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$426+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This China Airlines deal was found by Cheapflights users on 12/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:05 pmBKK - SEA
1 stop19h 05mChina Airlines
Sat 12/2712:10 amSEA - BKK
1 stop21h 55mChina Airlines
Deal found 12/16$789
This Agoda.com deal was found by Cheapflights users on 12/16. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:15 pmBKK - SEA
1 stop15h 55mEVA Air
Sat 1/311:30 pmSEA - BKK
1 stop20h 40mEVA Air
Deal found 12/16$791
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Wed 12/249:40 pmCNX - SEA
2 stops34h 50mEVA Air
Tue 12/3011:30 pmSEA - CNX
1 stop20h 05mEVA Air
Deal found 12/15$835
This China Airlines deal was found by Cheapflights users on 12/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:50 pmBKK - PDX
2 stops20h 09mMultiple Airlines
Tue 1/205:35 pmPDX - BKK
2 stops25h 15mMultiple Airlines
Deal found 12/16$915
This Agoda.com deal was found by Cheapflights users on 12/16. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:45 pmBKK - SEA
1 stop38h 55mMultiple Airlines
Sat 1/37:55 pmSEA - BKK
2 stops23h 45mMultiple Airlines
Deal found 12/16$929
This EaseMyTrip deal was found by Cheapflights users on 12/17. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:15 amBKK - PDX
1 stop16h 00mAir Canada
Tue 1/207:00 pmPDX - BKK
1 stop20h 30mAir Canada
Deal found 12/17$986
This EaseMyTrip deal was found by Cheapflights users on 12/17. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:15 amBKK - PDX
1 stop16h 00mAir Canada
Sun 1/47:00 pmPDX - BKK
1 stop20h 30mAir Canada
Deal found 12/17$1,037
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:40 pmBKK - SEA
2 stops30h 22mCathay Pacific
Sun 12/285:45 pmSEA - BKK
2 stops26h 30mCathay Pacific
Deal found 12/16$1,045
This Air Canada deal was found by Cheapflights users on 12/17. 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.
Tue 12/238:15 amBKK - PDX
1 stop16h 00mAir Canada
Fri 1/23:15 pmPDX - BKK
1 stop24h 15mAir Canada
Deal found 12/17$1,054
This Orbitz deal was found by Cheapflights users on 12/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:45 pmBKK - SEA
1 stop20h 25mMultiple Airlines
Sun 12/289:35 pmSEA - BKK
2 stops35h 05mMultiple Airlines
Deal found 12/16$1,069
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:45 pmBKK - PDX
2 stops25h 14mEVA Air
Fri 1/29:50 pmPDX - BKK
2 stops46h 20mEVA Air
Deal found 12/16$1,147
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/172:40 pmBKK - SEA
1 stop18h 30mMultiple Airlines
Wed 12/246:00 amSEA - BKK
2 stops26h 40mMultiple Airlines
Deal found 12/15$1,151

Find flight deals from Thailand to Washington

Keep the following information in mind while searching for Thailand to Washington flight deals. Data was last updated December 18, 2025.

Round-trip from

$634
(SmartFares)

One-way from

$426
(SmartFares)

Popular in

July

Cheapest in

February

Average price

$793
From Thailand to Washington
Search Deals
One-way flight from Thailand to Washington
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($106 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 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 December 18, 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

Mon 5/18

7:30 pm-8:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Thu 5/21

11:10 pm-6:30 pm

1 stop29h 20m

$719

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 5/20

7:30 pm-8:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Thu 5/21

11:10 pm-6:30 pm

1 stop29h 20m

$719

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 3/26

1:20 pm-7:40 pm

1 stop20h 20m

Seattle/Tacoma Intl

Tue 4/7

11:10 pm-6:30 pm

1 stop29h 20m

$724

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 3/27

1:20 pm-7:40 pm

1 stop20h 20m

Seattle/Tacoma Intl

Tue 4/7

11:10 pm-10:40 pm

1 stop33h 30m

$724

BangkokPortland

BKK - PDX

BKKPDX

Bangkok Suvarnabhumi

Fri 5/22

11:40 pm-9:45 am

2 stops48h 05m

Portland

Tue 9/29

5:40 pm-12:10 pm

2 stops28h 30m

$736

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 3/22

1:20 pm-7:40 pm

1 stop20h 20m

Seattle/Tacoma Intl

Thu 4/9

11:10 pm-10:40 pm

1 stop33h 30m

$741

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 3/12

11:50 pm-7:40 pm

1 stop33h 50m

Seattle/Tacoma Intl

Sun 3/15

10:30 pm-11:00 pm

1 stop34h 30m

$756

BangkokPortland

BKK - PDX

BKKPDX

Bangkok Suvarnabhumi

Tue 5/12

7:30 pm-9:45 am

2 stops52h 15m

Portland

Wed 6/3

5:55 pm-12:10 pm

2 stops28h 15m

$767

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 5/22

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

Tue 6/2

9:55 am-6:00 am

2 stops30h 05m

$782

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/16

1:45 pm-4:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Sat 4/18

1:15 am-4:40 pm

1 stop25h 25m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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, June is the cheapest month in which you can book a flight from Thailand to State of Washington (average of $624). Flying from Thailand to State of Washington 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 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 December 18, 2025.

It’s optimal to fly from Thailand to State of Washington at noon. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Thailand to State of Washington?

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

Travelers seeking maximum savings on their Thailand to State of Washington flight should consider departing on Thursday at noon 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 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 December 18, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air, and Korean Air from Thailand to Washington by reading reviews from past customers. 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
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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
246 reviews
STARLUX Airlines
8.9
Very good
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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
1,297 reviews
STARLUX Airlines
8.9
Very good
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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
1,186 reviews
STARLUX Airlines
8.9
Very good
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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
8,008 reviews
STARLUX Airlines
8.9
Very good
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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
943 reviews
STARLUX Airlines
8.9
Very good
246 reviews

Comfort

8.8

Boarding

8.9

Food

8.7

Overall

8.9

Entertainment

8.8

Crew

9.1

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

  • How long is the flight from Thailand to State of Washington?

    Airlines like Philippine Airlines, China Airlines, and EVA Air fly from Thailand to State of Washington in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 17h 15m. Thailand and State of Washington are separated by a distance of 7190 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 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 $387. Singapore Airlines flights start at $399 while deals on STARLUX Airlines start at $450 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, June is the cheapest month in which you can book a flight from Thailand to State of Washington (average of $624). Flying from Thailand to State of Washington 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

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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 8 airlines flying from Thailand to Washington

Discover the top 8 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$624Average$658FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$653Average$873FlexibilityNo cancel feeOn-time76%
STARLUX AirlinesCheapest$705Average$825FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$766Average$936FlexibilityNo cancel feeOn-time74%
ANACheapest$781Average$1,066FlexibilityNo cancel feeOn-time80%
China AirlinesCheapest$781Average$860FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$803Average$900FlexibilityNo cancel feeOn-time81%
DeltaCheapest$829Average$926FlexibilityNo cancel feeOn-timeN/A

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