HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Thailand

$343+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Thailand with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 3, 2025.

Round-trip from

$615
(FlightHub)

One-way from

$343
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$1,066
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 ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/3. 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 stop19h 05mSingapore Airlines
Fri 10/318:40 amHKT - SEA
1 stop37h 30mSingapore Airlines
Deal found 7/3$615
This Flightnetwork deal was found by Cheapflights users on 7/1. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:30 pmSEA - CNX
1 stop19h 10mAsiana Airlines
Tue 9/212:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 7/1$679
This Ovago deal was found by Cheapflights users on 7/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:30 pmSEA - CNX
2 stops26h 15mMultiple Airlines
Tue 9/168:00 pmCNX - SEA
2 stops32h 25mMultiple Airlines
Deal found 7/2$693
This Travelocity deal was found by Cheapflights users on 7/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/94:30 pmSEA - HKT
2 stops27h 05mMultiple Airlines
Wed 7/169:20 pmHKT - SEA
2 stops31h 05mMultiple Airlines
Deal found 7/1$696
This Korean Air deal was found by Cheapflights users on 7/3. 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.
Thu 8/211:20 pmSEA - BKK
1 stop18h 25mKorean Air
Thu 8/289:50 amBKK - SEA
2 stops26h 35mKorean Air
Deal found 7/3$710
This KAYAK deal was found by Cheapflights users on 7/2. 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.
Thu 9/184:30 pmSEA - BKK
1 stop22h 05mANA
Wed 10/87:00 amBKK - SEA
2 stops23h 24mANA
Deal found 7/2$714
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Fri 8/295:35 pmSEA - BKK
2 stops45h 00mUnited Airlines
Thu 9/119:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 7/3$718
This Gurufare deal was found by Cheapflights users on 7/3. 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.
Sun 8/311:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Thu 11/204:55 pmCNX - SEA
1 stop37h 10mSTARLUX Airlines
Deal found 7/3$720
This Asiana Airlines deal was found by Cheapflights users on 7/3. 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.
Sun 9/142:15 pmSEA - BKK
1 stop18h 55mAsiana Airlines
Sun 9/2811:55 amBKK - SEA
1 stop38h 35mAsiana Airlines
Deal found 7/3$724
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 8/2912:55 pmSEA - BKK
1 stop22h 10mDelta
Mon 9/82:35 amBKK - SEA
1 stop25h 05mDelta
Deal found 7/3$736
This Gurufare deal was found by Cheapflights users on 7/3. 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 8/221:15 amSEA - BKK
1 stop20h 45mSTARLUX Airlines
Sat 8/301:10 pmBKK - SEA
1 stop17h 25mSTARLUX Airlines
Deal found 7/3$749
This oojo deal was found by Cheapflights users on 7/3. 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 11/312:10 amSEA - BKK
1 stop34h 25mChina Airlines
Mon 11/172:35 amBKK - SEA
1 stop30h 40mChina Airlines
Deal found 7/3$750

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 July 3, 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-7:20 pm

1 stop19h 05m

Phuket City

Fri 10/31

8:40 am-8:10 am

1 stop37h 30m

$615

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 8/18

2:30 pm-11:40 pm

1 stop19h 10m

Chiang Mai

Tue 9/2

12:45 am-12:30 pm

1 stop25h 45m

$679

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/1

4:30 pm-8:45 am

2 stops26h 15m

Chiang Mai

Tue 9/16

8:00 pm-2:25 pm

2 stops32h 25m

$693

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 8/26

4:30 pm-9:00 am

2 stops26h 30m

Phuket City

Tue 9/2

9:20 pm-2:25 pm

2 stops31h 05m

$696

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 8/21

1:20 pm-9:45 pm

1 stop18h 25m

Bangkok Suvarnabhumi

Thu 8/28

9:50 am-10:25 pm

2 stops26h 35m

$710

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/18

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 10/8

7:00 am-4:24 pm

2 stops23h 24m

$714

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 8/29

5:35 pm-4:35 am

2 stops45h 00m

Bangkok Suvarnabhumi

Thu 9/11

9:35 am-2:25 pm

1 stop18h 50m

$718

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/31

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 11/20

4:55 pm-3:05 pm

1 stop37h 10m

$720

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 9/14

2:15 pm-11:10 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Sun 9/28

11:55 am-12:30 pm

1 stop38h 35m

$724

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 8/29

12:55 pm-1:15 pm

1 stop34h 20m

Bangkok Suvarnabhumi

Sun 9/7

11:30 pm-1:40 pm

1 stop28h 10m

$736

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 51 results
1
2
3
...
6

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 $952). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,573). 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 July 3, 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.

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 July 3, 2025.
Read through reviews of airlines operating flights from Seattle to Thailand, such as STARLUX Airlines, EVA Air, and Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
189 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,215 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,101 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
ANA
8.4
Very good
893 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,505 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Entertainment

9.0

Boarding

9.0

Food

8.9

Overall

9.1

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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?

    $343 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 Asiana Airlines and Korean Air, with prices starting from $369 and $370, 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, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $952). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,573). 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.
Seattle to Narita flights
Seattle to Haneda flights
Seattle to Suvarnabhumi flights
Seattle to Incheon Intl flights
Seattle to Manila flights
Seattle to Taiwan Taoyuan Intl flights
Seattle to Soekarno-Hatta Intl flights
Portland to Narita flights
Portland to Haneda flights
Seattle to New Delhi flights
Seattle to Singapore flights
Seattle to Hongqiao Intl flights
Seattle to Ho Chi Minh City flights
Seattle to Pu Dong flights
Seattle to Cebu City flights
Seattle to Sung Shan flights
Seattle to Gimpo Intl flights
Seattle to Bangalore flights
Seattle to Mumbai flights
Portland to Suvarnabhumi flights
Seattle to Hyderabad flights
Seattle to Kansai Intl flights
Seattle to Denpasar flights
Seattle to Hong Kong flights
Seattle to Capital flights
Seattle to Davao City flights
Seattle to Itami flights
Portland to Incheon Intl flights
Seattle to Chitose flights
Seattle to Kobe flights
Portland to Ho Chi Minh City flights
Portland to Hong Kong flights
Seattle to Don Mueang Intl flights
Seattle to Kuala Lumpur Intl flights
Portland to Manila flights
Seattle to Beijing Daxing Intl flights
Seattle to Chennai flights
Portland to Taiwan Taoyuan Intl flights
Seattle to Hanoi flights
Portland to Kansai Intl flights
Seattle to Angeles City flights
Seattle to Chiang Mai flights
Seattle to Ahmedabad flights
Seattle to Phnom Penh flights
Seattle to Phuket City flights
Seattle to Kathmandu flights
Seattle to Da Nang flights
Seattle to Colombo flights
Spokane to Suvarnabhumi flights
Seattle to Okinawa flights

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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$1,086FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$600Average$984FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$633Average$811FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$695Average$932FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$708Average$755FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$736Average$862FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$739Average$885FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$755Average$877FlexibilityNo cancel feeOn-time62%
ANACheapest$759Average$917FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,079FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.