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Cheap flights from Bangkok to Seattle from ฿16,696

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
21 Aug — 28 Aug1
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 22 July 2026.

Wed 14/1002:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Thu 5/1111:00
SEA
-
BKK
1 stop19h 30m
Korean Air
Deal found 19/7฿25,549
Tue 25/823:30
BKK
-
SEA
1 stop25h 30m
Korean Air
Sat 29/813:20
SEA
-
BKK
1 stop18h 25m
Korean Air
Deal found 19/7฿25,582
Wed 2/902:35
BKK
-
SEA
1 stop22h 05m
Korean Air
Thu 10/912:50
SEA
-
BKK
1 stop22h 15m
Korean Air
Deal found 20/7฿25,852
Thu 22/1011:45
BKK
-
SEA
1 stop17h 30m
Asiana Airlines
Thu 5/1100:10
SEA
-
BKK
1 stop20h 05m
Asiana Airlines
Deal found 19/7฿25,885
Tue 20/1009:50
BKK
-
SEA
1 stop17h 24m
เดลต้า
Wed 28/1013:40
SEA
-
BKK
1 stop21h 05m
เดลต้า
Deal found 18/7฿25,953
Sat 3/1001:35
BKK
-
SEA
1 stop27h 40m
Asiana Airlines
Sun 21/300:10
SEA
-
BKK
1 stop21h 05m
Asiana Airlines
Deal found 20/7฿25,986
Thu 27/821:40
BKK
-
SEA
1 stop29h 57m
เดลต้า
Wed 9/913:00
SEA
-
BKK
1 stop22h 05m
เดลต้า
Deal found 21/7฿26,054
Thu 15/1011:45
BKK
-
SEA
1 stop17h 30m
Asiana Airlines
Fri 30/1000:10
SEA
-
BKK
1 stop21h 05m
Asiana Airlines
Deal found 21/7฿26,087
Sun 25/1023:55
BKK
-
SEA
1 stop29h 00m
Asiana Airlines
Fri 30/1000:10
SEA
-
BKK
1 stop21h 05m
Asiana Airlines
Deal found 20/7฿26,121
Tue 6/1021:40
BKK
-
SEA
1 stop27h 00m
Korean Air
Thu 15/1012:50
SEA
-
BKK
1 stop22h 15m
Korean Air
Deal found 20/7฿26,155
Fri 25/1212:20
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Mon 4/100:10
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Deal found 20/7฿26,458
Mon 24/806:15
DMK
-
SEA
1 stop24h 20m
Multiple Airlines
Wed 26/801:15
SEA
-
DMK
1 stop25h 25m
Multiple Airlines
Deal found 20/7฿38,475

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 22 July 2026.

Round-trip from

฿25,549

One-way from

฿16,696

Popular in

August

Cheapest in

March

Average price

฿30,935
Korean Air
  • Korean Air
  • 14/10-5/11
  • 2 total stops
  • 41h 35m total
  • Bangkok to Seattle
Search Deals
Cathay Pacific
  • Cathay Pacific
  • 23/9
  • 1 total stop
  • 16h 30m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿86,756 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,934 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 22 July 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 26/10

09:10-14:20

1 stop19h 10m

Seattle/Tacoma Intl

Wed 28/10

08:50-11:30

2 stops36h 40m

฿27,838

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

09:35-14:25

1 stop18h 50m

Seattle/Tacoma Intl

Sat 17/10

19:25-09:35

2 stops24h 10m

฿28,040

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 14/8

09:35-16:14

2 stops44h 39m

Seattle/Tacoma Intl

Wed 26/8

16:30-09:35

2 stops27h 05m

฿28,410

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 20/11

16:55-01:01

2 stops47h 06m

Seattle/Tacoma Intl

Mon 23/11

16:39-11:30

2 stops51h 51m

฿28,747

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 20/10

09:35-21:01

2 stops25h 26m

Seattle/Tacoma Intl

Wed 28/10

08:50-11:30

2 stops36h 40m

฿29,050

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 21/10

02:35-10:40

1 stop22h 05m

Seattle/Tacoma Intl

Fri 6/11

21:35-00:45

2 stops36h 10m

฿29,117
Fastest return journey

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/12

09:40-11:56

1 stop17h 16m

Seattle/Tacoma Intl

Mon 28/12

07:20-23:20

2 stops25h 00m

฿29,150

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Thu 10/9

13:30-13:25

1 stop37h 55m

Seattle/Tacoma Intl

Wed 28/10

17:05-10:00

1 stop26h 55m

฿52,377

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 10/8

13:30-13:25

1 stop37h 55m

Seattle/Tacoma Intl

Mon 7/9

17:15-11:25

1 stop28h 10m

฿56,382

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 10/8

13:30-13:25

1 stop37h 55m

Seattle/Tacoma Intl

Mon 24/8

17:15-12:30

1 stop29h 15m

฿57,291

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Showing 1-10 of 39 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

What is the cheapest month to book a flight from Bangkok to Seattle?

Currently, March is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿24,977). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,829). 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?

How far ahead should I book a flight from Bangkok to Seattle?

The best time to book flights from Bangkok to Seattle is 84 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.

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 22 July 2026.
Read through reviews of airlines operating flights from Bangkok to Seattle, such as EVA Air,China Airlines, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
EVA Air
8.5
Very Good
1,502 reviews
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
China Airlines
8.3
Very Good
838 reviews
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Asiana Airlines
8.1
Very Good
553 reviews
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
เดลต้า
7.8
Good
8,477 reviews
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Philippine Airlines
7.3
Good
1,011 reviews
EVA Air
8.5
Very Good
1,502 reviews
Check prices

Crew

8.7

Comfort

8.3

Entertainment

8.0

Overall

8.5

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

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?

    United Airlines and Emirates can get you from Bangkok to Seattle in just under 19h 10m. Your travel time can differ by up to 18h 45m. 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 (฿21,718), Asiana Airlines (฿22,567), and China Airlines (฿24,749) 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 ฿14,508 on STARLUX Airlines. Other airlines that offer cheap prices include China Airlines from ฿15,935 and Qatar Airways from ฿17,299 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, March is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿24,977). Flying from Bangkok to Seattle in August is currently the most expensive (average of ฿33,829). 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

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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 22 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,718Average฿23,096FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Asiana AirlinesCheapest฿22,567Average฿24,964FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
China AirlinesCheapest฿24,749Average฿27,133FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
STARLUX AirlinesCheapest฿24,786Average฿28,832FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿26,770Average฿30,788FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿30,780Average฿30,983FlexibilityNo 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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