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$330+ Cheap flights from Seattle (SEA) to Thailand

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from Seattle to Thailand

Cheapest flights from Seattle to Thailand
Explore the most affordable flight options available from Seattle to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Wed 1/217:10 pmBKK - SEA
2 stops27h 55mMultiple Airlines
Deal found 12/29$750
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
Tue 1/271:20 pmBKK - SEA
1 stop20h 20mPhilippine Airlines
Deal found 12/29$754
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Fri 1/231:45 pmBKK - SEA
1 stop16h 20mMultiple Airlines
Deal found 12/29$788
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Fri 1/231:05 amBKK - SEA
1 stop21h 55mMultiple Airlines
Deal found 12/29$827
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Sun 1/255:50 pmBKK - SEA
1 stop15h 20mMultiple Airlines
Deal found 12/29$833
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Mon 1/265:50 pmBKK - SEA
1 stop15h 20mMultiple Airlines
Deal found 12/29$847
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - BKK
1 stop23h 30mMultiple Airlines
Tue 1/2710:40 amBKK - SEA
2 stops22h 30mMultiple Airlines
Deal found 12/29$875
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 12/309:06 amSEA - BKK
2 stops35h 19mUnited Airlines
Fri 1/234:55 pmBKK - SEA
2 stops35h 25mUnited Airlines
Deal found 12/29$901
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 12/305:05 pmSEA - BKK
2 stops27h 20mUnited Airlines
Sat 1/244:55 pmBKK - SEA
3 stops40h 32mUnited Airlines
Deal found 12/29$909
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - DMK
1 stop23h 10mMultiple Airlines
Tue 1/271:50 pmDMK - SEA
2 stops18h 40mMultiple Airlines
Deal found 12/29$1,045
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - DMK
1 stop23h 10mMultiple Airlines
Wed 1/211:50 pmDMK - SEA
2 stops19h 20mMultiple Airlines
Deal found 12/29$1,046
This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 pmSEA - DMK
1 stop23h 10mMultiple Airlines
Fri 1/231:50 pmDMK - SEA
2 stops19h 20mMultiple Airlines
Deal found 12/29$1,051

Find flight deals from Seattle to Thailand

Keep the following information in mind while searching for Seattle to Thailand flight deals. Data was last updated December 31, 2025.

Round-trip from

$583
(FlightHub)

One-way from

$330
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$1,238
From Seattle/Tacoma Intl to Thailand
Search Deals
One-way flight from Seattle/Tacoma Intl to Thailand
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Thailand 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 December 31, 2025.
Use the filters below to find and compare flights from Seattle to Thailand that are best for you.

Fly from

Seattle

Fly to

Thailand

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 4/8

12:50 pm-1:15 pm

1 stop34h 25m

Bangkok Suvarnabhumi

Thu 5/7

9:40 pm-10:40 am

1 stop27h 00m

$653

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 4/10

7:24 am-11:40 pm

2 stops26h 16m

Bangkok Suvarnabhumi

Sun 4/19

9:40 pm-10:40 am

1 stop27h 00m

$655

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/12

5:55 pm-9:45 pm

2 stops37h 50m

Bangkok Suvarnabhumi

Tue 4/28

9:50 am-10:40 am

1 stop38h 50m

$658

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 4/24

7:15 am-11:40 pm

2 stops26h 25m

Bangkok Suvarnabhumi

Mon 5/11

11:30 pm-10:40 am

1 stop25h 10m

$658

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 4/6

12:50 pm-11:40 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Mon 4/13

9:40 pm-2:55 pm

2 stops31h 15m

$664

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 4/13

7:15 am-1:15 pm

2 stops40h 00m

Bangkok Suvarnabhumi

Mon 4/20

9:40 pm-6:39 pm

2 stops34h 59m

$669

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/15

12:35 pm-12:45 am

1 stop22h 10m

Bangkok Suvarnabhumi

Tue 3/31

9:50 am-1:07 pm

1 stop17h 17m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 2/2

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

Thu 4/9

9:50 am-1:07 pm

1 stop17h 17m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 1/20

11:25 am-12:55 am

1 stop22h 30m

Bangkok Suvarnabhumi

Tue 3/17

2:05 am-2:20 pm

1 stop26h 15m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/8

12:35 pm-12:55 am

1 stop22h 20m

Bangkok Suvarnabhumi

Mon 3/16

2:05 am-2:20 pm

1 stop26h 15m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand 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 Thailand

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Thailand (average of $513). Flying from Seattle to Thailand in July is currently the most expensive (average of $689). 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 TH?

Find hourly flight availability from Seattle to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 31, 2025.

One of the essential ways to save on airfare from Seattle to Thailand is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Thailand. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Seattle to Thailand flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated December 31, 2025.
Read through reviews of airlines operating flights from Seattle to Thailand, such as STARLUX Airlines, EVA Air, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
STARLUX Airlines
8.9
Very good
252 reviews
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
EVA Air
8.5
Very good
1,304 reviews
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.2
Very good
797 reviews
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Asiana Airlines
8.2
Very good
502 reviews
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Singapore Airlines
8.1
Very good
1,424 reviews
STARLUX Airlines
8.9
Very good
252 reviews

Comfort

8.8

Boarding

8.9

Entertainment

8.8

Overall

8.9

Crew

9.1

Food

8.7

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

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

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Thailand from Seattle.

  • How long is the flight from Seattle to Thailand?

    For as low as $759, Korean Air can have you in Thailand from Seattle in 31h 25m. The distance between Seattle and Thailand is about 7860 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $280 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Philippine Airlines and Asiana Airlines, with prices starting from $298 and $348, respectively.

  • What are the most popular routes from Seattle to Thailand?

    While some choose either Seattle/Tacoma Intl - Bangkok Don Mueang Intl or Seattle/Tacoma Intl - Chiang Mai, Seattle/Tacoma Intl - Bangkok Suvarnabhumi is the most popular route from Seattle to Thailand.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Thailand (average of $513). Flying from Seattle to Thailand in July is currently the most expensive (average of $689). 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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Alternative routes for Seattle to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Seattle to Thailand

Discover the top 10 airlines that operate flights from Seattle to Thailand. 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 December 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$173Average$701FlexibilityNo cancel feeOn-time60%
DeltaCheapest$433Average$954FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$519Average$950FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$612Average$776FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$685Average$835FlexibilityNo cancel feeOn-time81%
ANACheapest$686Average$883FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$700Average$916FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$730Average$825FlexibilityNo cancel feeOn-time70%
Cathay PacificCheapest$735Average$880FlexibilityNo cancel feeOn-time72%
STARLUX AirlinesCheapest$740Average$858FlexibilityNo cancel feeOn-timeN/A

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