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$393+ Cheap flights from Washington to Bangkok

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 8/10. 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 Washington to Bangkok

Keep the following information in mind while searching for Washington to Bangkok flight deals. Data was last updated junio 12, 2025.

Round-trip from

$767
(FlightHub)

One-way from

$393
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$1,195
From Washington to Bangkok
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One-way flight from Washington to Bangkok
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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 Washington to Bangkok

Cheapest flights from Washington to Bangkok
Explore the most affordable flight options available from Washington to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

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 Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/19:15 amGEG - BKK
2 stops24h 10mDelta
dom. 10/192:35 amBKK - GEG
2 stops34h 12mDelta
Deal found 6/10$794
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.
lun. 9/17:10 amGEG - BKK
2 stops26h 15mKorean Air
lun. 10/209:50 amBKK - GEG
2 stops25h 34mKorean Air
Deal found 6/10$800
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/1612:55 pmSEA - BKK
1 stop20h 30mDelta
lun. 9/89:40 pmBKK - SEA
1 stop30h 00mDelta
Deal found 6/11$815
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/132:15 pmSEA - BKK
1 stop30h 40mMultiple Airlines
sáb. 9/276:40 pmBKK - SEA
1 stop38h 35mMultiple Airlines
Deal found 6/11$817
This Travelocity deal was found by Cheapflights users on 6/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/219:45 amGEG - BKK
2 stops30h 15mMultiple Airlines
jue. 7/249:35 amBKK - GEG
2 stops21h 38mMultiple Airlines
Deal found 6/9$832

Cheapflights Fare Finder

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

Fly from

Washington

Fly to

Bangkok

Route

Depart

Return

Price

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

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 8/13

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

jue. 9/4

9:35 am-2:25 pm

1 stop18h 50m

$785

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

lun. 9/1

9:15 am-11:25 pm

2 stops24h 10m

Bangkok Suvarnabhumi

dom. 10/19

2:35 am-10:47 pm

2 stops34h 12m

$794

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

lun. 9/1

7:10 am-11:25 pm

2 stops26h 15m

Bangkok Suvarnabhumi

lun. 10/20

11:30 pm-2:44 pm

2 stops29h 14m

$800

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 8/16

12:55 pm-11:25 pm

1 stop20h 30m

Bangkok Suvarnabhumi

mar. 9/9

11:30 pm-1:40 pm

1 stop28h 10m

$815

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 Washington to Bangkok

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

Cheapflights Insights

Everything you need to know about your flight from Washington to Bangkok

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

Currently, March is the cheapest month in which you can book a flight from State of Washington to Bangkok (average of $953). Flying from State of Washington to Bangkok 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 WA to BKK?

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

Rainfall in Bangkok by month

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

In terms of precipitation, rainfall in Bangkok 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 Bangkok when rainfall is around 0.4 in.

Temperature in Bangkok by month

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

If weather is an important factor for your trip to Bangkok, 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 Bangkok

Get insights into the airlines that provide service to Bangkok. 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 Bangkok. Reviews last updated junio 12, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Washington to Bangkok by reading reviews from past customers. 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

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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
1,202 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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
1,088 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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
1,489 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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
738 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

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 Washington to Bangkok. 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 Bangkok one-way?

    The cheapest airline one-way is Asiana Airlines, with whom users have recently found tickets for as low as $399. However, be on the lookout for offers from China Airlines and Korean Air, as they are both options that can get you from State of Washington to Bangkok for a low price.

  • What are the most popular routes from State of Washington to Bangkok?

    The most popular flight routes from State of Washington to Bangkok are Seattle/Tacoma Intl - Bangkok Suvarnabhumi, Portland - Bangkok Suvarnabhumi and Seattle/Tacoma Intl - Bangkok Don Mueang Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Bangkok 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 Bangkok?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Bangkok (average of $953). Flying from State of Washington to Bangkok 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Bangkok

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 Bangkok

Discover the top 10 airlines that operate flights from Washington to Bangkok. 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$1,020FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$606Average$785FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$632Average$772FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$694Average$960FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$708Average$756FlexibilityNo cancel feeOn-time60%
STARLUX AirlinesCheapest$739Average$893FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
China AirlinesCheapest$758Average$865FlexibilityNo cancel feeOn-time70%
ANACheapest$759Average$924FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$773Average$1,080FlexibilityNo cancel feeOn-time77%

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