HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$426+ Cheap flights from Thailand to Seattle (SEA)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
ene. 9 — ene. 161
vie. 1/9
vie. 1/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Thailand to Seattle 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 Thailand to Seattle

Cheapest flights from Thailand to Seattle
Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 10, 2025.

This Bravofly deal was found by Cheapflights users on 12/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/251:20 pmBKK - SEA
1 stop20h 20mPhilippine Airlines
jue. 1/229:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 12/9$649
This FlightHub deal was found by Cheapflights users on 12/8. 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.
lun. 12/151:05 amBKK - SEA
1 stop21h 55mHainan Airlines
mar. 1/1310:00 amSEA - BKK
1 stop37h 20mHainan Airlines
Deal found 12/8$656
This oojo deal was found by Cheapflights users on 12/8. 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.
mié. 12/1711:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
mar. 1/139:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
Deal found 12/8$665
This IEagle deal was found by Cheapflights users on 12/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1711:10 amBKK - SEA
2 stops35h 55mHainan Airlines
mar. 1/1310:00 amSEA - BKK
1 stop22h 25mHainan Airlines
Deal found 12/8$675
This FlightHub deal was found by Cheapflights users on 12/8. 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.
jue. 12/1811:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
mar. 1/139:30 pmSEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 12/8$685
This Philippine Airlines deal was found by Cheapflights users on 12/8. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/1511:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
dom. 1/119:30 pmSEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 12/8$708
This Philippine Airlines deal was found by Cheapflights users on 12/8. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1811:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
mié. 1/149:30 pmSEA - BKK
1 stop34h 30mPhilippine Airlines
Deal found 12/8$718
This Bravofly deal was found by Cheapflights users on 12/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/251:20 pmBKK - SEA
1 stop20h 20mMultiple Airlines
jue. 1/2210:05 amSEA - BKK
2 stops33h 00mMultiple Airlines
Deal found 12/9$734
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
vie. 12/194:20 pmBKK - SEA
1 stop30h 40mHainan Airlines
mar. 1/1310:00 amSEA - BKK
1 stop22h 25mHainan Airlines
Deal found 12/8$760
This Agoda.com deal was found by Cheapflights users on 12/7. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/195:15 pmBKK - SEA
1 stop15h 55mEVA Air
sáb. 1/1011:30 pmSEA - BKK
1 stop20h 40mEVA Air
Deal found 12/7$779
This Expedia deal was found by Cheapflights users on 12/8. 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.
mié. 12/1711:10 amBKK - SEA
2 stops35h 55mMultiple Airlines
mar. 1/136:00 amSEA - BKK
2 stops32h 00mMultiple Airlines
Deal found 12/8$791
This FlightHub deal was found by Cheapflights users on 12/9. 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.
mié. 12/249:40 pmCNX - SEA
2 stops34h 50mEVA Air
lun. 12/2912:10 amSEA - CNX
1 stop19h 25mEVA Air
Deal found 12/9$833

Find flight deals from Thailand to Seattle

Keep the following information in mind while searching for Thailand to Seattle flight deals. Data was last updated diciembre 10, 2025.

Round-trip from

$632
(SmartFares)

One-way from

$426
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$793
From Thailand to Seattle/Tacoma Intl
Search Deals
One-way flight from Thailand to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($111 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 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 Thailand to Seattle 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 diciembre 10, 2025.
Use the filters below to find and compare flights from Thailand to Seattle that are best for you.

Fly from

Thailand

Fly to

Seattle

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

lun. 3/23

11:50 pm-7:40 pm

1 stop33h 50m

Seattle/Tacoma Intl

jue. 4/30

11:10 pm-10:40 pm

1 stop33h 30m

$708

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

jue. 3/26

1:20 pm-7:40 pm

1 stop20h 20m

Seattle/Tacoma Intl

mar. 4/14

11:10 pm-12:10 pm

1 stop23h 00m

$720

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

jue. 3/12

11:50 pm-7:40 pm

1 stop33h 50m

Seattle/Tacoma Intl

dom. 3/15

10:30 pm-5:50 pm

1 stop29h 20m

$727

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

lun. 6/1

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

mié. 9/16

8:35 am-11:55 pm

2 stops25h 20m

$788

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

lun. 6/1

9:35 am-8:48 pm

2 stops25h 13m

Seattle/Tacoma Intl

mar. 9/1

6:30 am-11:55 pm

2 stops27h 25m

$799

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

mar. 4/14

3:40 pm-7:38 pm

2 stops41h 58m

Seattle/Tacoma Intl

dom. 7/12

4:30 pm-4:35 am

1 stop22h 05m

$802

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

mié. 5/6

3:40 pm-7:45 pm

2 stops42h 05m

Seattle/Tacoma Intl

mié. 5/13

5:45 pm-4:35 am

2 stops44h 50m

$802

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

mar. 1/27

4:55 pm-9:12 pm

3 stops43h 17m

Seattle/Tacoma Intl

dom. 2/8

6:18 am-5:10 am

2 stops31h 52m

$802

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

jue. 3/26

11:50 am-7:10 pm

1 stop21h 20m

Seattle/Tacoma Intl

mié. 4/29

1:30 am-10:25 am

1 stop18h 55m

$804

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

jue. 4/16

9:40 pm-2:00 pm

1 stop30h 20m

Seattle/Tacoma Intl

dom. 7/12

12:45 pm-9:45 pm

1 stop19h 00m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 56 results
1
2
3
...
6

Best time to book a flight from Thailand to Seattle

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

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

Currently, June is the cheapest month in which you can book a flight from Thailand to Seattle (average of $624). Flying from Thailand to Seattle in July is currently the most expensive (average of $800). 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 TH to SEA?

Find hourly flight availability from Thailand to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 10, 2025.

It’s optimal to fly from Thailand to Seattle at noon. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Thailand to Seattle. Price data was last updated on December 16, 2024.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated diciembre 10, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air, and Korean Air from Thailand to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

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
243 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

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
1,296 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Korean Air
8.4
Very good
1,184 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Delta
7.9
Good
8,007 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
Philippine Airlines
7.3
Good
941 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Crew

9.2

Boarding

8.9

Food

8.7

Entertainment

8.9

Comfort

8.9

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 Thailand to Seattle. 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 into for flights to Seattle from Thailand?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Thailand to Seattle.

  • How long is the flight from Thailand to Seattle?

    Philippine Airlines, United Airlines, and EVA Air can get you from Thailand to Seattle in just under 18h 50m. Your travel time can differ by up to 15h. Airlines will cover a distance of 7443 mi. This flight may include one or multiple stops.

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

    $387 is the cheapest one-way deal found within the past few days, from Philippine Airlines. You may also be able to find cheap deals on Singapore Airlines and STARLUX Airlines, with prices starting from $399 and $450, respectively.

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

    Most travelers choose Bangkok Suvarnabhumi - Seattle/Tacoma Intl, Bangkok Don Mueang Intl - Seattle/Tacoma Intl or Chiang Mai - Seattle/Tacoma Intl when deciding on the best route from Thailand to Seattle.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Thailand to Seattle (average of $624). Flying from Thailand to Seattle in July is currently the most expensive (average of $800). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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 Thailand to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Seattle flights
Mumbai to Seattle flights
Suvarnabhumi to Seattle flights
New Delhi to Seattle flights
Narita to Seattle flights
Taiwan Taoyuan Intl to Seattle flights
Haneda to Seattle flights
Hyderabad to Seattle flights
Beijing Daxing Intl to Seattle flights
Capital to Seattle flights
Chennai to Seattle flights
Bangalore to Seattle flights
Hongqiao Intl to Seattle flights
Pu Dong to Seattle flights
Hong Kong to Seattle flights
Incheon Intl to Portland flights
Narita to Portland flights
Haneda to Portland flights
Manila to Seattle flights
Ho Chi Minh City to Seattle flights
Singapore to Seattle flights
Suvarnabhumi to Portland flights
Kolkata to Seattle flights
Kansai Intl to Seattle flights
Cebu City to Seattle flights
Osaka Itami to Seattle flights
Udaipur to Portland flights
Kuala Lumpur Intl to Seattle flights
Busan to Seattle flights
Chiang Mai to Portland flights
Ahmedabad to Seattle flights
Okinawa to Seattle flights
Visakhapatnam to Seattle flights
Cochin to Seattle flights
Ho Chi Minh City to Portland flights
Soekarno-Hatta Intl to Seattle flights
New Delhi to Portland flights
Hanoi to Seattle flights
Denpasar to Seattle flights
Lahore to Seattle flights
Gimpo Intl to Portland flights
Hong Kong to Portland flights
Guangzhou to Seattle flights
Iwakuni to Seattle flights
Karachi to Seattle flights
Nagpur to Seattle flights

Top 8 airlines flying from Thailand to Seattle

Discover the top 8 airlines that operate flights from Thailand to Seattle. 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 diciembre 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$624Average$654FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$651Average$873FlexibilityNo cancel feeOn-time76%
STARLUX AirlinesCheapest$705Average$825FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$766Average$941FlexibilityNo cancel feeOn-time74%
ANACheapest$781Average$1,066FlexibilityNo cancel feeOn-time80%
China AirlinesCheapest$781Average$856FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$801Average$899FlexibilityNo cancel feeOn-time81%
DeltaCheapest$829Average$926FlexibilityNo cancel feeOn-timeN/A

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.