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$278+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
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 23, 2025.

This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:10 amSEA - HKT
1 stop30h 25mAsiana Airlines
Sun 11/2910:55 pmHKT - SEA
1 stop30h 00mAsiana Airlines
Deal found 12/21$713
This Gotogate deal was found by Cheapflights users on 12/21. 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.
Tue 12/3012:10 amSEA - HKT
1 stop30h 25mMultiple Airlines
Sun 11/297:50 pmHKT - SEA
2 stops29h 01mMultiple Airlines
Deal found 12/21$923
This oojo deal was found by Cheapflights users on 12/22. 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.
Sun 12/2812:10 amSEA - BKK
1 stop21h 55mChina Airlines
Tue 3/310:55 amBKK - SEA
1 stop22h 15mChina Airlines
Deal found 12/22$958
This oojo deal was found by Cheapflights users on 12/21. 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 12/2812:10 amSEA - BKK
1 stop20h 00mEVA Air
Tue 3/312:45 pmBKK - SEA
1 stop20h 25mEVA Air
Deal found 12/21$966
This KAYAK deal was found by Cheapflights users on 12/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:40 pmSEA - BKK
1 stop23h 50mANA
Thu 1/1510:25 pmBKK - SEA
1 stop29h 55mANA
Deal found 12/23$991
This oojo deal was found by Cheapflights users on 12/22. 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.
Sat 12/2712:10 amSEA - BKK
1 stop21h 55mChina Airlines
Sat 2/282:05 pmBKK - SEA
1 stop19h 05mChina Airlines
Deal found 12/22$997
This Asiana Airlines deal was found by Cheapflights users on 12/23. 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.
Mon 12/2912:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
Tue 1/1311:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 12/23$1,000
This KAYAK deal was found by Cheapflights users on 12/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:40 pmSEA - BKK
1 stop41h 40mANA
Thu 1/152:25 pmBKK - SEA
1 stop37h 55mANA
Deal found 12/23$1,001
This Kiwi.com deal was found by Cheapflights users on 12/23. 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 12/3012:10 amSEA - BKK
1 stop20h 00mEVA Air
Thu 1/155:15 pmBKK - SEA
1 stop15h 55mEVA Air
Deal found 12/23$1,009
This oojo deal was found by Cheapflights users on 12/23. 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.
Sat 12/2712:10 amSEA - BKK
1 stop18h 40mChina Airlines
Mon 1/125:50 pmBKK - SEA
1 stop15h 20mChina Airlines
Deal found 12/23$1,015
This FlightHub deal was found by Cheapflights users on 12/23. 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.
Sat 12/2712:10 amSEA - BKK
1 stop21h 55mChina Airlines
Tue 1/135:50 pmBKK - SEA
1 stop15h 20mChina Airlines
Deal found 12/23$1,022
This Kiwi.com deal was found by Cheapflights users on 12/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
Thu 12/2511:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
Deal found 12/22$1,036

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 23, 2025.

Round-trip from

$594
(FlightHub)

One-way from

$278
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,244
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 ($58 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 23, 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 - DMK

SEADMK

Seattle/Tacoma Intl

Tue 1/20

9:55 am-10:05 pm

2 stops21h 10m

Bangkok Don Mueang Intl

Tue 1/27

8:45 am-10:06 pm

2 stops28h 21m

$670

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 2/2

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

Thu 2/12

9:40 am-1:20 pm

1 stop18h 40m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 1/24

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

Mon 2/2

9:40 am-1:20 pm

1 stop18h 40m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

11:30 am-11:20 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Wed 3/25

12:55 am-2:20 pm

1 stop27h 25m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 1/31

11:25 am-12:55 am

1 stop22h 30m

Bangkok Suvarnabhumi

Tue 2/10

9:30 pm-1:20 pm

1 stop30h 50m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 1/27

11:25 am-12:55 am

1 stop22h 30m

Bangkok Suvarnabhumi

Sun 2/8

2:05 am-1:20 pm

1 stop26h 15m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 3/10

12:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Mon 3/23

9:30 pm-2:20 pm

1 stop30h 50m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 2/1

11:00 am-9:30 pm

1 stop19h 30m

Bangkok Suvarnabhumi

Mon 2/16

2:05 am-9:00 am

1 stop21h 55m

$692

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 3/12

12:00 pm-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

Fri 3/20

2:05 am-10:00 am

1 stop21h 55m

$692

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 3/6

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

Thu 3/12

12:55 am-10:00 am

1 stop23h 05m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

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 23, 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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 14% 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 December 16, 2024.

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 23, 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
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

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
248 reviews
STARLUX Airlines
8.9
Very good
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

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
1,299 reviews
STARLUX Airlines
8.9
Very good
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.3
Very good
792 reviews
STARLUX Airlines
8.9
Very good
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

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
499 reviews
STARLUX Airlines
8.9
Very good
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

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
1,419 reviews
STARLUX Airlines
8.9
Very good
248 reviews

Overall

8.9

Crew

9.1

Entertainment

8.8

Food

8.7

Boarding

8.9

Comfort

8.8

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 $752, Delta can have you in Thailand from Seattle in 19h 20m. 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 - Phuket City, 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$964FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$520Average$948FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$605Average$704FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$611Average$775FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$685Average$835FlexibilityNo cancel feeOn-time81%
ANACheapest$693Average$888FlexibilityNo cancel feeOn-time80%
China AirlinesCheapest$730Average$825FlexibilityNo cancel feeOn-time70%
Cathay PacificCheapest$735Average$880FlexibilityNo cancel feeOn-time72%
STARLUX AirlinesCheapest$740Average$857FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$753Average$925FlexibilityNo cancel feeOn-time69%

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