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$474+ Cheap flights from Washington, D.C. (WAS) 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Washington, D.C. to Bangkok are usually found in September or October, booked 46 days in advance, depart on a Saturday or Tuesday and return on a Sunday

Cheap flight deals from Washington, D.C. to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$981
(FlightHub)

One-way from

$474
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,259
From Washington, D.C. (WAS) to Bangkok
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One-way flight from Washington, D.C. (WAS) to Bangkok
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Highest demand for flights based on searches. 7% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Washington, D.C. to Bangkok

Cheapest flights from Washington, D.C. to Bangkok
Explore the most affordable flight options available from Washington, D.C. to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This FlightHub deal was found by Cheapflights users on 1/21. 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.
Sat 4/126:00 pmIAD - BKK
2 stops37h 10mAir China
Mon 4/217:35 pmBKK - IAD
1 stop31h 05mAir China
Deal found 1/21$981
This oojo deal was found by Cheapflights users on 1/21. 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 4/3012:35 pmIAD - BKK
1 stop29h 40mTurkish Airlines
Fri 5/96:45 amBKK - IAD
1 stop39h 05mTurkish Airlines
Deal found 1/21$984
This FlightHub deal was found by Cheapflights users on 1/21. 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.
Fri 3/2811:00 amIAD - BKK
1 stop40h 05mAir India
Sun 4/610:30 pmBKK - IAD
1 stop43h 45mAir India
Deal found 1/21$996
This Etihad Airways deal was found by Cheapflights users on 1/21. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:00 pmIAD - BKK
1 stop22h 05mEtihad Airways
Sun 9/219:15 amBKK - IAD
1 stop42h 20mEtihad Airways
Deal found 1/21$998
This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/257:00 amBWI - BKK
2 stops28h 35mMultiple Airlines
Thu 3/68:05 amBKK - BWI
2 stops27h 53mMultiple Airlines
Deal found 1/21$1,002
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1110:30 pmIAD - DMK
2 stops25h 35mMultiple Airlines
Wed 3/2611:50 amDMK - IAD
2 stops40h 35mMultiple Airlines
Deal found 1/20$1,016
This Priceline deal was found by Cheapflights users on 1/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3111:15 amIAD - BKK
1 stop39h 50mMultiple Airlines
Mon 9/228:10 pmBKK - IAD
2 stops45h 35mMultiple Airlines
Deal found 1/21$1,059
This China Airlines deal was found by Cheapflights users on 1/19. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/115:32 pmDCA - BKK
2 stops31h 33mMultiple Airlines
Wed 2/192:05 pmBKK - DCA
2 stops38h 10mMultiple Airlines
Deal found 1/19$1,105
This FlightHub deal was found by Cheapflights users on 1/21. 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 2/276:10 pmIAD - BKK
2 stops31h 30mSAUDIA
Tue 4/13:25 pmBKK - IAD
1 stop35h 20mSAUDIA
Deal found 1/21$1,142
This oojo deal was found by Cheapflights users on 1/20. 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.
Mon 3/35:15 pmDCA - BKK
2 stops29h 25mCathay Pacific
Mon 3/107:15 pmBKK - DCA
2 stops32h 00mCathay Pacific
Deal found 1/20$1,159
This Gotogate deal was found by Cheapflights users on 1/21. 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.
Wed 1/298:40 pmIAD - BKK
2 stops27h 50mEthiopian Air
Tue 2/251:35 amBKK - IAD
2 stops29h 30mEthiopian Air
Deal found 1/21$1,159
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:00 amDCA - BKK
2 stops28h 55mAir Canada
Wed 9/247:35 amBKK - DCA
2 stops24h 31mAir Canada
Deal found 1/20$1,205

Find flights from Washington, D.C. to Bangkok within your budget

Customize your flight search to find flights from Washington, D.C. 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 2/22

4:35 pm-12:10 am

2 stops43h 35m

Bangkok Suvarnabhumi

Fri 3/21

1:30 am-3:10 pm

1 stop24h 40m

$981

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 4/17

12:35 pm-9:30 am

1 stop33h 55m

Bangkok Suvarnabhumi

Wed 4/23

6:45 am-10:50 am

1 stop39h 05m

$990

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 3/28

11:00 am-2:05 pm

1 stop40h 05m

Bangkok Suvarnabhumi

Sun 4/6

10:30 pm-7:15 am

1 stop43h 45m

$996

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 2/25

7:00 am-11:35 pm

2 stops28h 35m

Bangkok Suvarnabhumi

Thu 3/6

8:05 am-11:58 pm

2 stops27h 53m

$1,002

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 2/21

9:30 pm-11:35 pm

1 stop38h 05m

Bangkok Suvarnabhumi

Tue 3/11

2:15 am-5:25 pm

1 stop26h 10m

$1,009

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 3/2

9:30 pm-3:35 pm

2 stops30h 05m

Bangkok Don Mueang Intl

Mon 3/17

11:50 am-5:25 pm

2 stops40h 35m

$1,017

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 3/24

6:50 pm-10:45 pm

2 stops40h 55m

Bangkok Don Mueang Intl

Mon 3/31

1:05 pm-7:25 pm

2 stops41h 20m

$1,044

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 3/2

10:00 am-2:05 pm

1 stop40h 05m

Bangkok Suvarnabhumi

Tue 3/18

9:30 pm-10:50 am

1 stop24h 20m

$1,072

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 2/25

9:00 am-10:40 am

2 stops37h 40m

Bangkok Suvarnabhumi

Tue 3/4

7:15 pm-4:15 pm

2 stops33h 00m

$1,148

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/17

8:40 pm-12:30 pm

2 stops27h 50m

Bangkok Suvarnabhumi

Sun 3/23

1:35 am-7:50 pm

2 stops29h 15m

$1,160

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 58 results
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Best time to book a flight from Washington, D.C. to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Washington, D.C. 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, D.C. to Bangkok

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

How far ahead should I book a flight from Washington, D.C. to Bangkok?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Bangkok. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Bangkok, you should look to book at least 46 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. to Bangkok?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $996). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,585). 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 WAS to BKK?

Find hourly flight availability from Washington, D.C. 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 January 21, 2025.

It’s typically best to fly out from Washington, D.C. to Bangkok in the evening. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. to Bangkok?

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

Travelers seeking maximum savings on their Washington, D.C. to Bangkok flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 21, 2025.
See what other customers who have flown with Etihad Airways, Ethiopian Air and Qatar Airways from Washington, D.C. to Bangkok have to say. 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.
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,039 reviews
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

ANA
8.4
Very good
852 reviews
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,449 reviews
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Asiana Airlines
8.3
Very good
466 reviews
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Singapore Airlines
8.1
Very good
1,328 reviews
Korean Air
8.5
Very good
1,039 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.5

Entertainment

8.2

Crew

8.7

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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 flying from Washington, D.C. to Bangkok round-trip?

    Flying on Air China is currently your cheapest option to Bangkok, with prices starting at $981. Additional round-trip tickets that might be worth considering are offered by Turkish Airlines and Air India, with the lowest prices starting at $990 and $996, respectively. Users have found that Air China is 25% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to Bangkok one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $560. Air India flights start at $566 while deals on Cathay Pacific start at $583 one-way.

  • What are the most popular routes from Washington, D.C. to Bangkok?

    The most popular flight routes from Washington, D.C. to Bangkok are Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi, Washington, D.C. Reagan-National - Bangkok Suvarnabhumi and Baltimore/Washington - Bangkok Suvarnabhumi.

  • Where are the most common layover locations when flying from Washington, D.C. to Bangkok?

    Of the flights from Washington, D.C. to Bangkok that have layovers, most of them stop in Doha. Istanbul sees the next most layovers on Washington, D.C. to Bangkok flights. Incheon comes in third as the most popular layover location on Washington, D.C. to Bangkok flights.

  • What are some popular things to do or see while on a layover in Doha?

    Museum of Islamic Art, Katara Cultural Village, and Aspire Tower are currently the most popular points of interest in Doha at the moment. Those on a layover in Doha interested in visiting Museum of Islamic Art, Katara Cultural Village, or Aspire Tower can do so by traveling 5.2 mi, 8.7 mi, and 10.6 mi, respectively from Doha Hamad Intl. Those landing in Doha looking to spend some time exploring during their layover can rent a car for about $30 per day.

  • What are some popular points of interest to see during a layover in Istanbul?

    The majority of Istanbul visitors spend their time at Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani. Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani can be visited by traveling about 20.8 mi, 22.3 mi, and 21.7 mi respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $28 per day.

  • What are points of interest worth seeing during a layover in Incheon?

    G Tower, Wolmido Amusement Park, and Moraenae Market are the most popular attractions in Incheon if you're in need of something to do during your layover. G Tower, Wolmido Amusement Park and Moraenae Market are located about 10.7 mi, 8.3 mi, and 14.7 mi, respectively from Incheon Intl if you are interested in checking them out. Travelers in need of a car in Incheon can rent one for about $46 per day.

  • Where are the least popular layover locations for Washington, D.C. to Bangkok flights?

    Washington, D.C. to Bangkok flights have a layover in Atlanta the least frequently. Atlanta is followed by Abu Dhabi in terms of the least popular layover location on flights from Washington, D.C. to Bangkok. Abu Dhabi is followed by Tokyo in terms of the least popular layover location for Washington, D.C. to Bangkok flights.

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

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

  • How can I find direct flights from Washington, D.C. to Bangkok?

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

  • Can I find deals for business class flights from Washington, D.C. to Bangkok?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Bangkok?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $996). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,585). 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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Top 10 airlines flying from Washington, D.C. to Bangkok

Discover the top 10 airlines that operate flights from Washington, D.C. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$674Average$795FlexibilityNo cancel feeOn-timeN/A
SAUDIACheapest$690Average$833FlexibilityNo cancel feeOn-time86%
DeltaCheapest$719Average$1,515FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$829Average$1,113FlexibilityNo cancel feeOn-time67%
ANACheapest$855Average$1,395FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$921Average$1,083FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$924Average$1,168FlexibilityNo cancel feeOn-time75%
Alaska AirlinesCheapest$936Average$1,244FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$963Average$1,499FlexibilityNo cancel feeOn-time81%
JetBlueCheapest$989Average$1,166FlexibilityNo cancel feeOn-time62%
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