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$463+ Cheap flights from Thailand to Washington

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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Thailand to Washington

Keep the following information in mind while searching for Thailand to Washington flight deals. Data was last updated May 1, 2025.

Round-trip from

$634
(oojo)

One-way from

$463
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$966
From Thailand to Washington
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One-way flight from Thailand to Washington
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Highest demand for flights based on searches. 2% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 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 Thailand to Washington

Cheapest flights from Thailand to Washington
Explore the most affordable flight options available from Thailand to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

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.
Tue 9/1611:20 pmBKK - SEA
1 stop33h 55mPhilippine Airlines
Wed 10/811:35 pmSEA - BKK
1 stop32h 50mPhilippine Airlines
Deal found 4/30$634
This Korean Air 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1011:15 pmCNX - SEA
1 stop25h 35mKorean Air
Tue 8/121:20 pmSEA - CNX
1 stop18h 35mKorean Air
Deal found 4/30$803
This Korean Air 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:00 amBKK - SEA
1 stop23h 00mKorean Air
Wed 11/1911:00 amSEA - BKK
1 stop19h 30mKorean Air
Deal found 4/30$806
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.
Mon 6/211:55 amBKK - SEA
1 stop38h 35mAsiana Airlines
Mon 6/302:15 pmSEA - BKK
1 stop30h 40mAsiana Airlines
Deal found 4/30$822
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 9/152:40 amBKK - SEA
1 stop30h 40mChina Airlines
Tue 10/71:10 amSEA - BKK
1 stop18h 35mChina Airlines
Deal found 4/30$824
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/131:00 amBKK - SEA
1 stop23h 40mMultiple Airlines
Sat 5/3112:50 pmSEA - BKK
1 stop21h 09mMultiple Airlines
Deal found 4/30$825
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.
Sun 6/111:20 amCNX - SEA
1 stop22h 10mChina Airlines
Sun 6/291:10 amSEA - CNX
1 stop19h 10mChina Airlines
Deal found 4/30$826
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.
Mon 6/211:35 amCNX - SEA
1 stop21h 55mEVA Air
Mon 6/301:50 amSEA - CNX
1 stop18h 35mEVA Air
Deal found 4/30$827
This CheapTickets.ch deal was found by Cheapflights users on 5/1. 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/231:10 pmBKK - SEA
1 stop17h 00mSTARLUX Airlines
Fri 10/31:15 amSEA - BKK
1 stop20h 45mSTARLUX Airlines
Deal found 5/1$827
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 9/293:10 pmBKK - SEA
1 stop18h 20mEVA Air
Sun 10/121:30 amSEA - BKK
1 stop19h 30mEVA Air
Deal found 4/30$828
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/149:20 amCNX - SEA
2 stops23h 55mMultiple Airlines
Wed 7/911:35 pmSEA - CNX
2 stops27h 15mMultiple Airlines
Deal found 4/30$834
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 6/111:15 pmCNX - SEA
1 stop28h 25mDelta
Sat 9/1312:45 pmSEA - CNX
1 stop19h 10mDelta
Deal found 4/30$850

Cheapflights Fare Finder

Customize your flight search to find flights from Thailand to Washington 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 Thailand to Washington that are best for you.

Fly from

Thailand

Fly to

Washington

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 9/16

11:20 pm-7:15 pm

1 stop33h 55m

Seattle/Tacoma Intl

Wed 10/8

11:35 pm-10:25 pm

1 stop32h 50m

$634

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 6/10

11:15 pm-10:50 am

1 stop25h 35m

Seattle/Tacoma Intl

Tue 8/12

1:20 pm-9:55 pm

1 stop18h 35m

$803

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 6/2

11:55 am-12:30 pm

1 stop38h 35m

Seattle/Tacoma Intl

Mon 6/30

2:15 pm-10:55 am

1 stop30h 40m

$822

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 9/15

2:40 am-7:20 pm

1 stop30h 40m

Seattle/Tacoma Intl

Tue 10/7

1:10 am-9:45 am

1 stop18h 35m

$824

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 5/13

1:00 am-10:40 am

1 stop23h 40m

Seattle/Tacoma Intl

Sat 5/31

12:50 pm-11:59 pm

1 stop21h 09m

$825

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 6/1

11:20 am-7:30 pm

1 stop22h 10m

Seattle/Tacoma Intl

Sun 6/29

1:10 am-10:20 am

1 stop19h 10m

$826

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 6/2

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Mon 6/30

1:50 am-10:25 am

1 stop18h 35m

$827

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 5/23

1:10 pm-4:10 pm

1 stop17h 00m

Seattle/Tacoma Intl

Fri 10/3

1:15 am-12:00 pm

1 stop20h 45m

$827

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 9/29

3:10 pm-7:30 pm

1 stop18h 20m

Seattle/Tacoma Intl

Sun 10/12

1:30 am-11:00 am

1 stop19h 30m

$828

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 5/14

9:20 am-7:15 pm

2 stops23h 55m

Seattle/Tacoma Intl

Wed 7/9

11:35 pm-4:50 pm

2 stops27h 15m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 60 results
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Best time to book a flight from Thailand to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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 Washington

What is the cheapest month to book a flight from Thailand to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Thailand to State of Washington (average of $238). Flying from Thailand to State of Washington in July is currently the most expensive (average of $405). 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 WA?

Find hourly flight availability from Thailand to Washington. 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 Thailand to State of Washington as you normally would.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated May 1, 2025.
To help decide which airline to fly from Thailand to Washington, see what other customers have to say about STARLUX Airlines, EVA Air and Korean Air. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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
162 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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
1,069 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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
1,464 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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
162 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

9.0

Food

8.9

Crew

9.3

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 Thailand to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Thailand to State of Washington one-way?

    To fly one-way, consider booking your trip with Philippine Airlines, which is currently one of the cheapest options available, starting at $466. China Airlines flights start at $508 while deals on STARLUX Airlines start at $509 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Thailand to Washington 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 State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Thailand to State of Washington (average of $238). Flying from Thailand to State of Washington in July is currently the most expensive (average of $405). 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

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Alternative routes for Thailand to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Thailand to Washington

Discover the top 10 airlines that operate flights from Thailand to Washington. 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
Philippine AirlinesCheapest$551Average$641FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$622Average$812FlexibilityNo cancel feeOn-time76%
EVA AirCheapest$788Average$1,056FlexibilityNo cancel feeOn-time74%
China AirlinesCheapest$793Average$868FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$796Average$955FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$802Average$926FlexibilityNo cancel feeOn-time81%
DeltaCheapest$829Average$986FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$856Average$961FlexibilityNo cancel feeOn-time69%
ANACheapest$867Average$1,093FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$922Average$1,041FlexibilityNo cancel feeOn-time79%

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