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$374+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$592
(FlightHub)

One-way from

$374
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,195
From Seattle/Tacoma Intl to Thailand
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One-way flight from Seattle/Tacoma Intl to Thailand
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Highest demand for flights based on searches. 6% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/11. 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. 9/210:15 amSEA - HKT
1 stop19h 05mSingapore Airlines
vie. 10/318:40 amHKT - SEA
1 stop37h 30mSingapore Airlines
Deal found 6/11$592
This oojo deal was found by Cheapflights users on 6/12. 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.
lun. 9/12:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
lun. 9/1512:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 6/12$679
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/75:30 amSEA - HKT
2 stops27h 15mMultiple Airlines
dom. 9/2111:15 amHKT - SEA
2 stops21h 21mMultiple Airlines
Deal found 6/10$740
This FlightHub deal was found by Cheapflights users on 6/11. 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.
dom. 8/311:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
mar. 9/165:20 pmCNX - SEA
1 stop36h 50mSTARLUX Airlines
Deal found 6/11$766
This STARLUX Airlines deal was found by Cheapflights users on 6/12. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/1411:45 pmSEA - BKK
1 stop25h 45mSTARLUX Airlines
lun. 12/81:45 pmBKK - SEA
1 stop16h 20mSTARLUX Airlines
Deal found 6/12$768
This FlightHub deal was found by Cheapflights users on 6/11. 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. 8/288:08 amSEA - BKK
2 stops24h 52mJapan Airlines
jue. 9/118:05 amBKK - SEA
2 stops20h 49mJapan Airlines
Deal found 6/11$772
This oojo deal was found by Cheapflights users on 6/12. 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.
sáb. 9/132:15 pmSEA - BKK
1 stop18h 55mAsiana Airlines
sáb. 9/201:20 amBKK - SEA
1 stop25h 10mAsiana Airlines
Deal found 6/12$774
This Gotogate deal was found by Cheapflights users on 6/11. 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.
mar. 8/2610:00 amSEA - BKK
2 stops28h 35mANA
lun. 9/19:35 pmBKK - SEA
1 stop30h 50mANA
Deal found 6/11$780
This Korean Air deal was found by Cheapflights users on 6/10. 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.
mié. 11/1211:00 amSEA - BKK
1 stop19h 30mKorean Air
dom. 12/71:00 amBKK - SEA
1 stop23h 00mKorean Air
Deal found 6/10$783
This oojo deal was found by Cheapflights users on 6/12. 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.
mar. 8/121:40 amSEA - BKK
1 stop18h 05mChina Airlines
dom. 8/312:40 amBKK - SEA
1 stop31h 05mChina Airlines
Deal found 6/12$784
This United Airlines deal was found by Cheapflights users on 6/10. 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. 8/134:30 pmSEA - BKK
1 stop22h 05mUnited Airlines
jue. 9/49:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 6/10$785
This Trip.com deal was found by Cheapflights users on 6/11. 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.
lun. 11/1012:10 amSEA - CNX
1 stop19h 15mChina Airlines
mar. 11/2511:25 amCNX - SEA
1 stop21h 50mChina Airlines
Deal found 6/11$796

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 junio 12, 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

mar. 9/2

10:15 am-7:20 pm

1 stop19h 05m

Phuket City

vie. 10/31

8:40 am-8:10 am

1 stop37h 30m

$592

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

lun. 9/1

2:15 pm-11:40 pm

1 stop19h 25m

Chiang Mai

lun. 9/15

12:45 am-12:30 pm

1 stop25h 45m

$679

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

dom. 9/7

5:30 am-10:45 pm

2 stops27h 15m

Phuket City

dom. 9/21

11:15 am-6:36 pm

2 stops21h 21m

$740

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

dom. 8/31

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

mar. 9/16

5:20 pm-4:10 pm

1 stop36h 50m

$766

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

vie. 11/14

11:45 pm-4:30 pm

1 stop25h 45m

Bangkok Suvarnabhumi

jue. 12/11

1:45 pm-3:05 pm

1 stop16h 20m

$768

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

jue. 8/28

8:08 am-11:00 pm

2 stops24h 52m

Bangkok Suvarnabhumi

jue. 9/11

8:05 am-2:54 pm

2 stops20h 49m

$772

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 9/13

2:15 pm-11:10 pm

1 stop18h 55m

Bangkok Suvarnabhumi

sáb. 9/20

1:20 am-12:30 pm

1 stop25h 10m

$774

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 8/26

10:00 am-4:35 am

2 stops28h 35m

Bangkok Suvarnabhumi

lun. 9/1

9:35 pm-2:25 pm

1 stop30h 50m

$780

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 11/12

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

dom. 12/7

1:00 am-9:00 am

1 stop23h 00m

$783

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 8/12

1:40 am-9:45 am

1 stop18h 05m

Bangkok Suvarnabhumi

dom. 8/31

2:40 am-7:45 pm

1 stop31h 05m

$784

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $953). 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 junio 12, 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 junio 12, 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
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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
1,490 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

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?

    $374 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on China Airlines and Korean Air, with prices starting from $405 and $407, 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 $953). 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$1,091FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$606Average$991FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$632Average$812FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$694Average$954FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$708Average$756FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$736Average$863FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$739Average$893FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
ANACheapest$759Average$924FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,080FlexibilityNo cancel feeOn-time77%

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