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$386+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Seattle to Thailand

Keep the following information in mind while searching for Seattle to Thailand flight deals. Data was last updated March 28, 2025.

Round-trip from

$598
(Justfly.com)

One-way from

$386
(Gurufare)

Popular in

December

Cheapest in

February

Average price

$832
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. 2% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 March 28, 2025.

This Justfly.com deal was found by Cheapflights users on 3/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:15 amSEA - HKT
1 stop40h 55mSingapore Airlines
Fri 10/3111:05 amHKT - SEA
1 stop35h 05mSingapore Airlines
Deal found 3/28$598
This Gurufare deal was found by Cheapflights users on 3/27. 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.
Sat 10/1110:15 amSEA - BKK
1 stop19h 45mSingapore Airlines
Sat 10/256:30 pmBKK - SEA
1 stop27h 40mSingapore Airlines
Deal found 3/27$769
This oojo deal was found by Cheapflights users on 3/27. 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.
Tue 5/131:10 amSEA - BKK
1 stop18h 35mChina Airlines
Thu 6/55:30 pmBKK - SEA
1 stop16h 00mChina Airlines
Deal found 3/27$770
This Gurufare deal was found by Cheapflights users on 3/27. 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 4/242:15 pmSEA - BKK
1 stop18h 55mAsiana Airlines
Thu 5/221:20 amBKK - SEA
1 stop25h 10mAsiana Airlines
Deal found 3/27$779
This Korean Air deal was found by Cheapflights users on 3/27. 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.
Sun 4/2012:50 pmSEA - BKK
1 stop20h 50mKorean Air
Sat 5/249:40 pmBKK - SEA
1 stop27h 00mKorean Air
Deal found 3/27$780
This FlightHub deal was found by Cheapflights users on 3/27. 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 8/311:40 amSEA - CNX
1 stop18h 40mChina Airlines
Tue 9/1611:20 amCNX - SEA
1 stop22h 00mChina Airlines
Deal found 3/27$783
This Trip.com deal was found by Cheapflights users on 3/27. 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.
Wed 5/1411:35 pmSEA - BKK
1 stop28h 05mPhilippine Airlines
Thu 6/56:40 pmBKK - SEA
1 stop38h 35mPhilippine Airlines
Deal found 3/27$785
This Gotogate deal was found by Cheapflights users on 3/27. 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.
Thu 11/610:35 amSEA - BKK
2 stops27h 35mMultiple Airlines
Thu 11/207:10 amBKK - SEA
2 stops26h 15mMultiple Airlines
Deal found 3/27$807
This CrystalTravel deal was found by Cheapflights users on 3/27. 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.
Tue 9/3012:30 amSEA - BKK
1 stop20h 40mEVA Air
Wed 10/84:45 pmBKK - SEA
1 stop16h 45mEVA Air
Deal found 3/27$820
This CheapTickets.de deal was found by Cheapflights users on 3/28. 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 CheapTickets.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/111:10 amSEA - HKT
2 stops22h 45mMultiple Airlines
Mon 5/1910:15 amHKT - SEA
2 stops23h 15mMultiple Airlines
Deal found 3/28$823
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/131:45 pmSEA - BKK
2 stops26h 15mANA
Tue 9/29:35 amBKK - SEA
2 stops23h 01mANA
Deal found 3/27$827
This oojo deal was found by Cheapflights users on 3/27. 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.
Wed 9/174:30 pmSEA - BKK
1 stop30h 55mQatar Airways
Tue 10/72:30 amBKK - SEA
1 stop24h 15mQatar Airways
Deal found 3/27$831

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 March 28, 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

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 9/2

10:15 am-5:10 pm

1 stop40h 55m

Phuket City

Fri 10/31

11:05 am-8:10 am

1 stop35h 05m

$598

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 5/13

1:10 am-9:45 am

1 stop18h 35m

Bangkok Suvarnabhumi

Thu 6/5

5:30 pm-7:30 pm

1 stop16h 00m

$770

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 4/24

2:15 pm-11:10 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Thu 5/22

1:20 am-12:30 pm

1 stop25h 10m

$779

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/20

12:50 pm-11:40 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Sat 5/24

9:40 pm-10:40 am

1 stop27h 00m

$780

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/31

1:40 am-10:20 am

1 stop18h 40m

Chiang Mai

Tue 9/16

11:20 am-7:20 pm

1 stop22h 00m

$783

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 5/14

11:35 pm-5:40 pm

1 stop28h 05m

Bangkok Suvarnabhumi

Thu 6/5

6:40 pm-7:15 pm

1 stop38h 35m

$785

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 8/29

10:15 am-11:00 am

1 stop34h 45m

Bangkok Suvarnabhumi

Sun 9/28

12:15 pm-11:59 pm

2 stops25h 44m

$812

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 8/29

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Sun 9/28

1:30 pm-7:15 pm

1 stop19h 45m

$822

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sun 5/11

1:10 am-1:55 pm

2 stops22h 45m

Phuket City

Mon 5/19

10:15 am-7:30 pm

2 stops23h 15m

$823

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 8/13

1:45 pm-6:00 am

2 stops26h 15m

Bangkok Suvarnabhumi

Tue 9/2

9:35 am-6:36 pm

2 stops23h 01m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $963). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,574). 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 March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Thailand as you normally would.

Rainfall in Thailand by month

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

In terms of precipitation, rainfall in Thailand 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 Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

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

If weather is an important factor for your trip to Thailand, 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 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 March 28, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air from Seattle to Thailand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
146 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
EVA Air
8.4
Very good
1,169 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,050 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
ANA
8.3
Very good
829 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Overall

9.1

Crew

9.3

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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.

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

    $386 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 China Airlines and STARLUX Airlines, with prices starting from $415 and $461, respectively.

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

    While some choose either Seattle/Tacoma Intl - Phuket City 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, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $963). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,574). 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 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$588Average$1,151FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$619Average$883FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$634Average$821FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$696Average$1,075FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$710Average$761FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$749Average$843FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
ANACheapest$760Average$935FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,077FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$786Average$950FlexibilityNo cancel feeOn-time69%
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