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$500+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Mar 18 — Mar 251
Tue 3/18
Tue 3/25
1 adult, Economy
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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 March 13, 2025.

Round-trip from

$950
(Mytrip)

One-way from

$500
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,115
From Washington, D.C. (WAS) to Bangkok
Search Deals
One-way flight from Washington, D.C. (WAS) to Bangkok
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 13, 2025.

This Mytrip deal was found by Cheapflights users on 3/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/256:30 amBWI - BKK
2 stops30h 50mMultiple Airlines
Tue 4/11:10 amBKK - BWI
3 stops34h 02mMultiple Airlines
Deal found 3/11$950
This Etihad Airways deal was found by Cheapflights users on 3/13. 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.
Mon 5/510:05 pmIAD - BKK
1 stop38h 50mEtihad Airways
Fri 5/302:55 amBKK - IAD
1 stop24h 15mEtihad Airways
Deal found 3/13$998
This Booking.com deal was found by Cheapflights users on 3/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:00 pmIAD - BKK
1 stop37h 10mMultiple Airlines
Fri 4/259:05 pmBKK - IAD
2 stops29h 35mMultiple Airlines
Deal found 3/12$1,019
This Booking.com deal was found by Cheapflights users on 3/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1412:30 pmIAD - BKK
2 stops39h 20mIndiGo
Wed 9/245:10 pmBKK - IAD
2 stops37h 35mIndiGo
Deal found 3/11$1,024
This FlightHub deal was found by Cheapflights users on 3/13. 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.
Tue 9/309:40 pmIAD - BKK
1 stop20h 35mTurkish Airlines
Thu 10/166:45 amBKK - IAD
1 stop24h 00mTurkish Airlines
Deal found 3/13$1,036
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1511:00 amIAD - DMK
1 stop24h 50mMultiple Airlines
Wed 4/235:50 pmDMK - IAD
2 stops32h 55mMultiple Airlines
Deal found 3/12$1,069
This CheapOair deal was found by Cheapflights users on 3/13. 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 4/16:00 pmIAD - BKK
2 stops45h 25mAir China
Mon 4/147:35 pmBKK - IAD
1 stop31h 05mAir China
Deal found 3/13$1,082
This China Airlines deal was found by Cheapflights users on 3/12. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:38 pmDCA - BKK
2 stops29h 07mMultiple Airlines
Tue 4/295:30 pmBKK - DCA
2 stops35h 02mMultiple Airlines
Deal found 3/12$1,096
This FlightHub deal was found by Cheapflights users on 3/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1611:00 amIAD - BKK
1 stop22h 00mAir India
Thu 3/275:55 pmBKK - IAD
1 stop24h 55mAir India
Deal found 3/12$1,097
This oojo deal was found by Cheapflights users on 3/12. 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.
Sun 3/1611:35 amIAD - BKK
1 stop20h 10mQatar Airways
Mon 3/248:05 pmBKK - IAD
2 stops31h 50mQatar Airways
Deal found 3/12$1,103
This FlightHub deal was found by Cheapflights users on 3/13. 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 4/257:10 pmIAD - BKK
1 stop31h 35mSAUDIA
Sun 5/43:25 pmBKK - IAD
1 stop35h 20mSAUDIA
Deal found 3/13$1,104
This Gotogate deal was found by Cheapflights users on 3/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/249:40 pmIAD - BKK
2 stops27h 50mEthiopian Air
Sun 3/301:50 amBKK - IAD
2 stops29h 15mEthiopian Air
Deal found 3/12$1,133

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 March 13, 2025.

Fly from

Washington, D.C.

Fly to

Bangkok

Route

Depart

Return

Price

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 3/25

6:30 am-12:20 am

2 stops30h 50m

Bangkok Suvarnabhumi

Tue 4/1

1:10 am-12:12 am

3 stops34h 02m

$950

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 5/5

10:05 pm-11:55 pm

1 stop38h 50m

Bangkok Suvarnabhumi

Wed 5/28

2:55 am-4:10 pm

1 stop24h 15m

$998

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 4/19

6:00 pm-6:10 pm

1 stop37h 10m

Bangkok Suvarnabhumi

Fri 4/25

9:05 pm-3:40 pm

2 stops29h 35m

$1,019

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 9/8

12:30 pm-5:15 am

1 stop29h 45m

Bangkok Suvarnabhumi

Tue 9/30

6:45 am-10:45 am

1 stop39h 00m

$1,036

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 4/15

11:00 am-10:50 pm

1 stop24h 50m

Bangkok Don Mueang Intl

Wed 4/23

5:50 pm-3:45 pm

2 stops32h 55m

$1,069

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 9/4

12:30 pm-4:10 pm

2 stops40h 40m

Bangkok Suvarnabhumi

Mon 9/8

5:10 pm-7:45 pm

2 stops37h 35m

$1,081

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/1

6:00 pm-2:25 am

2 stops45h 25m

Bangkok Suvarnabhumi

Mon 4/14

7:35 pm-3:40 pm

1 stop31h 05m

$1,082

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/22

5:38 pm-9:45 am

2 stops29h 07m

Bangkok Suvarnabhumi

Tue 4/29

5:30 pm-5:32 pm

2 stops35h 02m

$1,096

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 4/27

7:10 pm-1:45 pm

2 stops31h 35m

Bangkok Suvarnabhumi

Sun 5/18

3:25 pm-3:45 pm

1 stop35h 20m

$1,103

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/22

11:00 am-8:25 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Tue 5/20

5:55 pm-7:40 am

1 stop24h 45m

$1,117

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

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 March 7, 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $968). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,577). 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 March 13, 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 March 13, 2025.
See what other customers who have flown with EVA Air, Korean Air and ANA 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
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air
8.4
Very good
1,181 reviews
EVA Air
8.4
Very good
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Korean Air
8.4
Very good
1,047 reviews
EVA Air
8.4
Very good
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

ANA
8.4
Very good
829 reviews
EVA Air
8.4
Very good
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Japan Airlines
8.3
Very good
1,438 reviews
EVA Air
8.4
Very good
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Asiana Airlines
8.2
Very good
441 reviews
EVA Air
8.4
Very good
1,181 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 $998. Additional round-trip tickets that might be worth considering are offered by Turkish Airlines and Air China, with the lowest prices starting at $1,036 and $1,082, respectively. Users have found that Etihad Airways is 23% 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 $555. Singapore Airlines flights start at $557 while deals on Asiana Airlines start at $608 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. Seoul 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 $27 per day.

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

    Myeongdong Cathedral, Dongdaemun Market, and Lotte World are the most popular attractions in Seoul if you're in need of something to do during your layover. Myeongdong Cathedral, Dongdaemun Market and Lotte World are located about 30.4 mi, 31.6 mi, and 35.7 mi, respectively from Incheon Intl if you are interested in checking them out. Travelers in need of a car in Seoul can rent one for about $58 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $968). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,577). 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 March 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$667Average$859FlexibilityNo cancel feeOn-time86%
Air IndiaCheapest$700Average$834FlexibilityNo cancel feeOn-timeN/A
IndiGoCheapest$786Average$1,482FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$920Average$1,092FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$933Average$1,175FlexibilityNo cancel feeOn-time75%
Alaska AirlinesCheapest$936Average$1,261FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$953Average$1,195FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$993Average$1,167FlexibilityNo cancel feeOn-time62%
Korean AirCheapest$1,063Average$1,686FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$1,065Average$1,371FlexibilityNo cancel feeOn-time71%
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