Bangkok

$367+ Cheap flights from Seattle (SEA) to Bangkok

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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Dec 13 — Dec 201
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Bangkok are usually found in September or February, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Find flight deals from Seattle to Bangkok

Cheapest flights from Seattle to Bangkok
Explore the most affordable flight options available from Seattle to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/239:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
Sat 12/611:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
Deal found 11/11$675
This CrystalTravel deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:40 pmSEA - BKK
1 stop23h 50mANA
Wed 12/179:10 amBKK - SEA
2 stops26h 50mANA
Deal found 11/11$680
This Trip.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Sun 11/3011:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 11/11$682
This Gurufare deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:30 pmSEA - BKK
1 stop34h 30mPhilippine Airlines
Thu 12/41:20 pmBKK - SEA
1 stop20h 20mPhilippine Airlines
Deal found 11/12$683
This SmartFares deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:05 amSEA - BKK
2 stops41h 00mHainan Airlines
Fri 12/51:05 amBKK - SEA
1 stop21h 55mHainan Airlines
Deal found 11/12$686
This Asiana Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Thu 1/2211:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 11/11$687
This oojo deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:05 amSEA - BKK
1 stop33h 35mHainan Airlines
Mon 12/14:15 pmBKK - SEA
1 stop30h 45mHainan Airlines
Deal found 11/12$694
This Asiana Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Wed 1/2112:20 pmBKK - SEA
1 stop16h 35mAsiana Airlines
Deal found 11/11$695
This Asiana Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Thu 1/2211:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 11/11$696
This Trip.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Wed 1/2812:20 pmBKK - SEA
1 stop16h 35mAsiana Airlines
Deal found 11/11$697
This Korean Air deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2611:00 amSEA - BKK
1 stop22h 45mKorean Air
Sat 1/249:40 amBKK - SEA
1 stop38h 20mKorean Air
Deal found 11/13$698
This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:10 amSEA - DMK
1 stop28h 40mMultiple Airlines
Tue 11/257:45 amDMK - SEA
1 stop25h 25mMultiple Airlines
Deal found 11/12$917

Cheap flight deals from Seattle to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bangkok (TH1). 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 November 13, 2025.

Round-trip from

$675
(FlightHub)

One-way from

$367
(oojo)

Popular in

June

Cheapest in

September

Average price

$816
From Seattle/Tacoma Intl to Bangkok
One-way flight from Seattle/Tacoma Intl to Bangkok
Highest demand for flights based on searches. 15% potential increase in price ($162 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Average for round-trip flights in November 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Bangkok 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 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Seattle to Bangkok that are best for you.

Fly from

Seattle

Fly to

Bangkok

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 3/9

12:10 am-10:00 pm

1 stop31h 50m

Bangkok Suvarnabhumi

Tue 3/24

11:55 pm-2:55 pm

1 stop29h 00m

$679

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Thu 3/26

11:55 pm-2:55 pm

1 stop29h 00m

$679

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Tue 3/24

11:55 pm-2:55 pm

1 stop29h 00m

$679

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/7

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Sat 1/31

11:55 pm-1:55 pm

1 stop29h 00m

$687

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 1/25

11:00 am-1:25 pm

1 stop35h 25m

Bangkok Suvarnabhumi

Sat 2/7

2:05 am-9:00 am

1 stop21h 55m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 2/3

11:00 am-1:25 pm

1 stop35h 25m

Bangkok Suvarnabhumi

Tue 2/10

2:05 am-9:00 am

1 stop21h 55m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 11/24

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

Sat 1/24

9:40 am-9:00 am

1 stop38h 20m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 1/19

7:15 am-12:45 am

2 stops26h 30m

Bangkok Suvarnabhumi

Tue 2/3

9:40 am-9:00 am

1 stop38h 20m

$703

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/14

7:15 am-12:55 am

2 stops26h 40m

Bangkok Suvarnabhumi

Mon 1/19

9:40 am-9:00 am

1 stop38h 20m

$703

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 11/23

7:59 pm-12:55 am

2 stops37h 56m

Bangkok Suvarnabhumi

Tue 1/20

12:55 am-9:00 am

1 stop23h 05m

$703

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 40 results
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Best time to book a flight from Seattle to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Seattle with our price prediction graph.
Estimated round-trip 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 Seattle to Bangkok

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $528). Flying from Seattle to Bangkok in June is currently the most expensive (average of $991). 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.

What is the cheapest time of day to fly from SEA to BKK?

Find hourly flight availability from Seattle to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Bangkok in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Seattle to Bangkok?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Bangkok. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Bangkok flight should consider departing on Tuesday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Seattle to Bangkok?

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. 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 Bangkok. Reviews last updated November 13, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air, and ANA from Seattle to Bangkok. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
8.4
Very good

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Boarding

8.9

Comfort

8.9

Food

8.7

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bangkok. 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 from for flights from Seattle to Bangkok?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Bangkok. 17 airlines have flights from Seattle/Tacoma Intl to Bangkok on a regular basis. Booking flights from Seattle/Tacoma Intl to Bangkok should not be difficult; the airport handles an average of 0 outbound flights to Bangkok per day.

  • How long is the flight from Seattle to Bangkok?

    Asiana Airlines and Korean Air can get you from Seattle to Bangkok in just under 31h 50m. Your travel time can differ by up to 3h 35m. There are 7443 mi between Seattle and Bangkok. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Delta, at $433, was found to be the cheapest airline from Seattle to Bangkok.Alternate airlines to your destination round-trip include Singapore Airlines and Philippine Airlines. Delta is 51% cheaper than the average price of flights available within the next 90 days to this destination.

  • Where are the most common layover locations when flying from Seattle to Bangkok?

  • What are some popular things to do or see while on a layover in Taipei City?

    Taipei 101, Shilin Night Market, and Raohe Street Night Market are currently the most popular points of interest in Taipei City at the moment. Those on a layover in Taipei City interested in visiting Taipei 101, Shilin Night Market, or Raohe Street Night Market can do so by traveling 21.0 mi, 18.3 mi, and 21.6 mi, respectively from Taipei City Taiwan Taoyuan Intl. Travelers can book a car rental at Taipei City Taiwan Taoyuan Intl for about $72 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Seoul?

    The majority of Seoul visitors spend their time at Lotte World, Dongdaemun Market, and Bukchon Hanok Village. Lotte World, Dongdaemun Market, and Bukchon Hanok Village can be accessed by traveling approximately 35.7 mi, 31.6 mi, and 30.6 mi, respectively from Incheon Intl. Travelers in need of a car in Seoul can rent one for about $65 per day.

  • What are points of interest worth seeing during a layover in Tokyo?

    Most Tokyo visitors opt to spend their time at Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower. Akihabara Electric Town, Tsukiji Outer Market and Tokyo Tower are located about 10.3 mi, 7.9 mi, and 7.9 mi, respectively from Tokyo Haneda if you are interested in checking them out. Those on a layover in Tokyo in need of a rental car can book one at Tokyo Haneda for about $57.

  • Where are the least popular layover locations for Seattle to Bangkok flights?

  • Can I find deals for flights from Seattle to Bangkok that include hotel bookings?

    Yes. In addition to deals on Seattle to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Bangkok.

  • Can I find deals for business class flights from Seattle to Bangkok?

    Yes. Cheapflights offers flight deals from Seattle to Bangkok 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 Seattle to Bangkok?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $528). Flying from Seattle to Bangkok in June is currently the most expensive (average of $991). 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

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Top 10 airlines flying from Seattle to Bangkok

Discover the top 10 airlines that operate flights from Seattle to Bangkok. 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 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$890FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$525Average$720FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$609Average$711FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$618Average$694FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$670Average$752FlexibilityNo cancel feeOn-time81%
ANACheapest$703Average$887FlexibilityNo cancel feeOn-time80%
Cathay PacificCheapest$735Average$798FlexibilityNo cancel feeOn-time72%
STARLUX AirlinesCheapest$739Average$861FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$741Average$837FlexibilityNo cancel feeOn-time70%
China EasternCheapest$754Average$903FlexibilityNo cancel feeOn-time62%

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