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$428+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$623
(FlightHub)

One-way from

$430
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,070
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. 5% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:15 amSEA - HKT
1 stop32h 50mSingapore Airlines
Fri 10/3110:05 amHKT - SEA
1 stop36h 05mSingapore Airlines
Deal found 4/29$618
This oojo deal was found by Cheapflights users on 4/30. 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.
Mon 9/12:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
Mon 9/1512:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 4/30$726
This FlightHub deal was found by Cheapflights users on 4/30. 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 8/311:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Tue 11/185:15 pmCNX - SEA
1 stop36h 50mSTARLUX Airlines
Deal found 4/30$762
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Fri 9/121:15 amSEA - BKK
1 stop20h 45mSTARLUX Airlines
Sun 9/215:50 pmBKK - SEA
1 stop36h 20mSTARLUX Airlines
Deal found 4/30$784
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1412:50 pmSEA - BKK
1 stop18h 55mKorean Air
Thu 8/289:50 amBKK - SEA
2 stops25h 56mKorean Air
Deal found 4/30$785
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 9/86:45 amSEA - BKK
2 stops31h 50mUnited Airlines
Mon 9/299:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 4/30$789
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:45 pmSEA - BKK
2 stops26h 15mANA
Wed 4/17:00 amBKK - SEA
1 stop21h 25mANA
Deal found 4/29$794
This Gurufare deal was found by Cheapflights users on 4/30. 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.
Fri 5/97:20 amSEA - BKK
2 stops27h 20mChina Eastern
Sat 5/175:05 amBKK - SEA
2 stops25h 40mChina Eastern
Deal found 4/30$796
This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:45 amSEA - BKK
2 stops27h 10mMultiple Airlines
Tue 9/309:35 amBKK - SEA
2 stops23h 01mMultiple Airlines
Deal found 4/30$800
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/103:40 pmSEA - HKT
2 stops26h 55mMultiple Airlines
Mon 11/249:50 pmHKT - SEA
2 stops30h 30mMultiple Airlines
Deal found 4/30$817
This Orbitz deal was found by Cheapflights users on 4/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/24:30 pmSEA - CNX
2 stops29h 10mMultiple Airlines
Mon 11/177:45 pmCNX - SEA
2 stops32h 35mMultiple Airlines
Deal found 4/30$817
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 5/1112:40 pmSEA - BKK
1 stop21h 00mDelta
Wed 6/411:30 pmBKK - SEA
1 stop28h 10mDelta
Deal found 4/30$818

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 May 1, 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-9:05 am

1 stop32h 50m

Phuket City

Fri 10/31

10:05 am-8:10 am

1 stop36h 05m

$618

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 5/14

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Thu 8/28

9:50 am-9:46 pm

2 stops25h 56m

$785

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 5/9

7:20 am-12:40 am

2 stops27h 20m

Bangkok Suvarnabhumi

Sat 5/17

5:05 am-4:45 pm

2 stops25h 40m

$796

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 5/4

1:15 am-4:40 pm

1 stop25h 25m

Bangkok Suvarnabhumi

Sun 5/11

5:50 pm-4:10 pm

1 stop36h 20m

$798

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 7/8

1:45 pm-6:00 am

2 stops26h 15m

Bangkok Suvarnabhumi

Tue 9/9

9:35 pm-2:25 pm

1 stop30h 50m

$812

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 7/15

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Thu 9/4

9:35 am-2:25 pm

1 stop18h 50m

$813

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 5/11

12:40 pm-11:40 pm

1 stop21h 00m

Bangkok Suvarnabhumi

Wed 6/4

11:30 pm-1:40 pm

1 stop28h 10m

$818

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 5/5

2:15 pm-11:10 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Sat 5/10

1:20 am-12:30 pm

1 stop25h 10m

$823

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 5/3

2:15 pm-11:40 pm

1 stop19h 25m

Chiang Mai

Fri 5/23

12:45 am-12:30 pm

1 stop25h 45m

$859

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 5/7

7:00 am-11:55 pm

2 stops26h 55m

Bangkok Suvarnabhumi

Tue 5/20

7:00 am-6:30 pm

3 stops25h 30m

$866

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $955). 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 May 1, 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 May 1, 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
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,459 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Overall

9.1

Entertainment

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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?

    $430 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on Asiana Airlines and Qatar Airways, with prices starting from $440 and $441, respectively.

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

    While some choose either Seattle/Tacoma Intl - Chiang Mai or Seattle/Tacoma Intl - Bangkok Don Mueang Intl, 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 $955). 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

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$441Average$1,113FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$623Average$873FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$631Average$816FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$695Average$995FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$710Average$757FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$736Average$839FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
ANACheapest$759Average$926FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,101FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$786Average$936FlexibilityNo cancel feeOn-time69%

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