ไลน์
Deal found 3/2฿20,313
Mon 23/309:40
BKK
-
SEA
1 stop19h 15m
Multiple Airlines
Sat 28/300:10
SEA
-
BKK
1 stop33h 30m
Multiple Airlines
Deal found 2/2฿20,439
Sun 31/501:20
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Mon 31/800:55
SEA
-
BKK
1 stop20h 20m
Asiana Airlines
Deal found 3/2฿20,691
Tue 14/413:25
BKK
-
SEA
1 stop20h 40m
Philippine Airlines
Fri 15/523:10
SEA
-
BKK
1 stop23h 00m
Philippine Airlines
Deal found 3/2฿20,912
Wed 20/509:35
BKK
-
SEA
2 stops29h 37m
United Airlines
Thu 30/716:30
SEA
-
BKK
1 stop22h 05m
United Airlines
Deal found 1/2฿21,007
Wed 15/413:25
BKK
-
SEA
1 stop20h 40m
Philippine Airlines
Tue 30/623:10
SEA
-
BKK
1 stop33h 30m
Philippine Airlines
Deal found 3/2฿21,164
Mon 1/609:35
BKK
-
SEA
1 stop18h 50m
ANA
Wed 16/908:35
SEA
-
BKK
2 stops25h 20m
ANA
Deal found 2/2฿21,196
Mon 1/609:35
BKK
-
SEA
2 stops26h 43m
United Airlines
Tue 1/916:30
SEA
-
BKK
1 stop22h 05m
United Airlines
Deal found 2/2฿21,228
Fri 5/609:35
BKK
-
SEA
1 stop18h 50m
United Airlines
Sat 5/919:32
SEA
-
BKK
2 stops24h 03m
United Airlines
Deal found 2/2฿21,291
Sat 18/409:20
DMK
-
SEA
2 stops23h 30m
Multiple Airlines
Thu 14/523:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 2/2฿30,816
Wed 15/407:25
DMK
-
SEA
2 stops21h 30m
Multiple Airlines
Thu 14/523:10
SEA
-
DMK
1 stop22h 15m
Multiple Airlines
Deal found 2/2฿31,889

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 3 February 2026.

Round-trip from

฿20,250

One-way from

฿13,784

Popular in

July

Cheapest in

December

Average price

฿26,684
Philippine Airlines
  • Philippine Airlines
  • 1/7-16/7
  • 2 total stops
  • 67h 55m total
  • Bangkok to Seattle
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 12/2
  • 1 total stop
  • 20h 20m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿107,836 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿20,223 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 3 February 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

Wed 20/5

09:35-01:12

2 stops29h 37m

Seattle/Tacoma Intl

Thu 30/7

06:30-04:35

2 stops32h 05m

฿21,669

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 1/6

09:35-22:18

2 stops26h 43m

Seattle/Tacoma Intl

Tue 1/9

05:15-23:55

2 stops28h 40m

฿22,142

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 31/3

12:20-14:55

1 stop16h 35m

Seattle/Tacoma Intl

Thu 4/6

00:55-23:10

1 stop32h 15m

฿22,552

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 1/7

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

Wed 12/8

12:25-00:10

1 stop21h 45m

฿23,404

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 21/7

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

Sat 1/8

12:25-10:00

1 stop31h 35m

฿24,098

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 22/7

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

Fri 31/7

20:04-10:00

2 stops23h 56m

฿27,157

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 21/7

07:35-10:20

1 stop16h 45m

Seattle/Tacoma Intl

Sun 2/8

07:55-00:10

2 stops26h 15m

฿27,157

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 14/4

15:45-18:35

3 stops40h 50m

Seattle/Tacoma Intl

Sun 17/5

07:08-09:35

2 stops36h 27m

฿27,347

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 13/4

11:00-10:05

1 stop37h 05m

Seattle/Tacoma Intl

Thu 14/5

19:55-10:00

2 stops24h 05m

฿29,176

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 18/4

23:40-20:05

1 stop34h 25m

Seattle/Tacoma Intl

Wed 13/5

23:10-18:30

1 stop29h 20m

฿30,122

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 40 results
1
2
3
4

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 30 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 ฿19,682). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,003). 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 3 February 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

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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
1,344 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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
803 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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
8,142 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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

Overall

8.9

Food

8.6

Crew

9.1

Boarding

8.9

Entertainment

8.8

Comfort

8.8

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?

    United Airlines, Asiana Airlines, and Cathay Pacific can get you from Bangkok to Seattle in just under 16h 35m. Your travel time can differ by up to 13h 02m. 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 (฿20,351), Asiana Airlines (฿22,138), and STARLUX Airlines (฿23,225) 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 ฿12,552 on Philippine Airlines. Other airlines that offer cheap prices include China Airlines from ฿14,932 and STARLUX Airlines from ฿15,005 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 ฿19,682). Flying from Bangkok to Seattle in July is currently the most expensive (average of ฿24,003). 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 3 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿20,351Average฿21,587FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿22,138Average฿30,441FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿23,225Average฿26,895FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
China AirlinesCheapest฿23,576Average฿25,433FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
EVA AirCheapest฿24,897Average฿27,686FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Korean AirCheapest฿26,150Average฿30,938FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
เดลต้าCheapest฿26,376Average฿29,032FlexibilityNo 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.