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Cheap flights from Bangkok to Washington, D.C. from ฿18,326

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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
12 Sep — 19 Sep1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

Cheapest flights from Bangkok to Washington, D.C.
Explore the most affordable flight options available from Bangkok to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 August 2026.

Sun 4/1015:25 -
1 stop35h 20m
Sun 18/1018:50 -
1 stop31h 55m
Deal found 8/8฿27,191
Sun 13/915:25 -
1 stop35h 20m
Sun 20/918:50 -
1 stop31h 55m
Deal found 10/8฿27,688
Sat 19/1215:20 -
1 stop35h 25m
Fri 15/117:50 -
1 stop31h 50m
Deal found 10/8฿31,525
Thu 3/915:55 -
1 stop28h 50m
Wed 16/915:10 -
1 stop21h 45m
Deal found 10/8฿32,319
Fri 9/1021:00 -
1 stop23h 45m
Fri 16/1015:10 -
1 stop21h 45m
Deal found 12/8฿32,749
Sat 19/1220:50 -
1 stop24h 15m
Fri 15/114:35 -
1 stop28h 00m
Deal found 11/8฿32,914
Wed 26/809:35 -
2 stops47h 55m
Sat 29/810:30 -
3 stops36h 05m
Deal found 12/8฿34,171
Fri 13/1107:10 -
2 stops27h 20m
Wed 24/211:30 -
2 stops29h 40m
Deal found 11/8฿34,337
Thu 5/1109:10 -
2 stops43h 35m
Mon 9/1108:30 -
3 stops39h 00m
Deal found 8/8฿34,403
Sun 13/915:45 -
3 stops28h 10m
Sun 20/906:00 -
2 stops35h 35m
Deal found 12/8฿34,502
Sat 5/915:45 -
3 stops29h 14m
Sat 12/907:48 -
2 stops27h 27m
Deal found 8/8฿34,833
Tue 10/1109:40 -
2 stops24h 58m
Wed 24/209:40 -
2 stops32h 50m
Deal found 11/8฿36,288

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

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) to Washington, D.C. (WAS). 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 13 August 2026.

Round-trip from

฿27,191

One-way from

฿18,326

Popular in

August

Cheapest in

October

Average price

฿69,798
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 4/10-18/10
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
13/10
  • 13/10
  • 3 total stops
  • 59h 22m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿252,269 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿86,697 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bangkok to Washington, D.C. 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 17,341 searches. Data last updated 13 August 2026.
Use the filters below to find and compare flights from Bangkok to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Fri 5/2

01:15-13:50

1 stop24h 35m

Washington, D.C. Dulles Intl

Sun 14/2

17:50-13:40

1 stop31h 50m

฿31,723

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 15/11

20:50-09:05

1 stop24h 15m

Washington, D.C. Dulles Intl

Sat 27/2

14:35-18:00

1 stop39h 25m

฿33,973

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Thu 12/11

19:55-09:05

1 stop25h 10m

Washington, D.C. Dulles Intl

Sat 27/2

14:35-06:35

1 stop28h 00m

฿33,973

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 13/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 20/9

15:15-04:35

2 stops26h 20m

฿34,006

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Wed 23/9

21:00-09:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Sun 27/9

15:10-18:10

1 stop40h 00m

฿34,072

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Fri 5/2

07:10-16:56

2 stops45h 46m

Washington, D.C. Reagan-National

Sun 7/2

19:00-11:30

3 stops52h 30m

฿34,237

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sat 5/9

09:35-07:00

2 stops32h 25m

Washington, D.C. Dulles Intl

Sat 12/9

13:10-09:35

3 stops33h 25m

฿34,403

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 5/11

09:10-22:30

2 stops25h 20m

Washington, D.C. Reagan-National

Mon 9/11

13:05-05:10

2 stops28h 05m

฿34,436

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Sat 6/2

07:10-21:53

2 stops26h 43m

Washington, D.C. Reagan-National

Sun 14/2

14:00-05:10

2 stops27h 10m

฿34,469

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Sat 5/9

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Sat 12/9

07:48-22:15

2 stops27h 27m

฿34,833

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Bangkok to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Bangkok with our price prediction graph.
Estimated return 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 Bangkok to Washington, D.C.

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

Currently, July is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿34,866). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿42,871). 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.

How much does it cost for a return flight from Bangkok to Washington, D.C.?

Airfare is below average for this route at the moment.
Bangkok to Washington, D.C. flights typically cost between ฿43,268 and ฿73,734 in October.
The cheapest return price found within the last 5 days was ฿27,191 on ซาอุเดียแอร์ไลน์ (4 Oct–18 Oct).

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

The best time to book flights from Bangkok to Washington, D.C. is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

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

    There are many flights that can get you from Bangkok to Washington, D.C. in 24h 15m. Fly via ซาอุเดียแอร์ไลน์, เอทิฮัดแอร์เวย์, or United Airlines to get the fastest option. Airlines will cover a distance of 14149 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at ฿27,065, United Airlines will fly you from Bangkok to Washington, D.C. and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from เอทิฮัดแอร์เวย์ and Korean Air - these airlines can fly you to your destination from ฿32,997 and ฿33,354, respectively. These flights start at 37% lower than the current average price 3 months from now.

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

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

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿34,866). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿42,871). 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.

Alternative routes for Bangkok to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Dulles Intl flights
Chiang Mai to Reagan-National flights

Top 4 airlines flying from Bangkok to Washington, D.C.

Discover the top 4 airlines that operate flights from Bangkok to Washington, D.C.. 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 17,341 searches. Data last updated 13 August 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,065Average฿34,632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,997Average฿33,395FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,354Average฿36,457FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Qatar AirwaysCheapest฿36,078Average฿41,455FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Bangkok to Washington, D.C.?

Deals for Bangkok to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Bangkok to Washington, D.C..

Can Cheapflights find flights from Bangkok to Washington, D.C. with no change fees?

Yes, we can. To see specific flights from Bangkok to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Bangkok to Washington, D.C. become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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