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$334+ Cheap flights from Washington 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Washington to Thailand

Keep the following information in mind while searching for Washington to Thailand flight deals. Data was last updated February 20, 2025.

Round-trip from

$695
(Gotogate)

One-way from

$334
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$845
From Washington to Thailand
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One-way flight from Washington to Thailand
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($220 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Washington to Thailand

Cheapest flights from Washington to Thailand
Explore the most affordable flight options available from Washington to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Gotogate deal was found by Cheapflights users on 2/19. 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.
Sun 4/2011:30 pmSEA - BKK
1 stop28h 10mPhilippine Airlines
Sat 4/266:40 pmBKK - SEA
1 stop38h 40mPhilippine Airlines
Deal found 2/19$687
This FlightHub deal was found by Cheapflights users on 2/19. 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 3/3010:15 amSEA - BKK
1 stop19h 45mSingapore Airlines
Tue 5/68:10 pmBKK - SEA
2 stops34h 30mSingapore Airlines
Deal found 2/19$700
This oojo deal was found by Cheapflights users on 2/20. 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 3/91:45 pmSEA - BKK
1 stop20h 35mAsiana Airlines
Mon 6/91:10 amBKK - SEA
1 stop25h 20mAsiana Airlines
Deal found 2/20$725
This oojo deal was found by Cheapflights users on 2/19. 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 3/3012:50 pmSEA - BKK
1 stop18h 55mKorean Air
Sat 5/179:50 amBKK - SEA
1 stop38h 50mKorean Air
Deal found 2/19$743
This FlightHub deal was found by Cheapflights users on 2/20. 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.
Thu 10/910:15 amSEA - HKT
1 stop37h 55mSingapore Airlines
Thu 10/168:10 pmHKT - SEA
1 stop26h 35mSingapore Airlines
Deal found 2/20$743
This KAYAK deal was found by Cheapflights users on 2/20. 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.
Mon 5/267:10 amSEA - CNX
2 stops40h 15mChina Eastern
Wed 6/42:55 pmCNX - SEA
2 stops40h 05mChina Eastern
Deal found 2/20$764
This Gotogate deal was found by Cheapflights users on 2/19. 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.
Sun 4/201:10 amSEA - BKK
1 stop34h 15mChina Airlines
Mon 4/285:30 pmBKK - SEA
1 stop16h 00mChina Airlines
Deal found 2/19$769
This Delta deal was found by Cheapflights users on 2/18. 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.
Mon 3/1011:35 amSEA - BKK
1 stop23h 10mDelta
Wed 4/99:50 amBKK - SEA
1 stop17h 40mDelta
Deal found 2/18$777
This eDestinos deal was found by Cheapflights users on 2/19. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:30 pmSEA - BKK
1 stop33h 00mANA
Tue 5/139:35 pmBKK - SEA
1 stop30h 50mANA
Deal found 2/19$789
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 3/234:45 pmSEA - BKK
1 stop22h 25mUnited Airlines
Mon 6/97:00 amBKK - SEA
2 stops28h 58mUnited Airlines
Deal found 2/19$796
This FlightHub deal was found by Cheapflights users on 2/19. 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 3/231:10 amSEA - CNX
1 stop19h 15mChina Airlines
Tue 4/111:20 amCNX - SEA
1 stop22h 10mChina Airlines
Deal found 2/19$804
This Expedia deal was found by Cheapflights users on 2/18. 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.
Tue 4/110:15 amSEA - BKK
1 stop19h 45mMultiple Airlines
Wed 4/301:30 pmBKK - SEA
1 stop19h 50mMultiple Airlines
Deal found 2/18$819

Find flights from Washington to Thailand within your budget

Customize your flight search to find flights from Washington 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 February 20, 2025.

Fly from

Washington

Fly to

Thailand

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/20

11:30 pm-5:40 pm

1 stop28h 10m

Bangkok Suvarnabhumi

Sat 4/26

6:40 pm-7:20 pm

1 stop38h 40m

$687

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/30

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Tue 5/6

8:10 pm-4:40 pm

2 stops34h 30m

$700

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/9

1:45 pm-12:20 am

1 stop20h 35m

Bangkok Suvarnabhumi

Mon 6/9

1:10 am-12:30 pm

1 stop25h 20m

$725

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/30

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Sat 5/17

9:50 am-10:40 am

1 stop38h 50m

$743

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 5/26

7:10 am-1:25 pm

2 stops40h 15m

Chiang Mai

Wed 6/4

2:55 pm-5:00 pm

2 stops40h 05m

$764

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/20

1:10 am-1:25 am

1 stop34h 15m

Bangkok Suvarnabhumi

Mon 4/28

5:30 pm-7:30 pm

1 stop16h 00m

$769

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 3/10

11:35 am-12:45 am

1 stop23h 10m

Bangkok Suvarnabhumi

Thu 4/3

9:50 am-1:30 pm

1 stop17h 40m

$777

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 3/27

4:45 pm-5:10 am

1 stop22h 25m

Bangkok Suvarnabhumi

Thu 6/12

9:35 am-2:25 pm

1 stop18h 50m

$782

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 5/1

4:30 pm-3:30 pm

1 stop33h 00m

Bangkok Suvarnabhumi

Tue 5/13

9:35 pm-2:25 pm

1 stop30h 50m

$789

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 3/23

1:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Tue 4/1

11:20 am-7:30 pm

1 stop22h 10m

$804

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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

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

Travel insights for flights from Washington to Thailand

Get recent, data-driven insights about flights from Washington to Thailand including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from State of Washington to Thailand (average of $976). Flying from State of Washington to Thailand in June is currently the most expensive (average of $1,580). 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 WA to TH?

Find hourly flight availability from Washington 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 February 20, 2025.

When flying from State of Washington to Thailand, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 February 20, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Washington to Thailand by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air
8.4
Very good
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,037 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA
8.4
Very good
842 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Crew

9.3

Food

9.0

Comfort

9.0

Boarding

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

Find useful and relevant information for your journey from Washington to Thailand. 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 State of Washington to Thailand one-way?

    The cheapest airlines for a one-way flight from State of Washington to Thailand are Singapore Airlines ($334), Qatar Airways ($411), and STARLUX Airlines ($439).

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Thailand (average of $976). Flying from State of Washington to Thailand in June is currently the most expensive (average of $1,580). 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 Washington 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 Washington to Thailand

Discover the top 10 airlines that operate flights from Washington 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$630Average$904FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$636Average$824FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$707Average$1,189FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$710Average$768FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$749Average$843FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
DeltaCheapest$760Average$1,261FlexibilityNo cancel feeOn-timeN/A
ANACheapest$761Average$948FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,071FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$786Average$1,015FlexibilityNo cancel feeOn-time69%
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