Bangkok

$354+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jan 27 — Feb 31
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The best prices from Seattle/Tacoma Intl to Bangkok are usually found in February or January, booked 86 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 January 22, 2025.

Round-trip from

$653
(Booking.com)

One-way from

$354
(oojo)

Popular in

June

Cheapest in

February

Average price

$879
From Seattle/Tacoma Intl to Bangkok
One-way flight from Seattle/Tacoma Intl to Bangkok
Highest demand for flights based on searches. 18% potential increase in price ($233 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in January 2025

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 January 22, 2025.

This Booking.com deal was found by Cheapflights users on 1/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:45 pmSEA - BKK
1 stop20h 35mAsiana Airlines
Thu 3/1311:55 pmBKK - SEA
1 stop26h 00mAsiana Airlines
Deal found 1/21$653
This Gurufare deal was found by Cheapflights users on 1/22. 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.
Thu 10/210:15 amSEA - BKK
1 stop40h 40mSingapore Airlines
Sat 10/188:10 pmBKK - SEA
1 stop26h 35mSingapore Airlines
Deal found 1/22$683
This CrystalTravel deal was found by Cheapflights users on 1/21. 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.
Sun 3/912:00 pmSEA - BKK
1 stop22h 45mKorean Air
Thu 3/279:30 pmBKK - SEA
1 stop26h 30mKorean Air
Deal found 1/21$700
This eDestinos deal was found by Cheapflights users on 1/21. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:40 pmSEA - BKK
1 stop32h 50mANA
Tue 5/137:00 amBKK - SEA
2 stops22h 58mANA
Deal found 1/21$707
This Gurufare deal was found by Cheapflights users on 1/21. 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.
Mon 2/247:10 amSEA - BKK
2 stops29h 55mChina Eastern
Mon 3/35:05 amBKK - SEA
2 stops25h 49mChina Eastern
Deal found 1/21$739
This Gotogate deal was found by Cheapflights users on 1/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/912:45 pmSEA - BKK
1 stop20h 35mMultiple Airlines
Sat 2/156:45 pmBKK - SEA
1 stop38h 25mMultiple Airlines
Deal found 1/21$742
This Delta deal was found by Cheapflights users on 1/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/310:44 amSEA - BKK
1 stop23h 01mDelta
Wed 2/199:30 pmBKK - SEA
1 stop31h 00mDelta
Deal found 1/22$761
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:33 pmSEA - BKK
2 stops43h 02mUnited Airlines
Wed 5/289:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 1/21$771
This oojo deal was found by Cheapflights users on 1/21. 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.
Sun 3/212:10 amSEA - BKK
1 stop21h 55mChina Airlines
Tue 3/112:05 pmBKK - SEA
1 stop19h 10mChina Airlines
Deal found 1/21$772
This Gurufare deal was found by Cheapflights users on 1/20. 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.
Wed 2/1910:35 pmSEA - BKK
1 stop28h 10mPhilippine Airlines
Sun 5/111:30 pmBKK - SEA
1 stop19h 50mPhilippine Airlines
Deal found 1/20$794
This oojo deal was found by Cheapflights users on 1/22. 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.
Fri 2/2812:05 amSEA - BKK
1 stop21h 30mSTARLUX Airlines
Mon 3/315:50 pmBKK - SEA
1 stop36h 20mSTARLUX Airlines
Deal found 1/22$827
This FlightHub deal was found by Cheapflights users on 1/22. 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.
Tue 9/1612:30 amSEA - BKK
1 stop20h 35mEVA Air
Wed 10/811:10 amBKK - SEA
1 stop22h 20mEVA Air
Deal found 1/22$834

Find flights from Seattle to Bangkok within your budget

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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 3/6

12:45 pm-12:20 am

1 stop20h 35m

Bangkok Suvarnabhumi

Thu 3/13

11:55 pm-11:55 am

1 stop26h 00m

$653

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 5/1

4:40 pm-3:30 pm

1 stop32h 50m

Bangkok Suvarnabhumi

Tue 5/13

9:35 pm-2:25 pm

1 stop30h 50m

$699

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/9

12:00 pm-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

Thu 3/27

9:30 pm-10:00 am

1 stop26h 30m

$700

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 3/3

6:10 am-4:05 am

2 stops30h 55m

Bangkok Suvarnabhumi

Tue 3/11

5:05 am-4:55 pm

2 stops25h 50m

$740

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 2/9

12:45 pm-12:20 am

1 stop20h 35m

Bangkok Suvarnabhumi

Sat 2/15

6:45 pm-6:10 pm

1 stop38h 25m

$742

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/9

9:40 am-8:30 am

1 stop32h 50m

Bangkok Suvarnabhumi

Mon 3/24

9:35 am-8:10 am

1 stop36h 35m

$746

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 2/3

10:44 am-12:45 am

1 stop23h 01m

Bangkok Suvarnabhumi

Fri 4/4

9:50 am-1:30 pm

1 stop17h 40m

$761

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 5/3

7:33 pm-4:35 am

2 stops43h 02m

Bangkok Suvarnabhumi

Wed 5/28

9:35 am-2:25 pm

1 stop18h 50m

$771

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/2

12:10 am-9:50 am

1 stop18h 40m

Bangkok Suvarnabhumi

Mon 3/10

2:35 am-7:15 pm

1 stop30h 40m

$772

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 2/19

10:35 pm-5:45 pm

1 stop28h 10m

Bangkok Suvarnabhumi

Sun 5/11

1:30 pm-7:20 pm

1 stop19h 50m

$794

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 28 results
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The best insider tips for Seattle to Bangkok flights

Find out what our experts recommend to make the most of your Seattle to Bangkok trip
Airports
SEA

Plan to arrive at SEA at least two hours before your flight. Use SEA Spot Saver for free security screening appointments to reduce wait times.

Read more about SEAby Brandon Schultz
BKK

Use the Airport Rail Link for a quick 20-minute ride from BKK to Bangkok's city center, connecting to MRT or BTS for further travel.

Read more about BKKby Robert Schrader
Our travel experts
Robert Schrader

Robert Schrader

Expert on BKK

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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.

Travel insights for flights from Seattle to Bangkok

Get recent, data-driven insights about flights from Seattle to Bangkok including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Bangkok. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Bangkok, you should look to book at least 86 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $996). Flying from Seattle to Bangkok in June is currently the most expensive (average of $1,585). 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 January 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Bangkok in the morning. If you’re flexible enough to do this you can expect to save up to 9% 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 evenings 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.

Rainfall in Bangkok by month

Plan your trip to Bangkok by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bangkok ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Bangkok when rainfall is around 0.4 in.

Temperature in Bangkok by month

Plan your trip to Bangkok by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bangkok, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 January 22, 2025.
Read through reviews of airlines operating flights from Seattle to Bangkok, such as Asiana Airlines, ANA and China Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

9.1
Wonderful
137 reviews
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

8.5
Very good
1,039 reviews
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

8.4
Very good
1,252 reviews
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

8.4
Very good
852 reviews
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

8.2
Very good
737 reviews
9.1
Wonderful
137 reviews

Crew

9.3

Boarding

9.1

Entertainment

9.1

Food

9.0

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

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. 19 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.

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

    Asiana Airlines, at $653, was found to be the cheapest airline from Seattle to Bangkok.Alternate airlines to your destination round-trip include ANA and Korean Air. Asiana Airlines is 38% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Bangkok one-way?

    $354 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on Singapore Airlines and Qatar Airways, with prices starting from $357 and $407, respectively.

  • 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 $86 per day to make their sightseeing more efficient.

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

    The majority of Incheon visitors spend their time at G Tower, Wolmido Amusement Park, and Moraenae Market. G Tower, Wolmido Amusement Park, and Moraenae Market can be accessed by traveling approximately 10.7 mi, 8.3 mi, and 14.7 mi, respectively from Incheon Intl. Travelers in need of a car in Incheon can rent one for about $46 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, Roppongi Hills, and Tsukiji Outer Market. Akihabara Electric Town, Roppongi Hills and Tsukiji Outer Market are located about 10.3 mi, 8.5 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 $66.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $996). Flying from Seattle to Bangkok in June is currently the most expensive (average of $1,585). 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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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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$630Average$834FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$649Average$812FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$708Average$1,028FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$734Average$776FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$753Average$853FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
DeltaCheapest$760Average$1,119FlexibilityNo cancel feeOn-timeN/A
ANACheapest$762Average$975FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$787Average$993FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$817Average$1,020FlexibilityNo cancel feeOn-time77%
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