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Cheap flights from Bangkok to Seattle from ฿16,802

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
26 Jun — 3 Jul1
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 27 May 2026.

Mon 19/1000:40
BKK
-
SEA
1 stop22h 20m
ไห่หนานแอร์ไลน์
Tue 27/1011:00
SEA
-
BKK
1 stop37h 20m
ไห่หนานแอร์ไลน์
Deal found 26/5฿26,427
Wed 4/1123:15
BKK
-
SEA
1 stop27h 36m
เดลต้า
Fri 13/1113:00
SEA
-
BKK
1 stop20h 45m
เดลต้า
Deal found 22/5฿26,656
Wed 21/1009:50
BKK
-
SEA
1 stop17h 24m
เดลต้า
Wed 28/1013:40
SEA
-
BKK
1 stop33h 45m
เดลต้า
Deal found 25/5฿26,688
Sat 3/1023:30
BKK
-
SEA
1 stop25h 10m
Korean Air
Mon 22/211:00
SEA
-
BKK
1 stop22h 45m
Korean Air
Deal found 22/5฿26,753
Thu 10/921:40
BKK
-
SEA
1 stop27h 00m
Korean Air
Wed 23/912:50
SEA
-
BKK
1 stop22h 15m
Korean Air
Deal found 26/5฿26,819
Fri 23/1009:50
BKK
-
SEA
1 stop38h 50m
Korean Air
Mon 26/1012:00
SEA
-
BKK
1 stop19h 30m
Korean Air
Deal found 26/5฿26,851
Thu 1/1021:40
BKK
-
SEA
1 stop29h 34m
เดลต้า
Sat 31/1013:40
SEA
-
BKK
1 stop21h 05m
เดลต้า
Deal found 26/5฿26,884
Mon 1/609:35
BKK
-
SEA
1 stop18h 50m
United Airlines
Wed 16/907:11
SEA
-
BKK
2 stops36h 24m
United Airlines
Deal found 23/5฿27,080
Wed 17/623:30
BKK
-
SEA
1 stop27h 55m
เดลต้า
Sun 12/713:05
SEA
-
BKK
1 stop18h 40m
เดลต้า
Deal found 25/5฿27,243
Wed 4/1123:00
DMK
-
SEA
2 stops29h 55m
Multiple Airlines
Fri 13/1123:55
SEA
-
DMK
1 stop20h 45m
Multiple Airlines
Deal found 22/5฿40,587
Thu 5/1107:30
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Thu 12/1123:55
SEA
-
DMK
1 stop20h 45m
Multiple Airlines
Deal found 26/5฿40,978
Tue 20/1007:25
DMK
-
SEA
1 stop22h 45m
Multiple Airlines
Mon 26/1000:45
SEA
-
DMK
1 stop22h 50m
Multiple Airlines
Deal found 26/5฿42,414

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 27 May 2026.

Round-trip from

฿26,427

One-way from

฿16,802

Popular in

July

Cheapest in

March

Average price

฿28,907
ไห่หนานแอร์ไลน์
  • ไห่หนานแอร์ไลน์
  • 19/10-27/10
  • 2 total stops
  • 59h 40m total
  • Bangkok to Seattle
Search Deals
Qatar Airways
  • Qatar Airways
  • 11/7
  • 1 total stop
  • 40h 30m total
  • Bangkok to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (฿118,840 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿18,124 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 27 May 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

Sat 13/6

23:30-13:25

1 stop27h 55m

Seattle/Tacoma Intl

Sat 5/9

13:00-23:35

1 stop20h 35m

฿27,275

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 3/10

07:00-23:26

2 stops30h 26m

Seattle/Tacoma Intl

Mon 22/2

15:45-05:10

1 stop22h 25m

฿27,504

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 20/10

09:35-18:29

2 stops46h 54m

Seattle/Tacoma Intl

Tue 27/10

16:40-05:10

1 stop22h 30m

฿27,602

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 7/10

07:00-16:14

2 stops23h 14m

Seattle/Tacoma Intl

Sat 17/10

17:20-09:35

2 stops26h 15m

฿28,678

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 21/6

13:20-19:15

1 stop19h 55m

Seattle/Tacoma Intl

Sat 11/7

01:55-16:20

1 stop24h 25m

฿28,776

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 29/6

02:35-13:25

1 stop24h 50m

Seattle/Tacoma Intl

Thu 3/9

13:00-01:05

1 stop22h 05m

฿30,277

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 4/7

09:50-22:43

2 stops26h 53m

Seattle/Tacoma Intl

Mon 10/8

21:48-23:35

2 stops35h 47m

฿30,571

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 17/7

09:50-11:00

1 stop39h 10m

Seattle/Tacoma Intl

Sun 26/7

13:20-21:45

1 stop18h 25m

฿32,952

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 18/7

09:35-01:13

2 stops29h 38m

Seattle/Tacoma Intl

Fri 31/7

07:00-09:35

2 stops36h 35m

฿32,952

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 8/6

09:35-19:18

2 stops47h 43m

Seattle/Tacoma Intl

Tue 23/6

16:30-04:35

1 stop22h 05m

฿33,213

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 40 resultsSorted by cheapest first
1
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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, October is the cheapest month in which you can book a flight from Bangkok to Seattle (average of ฿16,802). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿23,980). 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 67 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 27 May 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

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
STARLUX Airlines
8.9
Very Good
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
EVA Air
8.5
Very Good
1,459 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Asiana Airlines
8.1
Very Good
535 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
เดลต้า
7.9
Good
8,426 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Philippine Airlines
7.3
Good
997 reviews
STARLUX Airlines
8.9
Very Good
Check prices

Crew

9.1

Boarding

8.9

Comfort

8.9

Overall

8.9

Food

8.6

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

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, United Airlines, and China Airlines can get you from Bangkok to Seattle in just under 19h 55m. Your travel time can differ by up to 10h 31m. 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 (฿21,051), China Airlines (฿21,782), and Asiana Airlines (฿21,874) 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 ฿12,984 on Philippine Airlines. Other airlines that offer cheap prices include STARLUX Airlines from ฿14,062 and China Airlines from ฿15,323 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 ฿16,802). Flying from Bangkok to Seattle in November is currently the most expensive (average of ฿23,980). 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 27 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest฿21,051Average฿22,386FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
China AirlinesCheapest฿21,782Average฿26,268FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Asiana AirlinesCheapest฿21,874Average฿23,777FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
STARLUX AirlinesCheapest฿24,024Average฿26,862FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
EVA AirCheapest฿25,947Average฿28,638FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
เดลต้าCheapest฿29,834Average฿30,030FlexibilityNo 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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