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$387+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 27 days in advance, depart on a Saturday or Tuesday and return on a Sunday

Cheap 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 December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:20 amIAD - BKK
2 stops32h 50mUnited Airlines
Wed 12/319:10 amBKK - IAD
2 stops32h 12mUnited Airlines
Deal found 12/14$1,133
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:00 pmDCA - BKK
3 stops48h 10mUnited Airlines
Thu 1/87:10 amBKK - DCA
2 stops26h 42mUnited Airlines
Deal found 12/15$1,176
This FlightHub deal was found by Cheapflights users on 12/14. 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 12/282:35 pmIAD - BKK
1 stop20h 50mEtihad Airways
Sat 1/317:35 pmBKK - IAD
2 stops49h 30mEtihad Airways
Deal found 12/14$1,212
This KAYAK deal was found by Cheapflights users on 12/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:35 pmIAD - BKK
1 stop39h 25mEtihad Airways
Wed 1/218:55 amBKK - IAD
1 stop36h 10mEtihad Airways
Deal found 12/13$1,228
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:40 pmIAD - BKK
3 stops34h 45mUnited Airlines
Tue 1/134:55 pmBKK - IAD
2 stops44h 04mUnited Airlines
Deal found 12/13$1,232
This Ovago deal was found by Cheapflights users on 12/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:20 pmIAD - BKK
1 stop30h 10mANA
Sun 12/219:10 amBKK - IAD
1 stop36h 00mANA
Deal found 12/14$1,244
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:59 pmDCA - BKK
2 stops40h 21mUnited Airlines
Wed 1/147:10 amBKK - DCA
2 stops24h 22mUnited Airlines
Deal found 12/13$1,249
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:10 pmIAD - BKK
2 stops38h 10mUnited Airlines
Wed 1/147:10 amBKK - IAD
2 stops26h 03mUnited Airlines
Deal found 12/13$1,249
This United Airlines deal was found by Cheapflights users on 12/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:08 pmIAD - BKK
2 stops43h 02mUnited Airlines
Tue 12/234:55 pmBKK - IAD
3 stops37h 55mUnited Airlines
Deal found 12/12$1,259
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:59 pmDCA - BKK
2 stops40h 21mUnited Airlines
Tue 1/134:55 pmBKK - DCA
2 stops40h 57mUnited Airlines
Deal found 12/13$1,266
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:10 pmIAD - BKK
2 stops38h 10mUnited Airlines
Tue 1/134:55 pmBKK - IAD
2 stops44h 04mUnited Airlines
Deal found 12/13$1,266
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 pmIAD - BKK
2 stops29h 25mUnited Airlines
Thu 1/154:55 pmBKK - IAD
2 stops39h 59mUnited Airlines
Deal found 12/14$1,267

Find 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 December 15, 2025.

Round-trip from

$876
(oojo)

One-way from

$387
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,705
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. 9% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 15, 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

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 1/27

6:05 am-11:20 pm

2 stops29h 15m

Bangkok Suvarnabhumi

Wed 2/4

12:55 am-12:00 pm

2 stops23h 05m

$928

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 1/27

6:05 am-11:20 pm

2 stops29h 15m

Bangkok Suvarnabhumi

Wed 2/4

9:40 am-11:26 pm

2 stops25h 46m

$928

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 1/27

6:05 am-11:20 pm

2 stops29h 15m

Bangkok Suvarnabhumi

Mon 2/2

12:55 am-12:00 pm

2 stops23h 05m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/27

6:00 am-11:20 pm

2 stops29h 20m

Bangkok Suvarnabhumi

Wed 2/4

12:55 am-4:46 pm

2 stops27h 51m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/29

7:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Wed 2/11

12:55 am-11:50 am

2 stops22h 55m

$928

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/26

6:00 am-11:20 pm

2 stops29h 20m

Bangkok Suvarnabhumi

Tue 2/3

12:55 am-4:29 pm

2 stops27h 34m

$933

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/7

1:00 pm-4:35 am

2 stops28h 35m

Bangkok Suvarnabhumi

Wed 4/22

7:00 am-9:04 pm

2 stops25h 04m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/7

12:40 pm-9:45 am

3 stops34h 05m

Bangkok Suvarnabhumi

Tue 4/21

9:35 am-5:33 am

2 stops30h 58m

$937

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 1/27

6:00 am-11:20 pm

2 stops29h 20m

Bangkok Suvarnabhumi

Tue 2/3

9:40 am-11:26 pm

2 stops25h 46m

$938

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 2/16

8:20 am-5:10 am

2 stops32h 50m

Bangkok Suvarnabhumi

Tue 3/24

4:55 pm-3:59 pm

3 stops34h 04m

$944

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

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 December 12, 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 27 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $628). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,092). 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 December 15, 2025.

It’s typically best to fly out from Washington, D.C. to Bangkok in the evening. Doing so could potentially save you 28% on the flight price compared to flying at noon, 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 Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. to Bangkok?

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 December 15, 2025.
Peruse reviews from past customers who have flown with Qatar Airways, Etihad Airways, and United Airlines from Washington, D.C. to Bangkok to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,681 reviews
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Etihad Airways
7.4
Good
1,332 reviews
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
United Airlines
7.4
Good
9,092 reviews
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Turkish Airlines
7.3
Good
4,097 reviews
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
JetBlue
7.2
Good
2,895 reviews
Qatar Airways
7.4
Good
3,681 reviews

Comfort

7.4

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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.

  • How long is the flight from Washington, D.C. to Bangkok?

    Delta, Korean Air, and United Airlines can get you from Washington, D.C. to Bangkok in just under 23h 25m. Your travel time can differ by up to 5h 50m. There are 8792 mi between Washington, D.C. and Bangkok. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. to Bangkok round-trip?

    Flying on United Airlines is currently your cheapest option to Bangkok, with prices starting at $216. Additional round-trip tickets that might be worth considering are offered by Air China and Air Canada, with the lowest prices starting at $565 and $605, respectively. Users have found that United Airlines is 81% 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 Korean Air, which is currently one of the cheapest options available, starting at $394. Etihad Airways flights start at $401 while deals on Turkish Airlines start at $423 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. Abu Dhabi comes in third as the most popular layover location on Washington, D.C. to Bangkok flights.

  • 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, Beyazit Meydani, and Laleli Camii. Taksim Square, Beyazit Meydani, and Laleli Camii can be visited by traveling about 20.8 mi, 21.7 mi, and 21.5 mi respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $32 per day.

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

    Emirates Palace, Emirates Park Zoo, and Ferrari World Abu Dhabi are the most popular attractions in Abu Dhabi if you're in need of something to do during your layover. Emirates Palace, Emirates Park Zoo and Ferrari World Abu Dhabi are located about 21.1 mi, 7.9 mi, and 4.5 mi, respectively from Abu Dhabi Zayed Intl if you are interested in checking them out. Travelers in need of a car in Abu Dhabi 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 Jeddah the least frequently. Jeddah is followed by Tokyo in terms of the least popular layover location on flights from Washington, D.C. to Bangkok. Tokyo is followed by Seoul 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Bangkok (average of $628). Flying from Washington, D.C. to Bangkok in June is currently the most expensive (average of $1,092). 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$216Average$1,145FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$565Average$786FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$702Average$886FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$787Average$1,027FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$802Average$1,205FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$840Average$1,245FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$873Average$1,151FlexibilityNo cancel feeOn-time77%
ANACheapest$895Average$1,196FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$1,792FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,420FlexibilityNo cancel feeOn-time75%

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