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$475+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 June 16, 2025.

Round-trip from

$707
(FlightHub)

One-way from

$475
(China Airlines)

Popular in

August

Cheapest in

November

Average price

$965
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. 11% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 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 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 June 16, 2025.

This FlightHub deal was found by Cheapflights users on 6/15. 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.
Sun 7/61:20 amBKK - SEA
1 stop25h 25mMultiple Airlines
Sat 7/122:30 pmSEA - BKK
1 stop18h 55mMultiple Airlines
Deal found 6/15$707
This Trip.com deal was found by Cheapflights users on 6/14. 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.
Tue 7/111:20 pmBKK - SEA
1 stop33h 55mPhilippine Airlines
Sun 7/2711:35 pmSEA - BKK
1 stop22h 40mPhilippine Airlines
Deal found 6/14$751
This China Airlines deal was found by Cheapflights users on 6/14. 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 China Airlines 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 stop34h 15mChina Airlines
Deal found 6/14$779
This FlightHub deal was found by Cheapflights users on 6/14. 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.
Wed 9/171:10 pmBKK - SEA
1 stop17h 00mSTARLUX Airlines
Tue 10/71:15 amSEA - BKK
1 stop20h 45mSTARLUX Airlines
Deal found 6/14$795
This oojo deal was found by Cheapflights users on 6/15. 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 11/114:55 pmCNX - SEA
1 stop37h 10mSTARLUX Airlines
Thu 12/1111:45 pmSEA - CNX
1 stop25h 10mSTARLUX Airlines
Deal found 6/15$807
This oojo deal was found by Cheapflights users on 6/14. 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.
Thu 12/1812:15 amCNX - SEA
1 stop23h 45mKorean Air
Tue 1/2011:00 amSEA - CNX
1 stop21h 05mKorean Air
Deal found 6/14$815
This oojo deal was found by Cheapflights users on 6/14. 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.
Fri 12/1911:50 amCNX - SEA
1 stop21h 20mEVA Air
Mon 1/1912:10 amSEA - CNX
1 stop19h 25mEVA Air
Deal found 6/14$841
This oojo deal was found by Cheapflights users on 6/15. 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.
Wed 10/151:35 amBKK - SEA
1 stop31h 15mEVA Air
Sat 11/811:30 pmSEA - BKK
1 stop22h 05mEVA Air
Deal found 6/15$844
This Delta deal was found by Cheapflights users on 6/14. 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.
Tue 6/242:35 amBKK - SEA
1 stop25h 05mDelta
Wed 7/912:45 pmSEA - BKK
1 stop20h 40mDelta
Deal found 6/14$847
This Korean Air deal was found by Cheapflights users on 6/14. 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 9/232:35 amBKK - PDX
2 stops24h 44mKorean Air
Thu 9/259:10 amPDX - BKK
2 stops22h 35mKorean Air
Deal found 6/14$871
This Air Canada deal was found by Cheapflights users on 6/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:00 amBKK - PDX
2 stops21h 46mAir Canada
Thu 9/253:25 pmPDX - BKK
2 stops29h 35mAir Canada
Deal found 6/14$877
This Air Canada deal was found by Cheapflights users on 6/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:10 pmBKK - SEA
2 stops32h 06mAir Canada
Mon 10/132:55 pmSEA - BKK
2 stops33h 25mAir Canada
Deal found 6/16$877

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 June 16, 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

Sun 7/6

1:20 am-12:45 pm

1 stop25h 25m

Seattle/Tacoma Intl

Sat 7/12

2:30 pm-11:25 pm

1 stop18h 55m

$707

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 7/1

11:20 pm-7:15 pm

1 stop33h 55m

Seattle/Tacoma Intl

Sun 7/27

11:35 pm-12:15 pm

1 stop22h 40m

$751

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-1:25 am

1 stop34h 15m

$779

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 9/17

1:10 pm-4:10 pm

1 stop17h 00m

Seattle/Tacoma Intl

Tue 10/7

1:15 am-12:00 pm

1 stop20h 45m

$795

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 11/11

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Thu 12/11

11:45 pm-3:55 pm

1 stop25h 10m

$807

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 10/15

1:35 am-6:50 pm

1 stop31h 15m

Seattle/Tacoma Intl

Sat 11/8

11:30 pm-12:35 pm

1 stop22h 05m

$844

BangkokPortland

BKK - PDX

BKKPDX

Bangkok Suvarnabhumi

Tue 9/23

2:35 am-1:19 pm

2 stops24h 44m

Portland

Thu 9/25

9:10 am-9:45 pm

2 stops22h 35m

$871

BangkokPortland

BKK - PDX

BKKPDX

Bangkok Suvarnabhumi

Wed 9/24

7:00 am-2:46 pm

2 stops21h 46m

Portland

Thu 9/25

3:25 pm-11:00 am

2 stops29h 35m

$877

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 10/11

8:10 pm-2:16 pm

2 stops32h 06m

Seattle/Tacoma Intl

Mon 10/13

2:55 pm-2:20 pm

2 stops33h 25m

$877

BangkokPortland

BKK - PDX

BKKPDX

Bangkok Suvarnabhumi

Thu 9/25

1:10 pm-7:10 pm

2 stops20h 00m

Portland

Thu 9/25

9:30 pm-4:40 pm

2 stops29h 10m

$880

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

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 $391). 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 June 16, 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 June 16, 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
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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
178 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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
1,204 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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
1,090 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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
1,494 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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
742 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Boarding

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

Entertainment

8.9

Food

8.8

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 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 China Airlines, which is currently one of the cheapest options available, starting at $475. Air Canada flights start at $488 while deals on Philippine Airlines start at $501 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 $391). 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 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$551Average$640FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$622Average$787FlexibilityNo cancel feeOn-time76%
EVA AirCheapest$788Average$995FlexibilityNo cancel feeOn-time74%
China AirlinesCheapest$793Average$868FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$793Average$898FlexibilityNo cancel feeOn-time81%
STARLUX AirlinesCheapest$796Average$907FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$829Average$986FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$850Average$958FlexibilityNo cancel feeOn-time69%
ANACheapest$899Average$1,093FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$922Average$1,041FlexibilityNo cancel feeOn-time79%

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