HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bangkok

$501+ 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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. 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.

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 February 23, 2025.

Round-trip from

$945
(oojo)

One-way from

$501
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$1,230
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. 7% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 23, 2025.

This oojo deal was found by Cheapflights users on 2/21. 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.
Tue 4/2910:05 pmIAD - BKK
1 stop33h 30mEtihad Airways
Mon 5/122:55 amBKK - IAD
1 stop24h 40mEtihad Airways
Deal found 2/21$945
This Mytrip deal was found by Cheapflights users on 2/22. 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.
Wed 3/265:30 amBWI - BKK
2 stops31h 05mMultiple Airlines
Tue 4/15:05 amBKK - BWI
3 stops30h 07mMultiple Airlines
Deal found 2/22$961
This oojo deal was found by Cheapflights users on 2/21. 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.
Sat 3/225:35 pmIAD - BKK
2 stops37h 30mAir China
Fri 3/281:30 amBKK - IAD
1 stop24h 40mAir China
Deal found 2/21$981
This FlightHub deal was found by Cheapflights users on 2/21. 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.
Tue 4/2912:30 pmIAD - BKK
1 stop39h 55mTurkish Airlines
Wed 5/146:45 amBKK - IAD
1 stop24h 00mTurkish Airlines
Deal found 2/21$996
This Flighttix deal was found by Cheapflights users on 2/22. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:22 pmIAD - BKK
2 stops28h 23mMultiple Airlines
Tue 4/155:30 pmBKK - IAD
2 stops23h 04mMultiple Airlines
Deal found 2/22$1,020
This Trip.com deal was found by Cheapflights users on 2/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1510:30 pmIAD - DMK
2 stops42h 40mMultiple Airlines
Mon 3/318:35 pmDMK - IAD
2 stops55h 00mMultiple Airlines
Deal found 2/23$1,038
This Mytrip deal was found by Cheapflights users on 2/22. 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.
Fri 3/215:30 amBWI - DMK
3 stops35h 40mMultiple Airlines
Mon 3/247:00 amDMK - BWI
3 stops46h 11mMultiple Airlines
Deal found 2/22$1,068
This FlightHub deal was found by Cheapflights users on 2/23. 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 3/227:10 pmIAD - BKK
1 stop31h 30mSAUDIA
Sat 3/293:20 pmBKK - IAD
2 stops35h 25mSAUDIA
Deal found 2/23$1,073
This oojo deal was found by Cheapflights users on 2/22. 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 3/911:35 amIAD - BKK
1 stop20h 10mQatar Airways
Sun 3/238:05 pmBKK - IAD
2 stops31h 50mQatar Airways
Deal found 2/22$1,103
This China Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 3/105:25 pmDCA - BKK
2 stops32h 40mMultiple Airlines
Tue 3/182:05 pmBKK - DCA
2 stops37h 50mMultiple Airlines
Deal found 2/22$1,105
This oojo deal was found by Cheapflights users on 2/22. 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 3/38:40 pmIAD - BKK
2 stops27h 50mEthiopian Air
Tue 3/111:35 amBKK - IAD
2 stops29h 15mEthiopian Air
Deal found 2/22$1,137
This oojo deal was found by Cheapflights users on 2/23. 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 3/185:15 pmDCA - BKK
2 stops30h 25mCathay Pacific
Mon 3/317:00 pmBKK - DCA
2 stops36h 59mCathay Pacific
Deal found 2/23$1,142

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 February 23, 2025.

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 4/29

10:05 pm-6:35 pm

1 stop33h 30m

Bangkok Suvarnabhumi

Mon 5/12

2:55 am-4:35 pm

1 stop24h 40m

$945

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Wed 3/26

5:30 am-11:35 pm

2 stops31h 05m

Bangkok Suvarnabhumi

Tue 4/1

5:05 am-12:12 am

3 stops30h 07m

$961

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 3/22

5:35 pm-6:05 pm

2 stops37h 30m

Bangkok Suvarnabhumi

Fri 3/28

1:30 am-3:10 pm

1 stop24h 40m

$981

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/29

12:30 pm-3:25 pm

1 stop39h 55m

Bangkok Suvarnabhumi

Wed 5/14

6:45 am-7:45 pm

1 stop24h 00m

$996

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/8

6:22 pm-9:45 am

2 stops28h 23m

Bangkok Suvarnabhumi

Tue 4/15

5:30 pm-5:34 am

2 stops23h 04m

$1,020

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sat 3/15

10:30 pm-4:10 am

2 stops42h 40m

Bangkok Don Mueang Intl

Mon 3/31

8:35 pm-4:35 pm

2 stops55h 00m

$1,038

BaltimoreBangkok

BWI - DMK

BWIDMK

Baltimore/Washington

Fri 3/21

5:30 am-4:10 am

3 stops35h 40m

Bangkok Don Mueang Intl

Mon 3/24

7:00 am-6:11 pm

3 stops46h 11m

$1,068

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 3/22

7:10 pm-1:40 pm

1 stop31h 30m

Bangkok Suvarnabhumi

Sat 3/29

3:20 pm-3:45 pm

2 stops35h 25m

$1,073

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 3/9

11:35 am-6:45 pm

1 stop20h 10m

Bangkok Suvarnabhumi

Sun 3/23

8:05 pm-4:55 pm

2 stops31h 50m

$1,103

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 3/10

5:25 pm-1:05 pm

2 stops32h 40m

Bangkok Suvarnabhumi

Tue 3/18

2:05 pm-4:55 pm

2 stops37h 50m

$1,105

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 56 results
1
2
3
...
6

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 February 14, 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 $976). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,580). 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 February 23, 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 February 23, 2025.
See what other customers who have flown with STARLUX Airlines, 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.
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,037 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA
8.4
Very good
836 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

China Airlines
8.2
Very good
723 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 $945. Additional round-trip tickets that might be worth considering are offered by Air China and Turkish Airlines, with the lowest prices starting at $981 and $996, respectively. Users have found that Etihad Airways is 27% 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 $547. Air India flights start at $560 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. 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 $29 per day.

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

    Namdaemun Market, Myeongdong Cathedral, and Dongdaemun Market are the most popular attractions in Seoul if you're in need of something to do during your layover. Namdaemun Market, Myeongdong Cathedral and Dongdaemun Market are located about 29.8 mi, 30.4 mi, and 31.6 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 $45 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 $976). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,580). 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.

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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$683Average$826FlexibilityNo cancel feeOn-time86%
Air IndiaCheapest$700Average$827FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$920Average$1,088FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$933Average$1,170FlexibilityNo cancel feeOn-time75%
Alaska AirlinesCheapest$936Average$1,261FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$952Average$1,192FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$992Average$1,165FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$1,065Average$1,419FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,068Average$1,589FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$1,134Average$1,357FlexibilityNo cancel feeOn-time72%
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.