HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bangkok

$337+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
nov. 9 — nov. 161
dom. 11/9
dom. 11/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Bangkok with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 octubre 10, 2025.

Round-trip from

$660
(FlightHub)

One-way from

$337
(oojo)

Popular in

June

Cheapest in

September

Average price

$816
From Washington to Bangkok
Search Deals
One-way flight from Washington to Bangkok
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 octubre 10, 2025.

This oojo deal was found by Cheapflights users on 10/7. 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.
mié. 11/269:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
jue. 12/251:20 pmBKK - SEA
1 stop20h 20mPhilippine Airlines
Deal found 10/7$662
This lastminute.com deal was found by Cheapflights users on 10/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2712:00 pmSEA - BKK
1 stop21h 20mKorean Air
dom. 11/99:40 amBKK - SEA
2 stops27h 29mKorean Air
Deal found 10/8$663
This oojo deal was found by Cheapflights users on 10/6. 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.
mié. 11/59:30 pmSEA - BKK
1 stop34h 30mPhilippine Airlines
mié. 12/1011:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
Deal found 10/6$665
This oojo deal was found by Cheapflights users on 10/8. 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. 11/48:45 amSEA - BKK
1 stop20h 15mSingapore Airlines
mié. 11/129:10 pmBKK - SEA
1 stop25h 00mSingapore Airlines
Deal found 10/8$666
This Gotogate deal was found by Cheapflights users on 10/7. 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. 11/412:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
mié. 11/1911:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 10/7$667
This oojo deal was found by Cheapflights users on 10/7. 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. 12/211:00 amSEA - BKK
1 stop19h 30mKorean Air
lun. 12/812:55 amBKK - SEA
1 stop23h 05mKorean Air
Deal found 10/7$668
This FlightHub deal was found by Cheapflights users on 10/7. 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.
lun. 11/312:10 amSEA - BKK
1 stop20h 05mAsiana Airlines
dom. 11/3012:20 pmBKK - SEA
1 stop16h 35mAsiana Airlines
Deal found 10/7$670
This FlightHub deal was found by Cheapflights users on 10/8. 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.
dom. 11/3012:10 amSEA - BKK
1 stop30h 50mAsiana Airlines
vie. 12/511:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 10/8$671
This FlightHub deal was found by Cheapflights users on 10/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/29:30 pmSEA - BKK
1 stop23h 30mPhilippine Airlines
mié. 12/1711:50 pmBKK - SEA
1 stop33h 50mPhilippine Airlines
Deal found 10/9$675
This FlightHub deal was found by Cheapflights users on 10/7. 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.
mié. 10/2211:35 pmSEA - BKK
1 stop22h 40mPhilippine Airlines
mié. 12/106:45 pmBKK - SEA
1 stop38h 55mPhilippine Airlines
Deal found 10/7$676
This FlightHub deal was found by Cheapflights users on 10/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/117:39 pmGEG - BKK
2 stops25h 56mSTARLUX Airlines
mié. 12/101:45 pmBKK - GEG
2 stops21h 20mSTARLUX Airlines
Deal found 10/9$763
This oojo deal was found by Cheapflights users on 10/8. 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.
jue. 11/68:21 amPSC - BKK
2 stops37h 14mMultiple Airlines
mar. 11/181:45 pmBKK - PSC
2 stops22h 06mMultiple Airlines
Deal found 10/8$769

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 octubre 10, 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

mié. 1/14

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

sáb. 2/14

11:55 pm-1:55 pm

1 stop29h 00m

$694

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

vie. 1/16

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

dom. 2/8

12:55 am-1:20 pm

1 stop27h 25m

$694

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

vie. 1/16

11:25 am-11:20 pm

1 stop20h 55m

Bangkok Suvarnabhumi

dom. 2/15

9:40 am-1:20 pm

1 stop18h 40m

$695

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 11/17

11:00 am-11:20 pm

1 stop21h 20m

Bangkok Suvarnabhumi

mié. 12/3

9:30 pm-9:00 am

1 stop26h 30m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 11/26

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

mar. 12/23

9:30 pm-9:00 am

1 stop26h 30m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 11/24

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

dom. 12/7

2:05 am-9:00 am

1 stop21h 55m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

jue. 1/22

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

vie. 1/30

12:55 am-9:00 am

1 stop23h 05m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 12/2

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

lun. 12/15

2:05 am-9:00 am

1 stop21h 55m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 1/17

7:20 am-12:55 am

2 stops26h 35m

Bangkok Suvarnabhumi

dom. 2/15

9:40 am-9:00 am

1 stop38h 20m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 12/2

11:00 am-9:30 pm

1 stop19h 30m

Bangkok Suvarnabhumi

mié. 12/10

2:05 am-9:00 am

1 stop21h 55m

$698

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 60 results
1
2
3
...
6

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, February is the cheapest month in which you can book a flight from State of Washington to Bangkok (average of $532). Flying from State of Washington to Bangkok in June is currently the most expensive (average of $996). 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 octubre 10, 2025.

One of the essential ways to save on airfare from State of Washington to Bangkok is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 20% on airfare.

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

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

Travelers seeking maximum savings on their State of Washington to Bangkok flight should consider departing on Monday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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

    Airlines like Asiana Airlines, Delta, and Korean Air fly from State of Washington to Bangkok in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 9h 30m. State of Washington and Bangkok are separated by a distance of 7443 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $372. However, be on the lookout for offers from Korean Air and STARLUX Airlines, 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, Seattle/Tacoma Intl - Bangkok Don Mueang Intl and Portland - Bangkok Suvarnabhumi.

  • 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, February is the cheapest month in which you can book a flight from State of Washington to Bangkok (average of $532). Flying from State of Washington to Bangkok in June is currently the most expensive (average of $996). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Bangkok

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Suvarnabhumi flights
John F Kennedy Intl to Suvarnabhumi flights
Seattle to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
Newark to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
O'Hare Intl to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
Dulles Intl to Suvarnabhumi flights
Hobby to Suvarnabhumi flights
Los Angeles to Don Mueang Intl flights
Ontario to Suvarnabhumi flights
Baltimore to Suvarnabhumi flights
Boston to Suvarnabhumi flights
George Bush Intcntl to Suvarnabhumi flights
Denver to Suvarnabhumi flights
Atlanta to Suvarnabhumi flights
Reagan-National to Suvarnabhumi flights
John F Kennedy Intl to Don Mueang Intl flights
Santa Ana to Suvarnabhumi flights
Burbank to Suvarnabhumi flights
Miami to Suvarnabhumi flights
San Francisco to Don Mueang Intl flights
Love Field to Suvarnabhumi flights
Dulles Intl to Don Mueang Intl flights
Midway to Suvarnabhumi flights
San Jose to Suvarnabhumi flights
John F Kennedy Intl to Phuket City flights
Detroit to Suvarnabhumi flights
Oakland to Suvarnabhumi flights
San Diego to Suvarnabhumi flights
Minneapolis to Suvarnabhumi flights
Orlando to Suvarnabhumi flights
Dallas/Fort Worth to Don Mueang Intl flights
Seattle to Don Mueang Intl flights
Philadelphia to Suvarnabhumi flights
Sky Harbor Intl to Suvarnabhumi flights
Las Vegas to Suvarnabhumi flights
Portland to Suvarnabhumi flights
Jacksonville to Suvarnabhumi flights
New Orleans to Suvarnabhumi flights
Honolulu to Suvarnabhumi flights
Lafayette to Suvarnabhumi flights
Hobby to Phuket City flights
Memphis to Suvarnabhumi flights
George Bush Intcntl to Don Mueang Intl flights
O'Hare Intl to Don Mueang Intl flights
Omaha to Suvarnabhumi flights
Tampa to Suvarnabhumi flights
Long Beach to Suvarnabhumi flights

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 octubre 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$845FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$523Average$724FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$605Average$743FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$624Average$707FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$671Average$823FlexibilityNo cancel feeOn-time81%
ANACheapest$712Average$892FlexibilityNo cancel feeOn-time80%
STARLUX AirlinesCheapest$740Average$866FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$743Average$850FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$879FlexibilityNo cancel feeOn-time62%
Turkish AirlinesCheapest$773Average$1,105FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.