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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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
ene. 7 — ene. 141
mié. 1/7
mié. 1/14
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 diciembre 8, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/303:40 pmSEA - BKK
1 stop33h 40mANA
mié. 1/142:25 pmBKK - SEA
1 stop37h 55mANA
Deal found 12/7$710
This FlightHub deal was found by Cheapflights users on 12/6. 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.
mar. 12/3012:10 amSEA - HKT
1 stop30h 25mAsiana Airlines
sáb. 2/2810:55 pmHKT - SEA
1 stop30h 00mAsiana Airlines
Deal found 12/6$713
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/303:40 pmSEA - BKK
1 stop33h 40mANA
jue. 1/157:10 amBKK - SEA
1 stop21h 10mANA
Deal found 12/7$719
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/303:40 pmSEA - BKK
1 stop33h 40mANA
sáb. 1/1710:25 pmBKK - SEA
1 stop29h 55mANA
Deal found 12/7$738
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/303:40 pmSEA - BKK
1 stop33h 40mANA
vie. 1/169:10 amBKK - SEA
1 stop19h 10mANA
Deal found 12/7$750
This Ovago deal was found by Cheapflights users on 12/6. 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.
mar. 12/303:40 pmSEA - BKK
1 stop33h 40mANA
vie. 1/309:10 amBKK - SEA
2 stops27h 02mANA
Deal found 12/6$783
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/313:45 pmSEA - BKK
1 stop23h 45mANA
mié. 1/142:25 pmBKK - SEA
1 stop37h 55mANA
Deal found 12/7$785
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/313:45 pmSEA - BKK
1 stop23h 45mANA
lun. 1/267:10 amBKK - SEA
2 stops23h 34mANA
Deal found 12/7$792
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/313:45 pmSEA - BKK
1 stop23h 45mANA
jue. 1/157:10 amBKK - SEA
1 stop21h 10mANA
Deal found 12/7$794
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3012:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
vie. 1/1611:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 12/7$806
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/313:45 pmSEA - BKK
1 stop23h 45mANA
dom. 1/189:10 amBKK - SEA
1 stop19h 10mANA
Deal found 12/7$813
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:05 amSEA - BKK
2 stops37h 20mUnited Airlines
lun. 1/267:10 amBKK - SEA
2 stops32h 46mUnited Airlines
Deal found 12/7$927

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 diciembre 8, 2025.

Round-trip from

$582
(FlightHub)

One-way from

$278
(FlightHub)

Popular in

June

Cheapest in

September

Average price

$1,227
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. 15% potential increase in price ($159 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 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 diciembre 8, 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 - BKK

SEABKK

Seattle/Tacoma Intl

dom. 1/25

9:00 am-5:10 am

2 stops29h 10m

Bangkok Suvarnabhumi

lun. 2/2

4:55 pm-7:55 pm

2 stops42h 00m

$733

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 1/28

9:00 am-5:10 am

2 stops29h 10m

Bangkok Suvarnabhumi

jue. 3/5

4:55 pm-12:59 am

2 stops23h 04m

$735

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 1/31

5:12 pm-12:20 am

2 stops40h 08m

Bangkok Suvarnabhumi

mié. 2/11

4:55 pm-12:52 am

2 stops22h 57m

$744

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 2/7

12:35 pm-11:25 am

2 stops55h 50m

Bangkok Suvarnabhumi

jue. 2/12

4:55 pm-11:30 pm

2 stops21h 35m

$749

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

jue. 2/19

7:15 am-11:25 am

2 stops37h 10m

Bangkok Suvarnabhumi

sáb. 3/14

4:55 pm-12:59 am

2 stops46h 04m

$749

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 1/28

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

mié. 2/4

9:30 pm-9:00 am

1 stop26h 30m

$760

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 3/7

12:10 am-11:15 am

1 stop20h 05m

Bangkok Suvarnabhumi

sáb. 3/21

12:20 pm-2:55 pm

1 stop16h 35m

$760

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 2/9

7:15 am-11:20 pm

2 stops25h 05m

Bangkok Suvarnabhumi

mar. 2/24

9:40 am-9:00 am

1 stop38h 20m

$765

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 2/17

5:59 pm-12:45 am

2 stops39h 46m

Bangkok Suvarnabhumi

mié. 2/25

12:55 am-9:00 am

1 stop23h 05m

$765

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 2/1

8:10 pm-12:45 am

2 stops37h 35m

Bangkok Suvarnabhumi

mié. 2/11

2:05 am-9:00 am

1 stop21h 55m

$765

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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 April is currently the most expensive (average of $690). 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 diciembre 8, 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 diciembre 8, 2025.
Read through reviews of airlines operating flights from Seattle to Thailand, such as EVA Air, ANA, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
EVA Air
8.5
Very good
1,296 reviews
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
ANA
8.4
Very good
1,020 reviews
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
China Airlines
8.2
Very good
788 reviews
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Asiana Airlines
8.2
Very good
490 reviews
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Singapore Airlines
8.1
Very good
1,411 reviews
EVA Air
8.5
Very good
1,296 reviews

Boarding

8.4

Crew

8.6

Overall

8.5

Entertainment

8.0

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

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 $778, United Airlines can have you in Thailand from Seattle in 19h 40m. 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?

    $282 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 - 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, 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 April is currently the most expensive (average of $690). 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 diciembre 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$963FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$520Average$950FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$605Average$708FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$612Average$755FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$679Average$834FlexibilityNo cancel feeOn-time81%
ANACheapest$695Average$890FlexibilityNo cancel feeOn-time80%
China AirlinesCheapest$730Average$826FlexibilityNo cancel feeOn-time70%
Cathay PacificCheapest$735Average$798FlexibilityNo cancel feeOn-time72%
STARLUX AirlinesCheapest$740Average$856FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$753Average$902FlexibilityNo cancel feeOn-time69%

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