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$580+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Bangkok are usually found in September or October, booked 85 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 May 1, 2025.

Round-trip from

$963
(oojo)

One-way from

$580
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,282
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. 9% potential increase in price ($127 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 May 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 May 1, 2025.

This CrystalTravel deal was found by Cheapflights users on 4/30. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:00 pmIAD - BKK
1 stop28h 55mQatar Airways
Wed 9/248:00 pmBKK - IAD
1 stop30h 40mQatar Airways
Deal found 4/30$962
This oojo deal was found by Cheapflights users on 4/30. 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 9/2310:05 pmIAD - BKK
1 stop33h 30mEtihad Airways
Mon 10/62:55 amBKK - IAD
1 stop24h 15mEtihad Airways
Deal found 4/30$963
This StudentUniverse deal was found by Cheapflights users on 4/29. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/611:55 amDCA - BKK
2 stops24h 55mCathay Pacific
Wed 5/2112:30 pmBKK - DCA
2 stops31h 59mCathay Pacific
Deal found 4/29$994
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/66:10 amBWI - BKK
2 stops30h 00mMultiple Airlines
Thu 5/151:20 amBKK - BWI
3 stops33h 58mMultiple Airlines
Deal found 4/29$1,001
This oojo deal was found by Cheapflights users on 4/30. 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.
Thu 5/81:30 pmIAD - BKK
1 stop28h 45mTurkish Airlines
Thu 5/156:45 amBKK - IAD
1 stop40h 00mTurkish Airlines
Deal found 4/30$1,035
This eDestinos deal was found by Cheapflights users on 4/30. 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.
Mon 9/19:40 pmIAD - BKK
2 stops31h 30mIndiGo
Mon 9/153:50 pmBKK - IAD
2 stops38h 55mIndiGo
Deal found 4/30$1,048
This China Airlines deal was found by Cheapflights users on 4/30. 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 8/266:09 pmIAD - BKK
2 stops28h 36mMultiple Airlines
Mon 9/81:20 pmBKK - IAD
2 stops29h 12mMultiple Airlines
Deal found 4/30$1,052
This oojo deal was found by Cheapflights users on 4/30. 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 5/77:00 amIAD - BKK
2 stops29h 50mCathay Pacific
Mon 5/1912:05 pmBKK - IAD
2 stops28h 50mCathay Pacific
Deal found 4/30$1,058
This China Airlines deal was found by Cheapflights users on 4/30. 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 11/185:30 pmDCA - BKK
2 stops28h 20mMultiple Airlines
Tue 2/105:50 pmBKK - DCA
2 stops34h 25mMultiple Airlines
Deal found 4/30$1,063
This oojo deal was found by Cheapflights users on 4/30. 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 9/25:06 pmDCA - BKK
2 stops32h 04mChina Airlines
Wed 9/245:30 pmBKK - DCA
2 stops35h 29mChina Airlines
Deal found 4/30$1,077
This FlightHub deal was found by Cheapflights users on 4/30. 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 5/45:38 pmIAD - BKK
2 stops33h 42mSingapore Airlines
Wed 7/163:30 pmBKK - IAD
2 stops35h 55mSingapore Airlines
Deal found 4/30$1,096
This JetBlue deal was found by Cheapflights users on 4/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1911:00 amIAD - BKK
1 stop21h 20mJetBlue
Fri 10/249:05 pmBKK - IAD
1 stop30h 05mJetBlue
Deal found 4/30$1,100

Cheapflights Fare Finder

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 May 1, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Bangkok that are best for you.

Fly from

Washington, D.C.

Fly to

Bangkok

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 5/6

10:05 pm-7:10 am

1 stop22h 05m

Bangkok Suvarnabhumi

Thu 5/15

2:55 am-4:10 pm

1 stop24h 15m

$963

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 5/7

9:00 pm-12:55 pm

1 stop28h 55m

Bangkok Suvarnabhumi

Mon 5/19

9:05 pm-8:40 am

1 stop22h 35m

$967

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 5/6

11:55 am-11:50 pm

2 stops24h 55m

Bangkok Suvarnabhumi

Wed 5/21

12:30 pm-9:29 am

2 stops31h 59m

$994

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 5/6

6:10 am-11:10 pm

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 5/15

1:20 am-12:18 am

3 stops33h 58m

$1,001

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 5/8

1:30 pm-5:15 am

1 stop28h 45m

Bangkok Suvarnabhumi

Thu 5/15

6:45 am-11:45 am

1 stop40h 00m

$1,035

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 5/7

7:00 am-11:50 pm

2 stops29h 50m

Bangkok Suvarnabhumi

Mon 5/19

12:05 pm-5:55 am

2 stops28h 50m

$1,058

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 5/4

11:00 am-8:25 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Sun 5/18

7:00 pm-4:14 pm

2 stops56h 14m

$1,061

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 5/8

1:30 pm-3:55 pm

2 stops39h 25m

Bangkok Suvarnabhumi

Mon 6/16

3:50 pm-7:45 pm

2 stops38h 55m

$1,077

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 5/4

5:38 pm-2:20 pm

2 stops33h 42m

Bangkok Suvarnabhumi

Wed 7/16

3:30 pm-4:25 pm

2 stops35h 55m

$1,096

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 5/4

6:59 pm-9:45 am

2 stops27h 46m

Bangkok Suvarnabhumi

Tue 5/6

5:30 pm-5:22 pm

2 stops34h 52m

$1,104

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Bangkok

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 April 25, 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 85 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $955). Flying from Washington, D.C. 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 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 May 1, 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 May 1, 2025.
See what other customers who have flown with EVA Air, Japan Airlines and China Airlines 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.
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Asiana Airlines
8.2
Very good
442 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 Etihad Airways is currently your cheapest option to Bangkok, with prices starting at $963. Additional round-trip tickets that might be worth considering are offered by Qatar Airways and Cathay Pacific, with the lowest prices starting at $967 and $994, respectively. Users have found that Etihad Airways 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 Air India, which is currently one of the cheapest options available, starting at $580. Asiana Airlines flights start at $606 while deals on Cathay Pacific start at $624 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. Dubai 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 $29 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 $34 per day.

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

    Dubai Mall, Burj Khalifa, and Burj Al Arab are the most popular attractions in Dubai if you're in need of something to do during your layover. Dubai Mall, Burj Khalifa and Burj Al Arab are located about 6.5 mi, 6.8 mi, and 13.6 mi, respectively from Dubai Intl if you are interested in checking them out. Travelers in need of a car in Dubai can rent one for about $30 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 Tokyo in terms of the least popular layover location on flights from Washington, D.C. to Bangkok. Tokyo is followed by Jeddah 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $955). Flying from Washington, D.C. 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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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$629FlexibilityNo cancel feeOn-time67%
SAUDIACheapest$641Average$872FlexibilityNo cancel feeOn-time86%
Air IndiaCheapest$700Average$841FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$919Average$1,150FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$920Average$1,094FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$936Average$1,304FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$943Average$1,718FlexibilityNo cancel feeOn-time81%
JetBlueCheapest$1,011Average$1,240FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$1,065Average$1,353FlexibilityNo cancel feeOn-time71%
IndiGoCheapest$1,069Average$1,388FlexibilityNo cancel feeOn-time80%

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