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Cheap flights from Bangkok to Washington, D.C. from ฿20,935

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
26 Aug — 2 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 27 July 2026.

Sun 13/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 20/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 25/7฿29,181
Thu 17/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 20/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 22/7฿30,527
Tue 22/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 22/7฿32,446
Mon 7/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 14/906:13
IAD
-
BKK
2 stops35h 22m
United Airlines
Deal found 24/7฿34,095
Wed 12/809:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Thu 20/815:40
IAD
-
BKK
2 stops25h 55m
United Airlines
Deal found 23/7฿34,129
Tue 20/1009:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 25/1006:11
IAD
-
BKK
2 stops35h 59m
United Airlines
Deal found 24/7฿34,196
Mon 5/1009:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 19/1006:10
IAD
-
BKK
2 stops29h 05m
United Airlines
Deal found 23/7฿34,230
Mon 21/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 9/308:35
IAD
-
BKK
2 stops32h 35m
United Airlines
Deal found 21/7฿34,263
Mon 7/907:00
BKK
-
DCA
2 stops26h 13m
United Airlines
Mon 14/913:04
DCA
-
BKK
2 stops28h 31m
United Airlines
Deal found 23/7฿34,364
Sun 13/907:00
BKK
-
DCA
2 stops27h 59m
United Airlines
Sun 20/913:10
DCA
-
BKK
3 stops33h 25m
United Airlines
Deal found 25/7฿34,432
Sun 13/907:00
BKK
-
IAD
2 stops39h 24m
United Airlines
Sun 20/917:15
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 25/7฿34,432
Mon 5/1007:00
BKK
-
DCA
2 stops25h 05m
United Airlines
Mon 19/1007:46
DCA
-
BKK
2 stops27h 29m
United Airlines
Deal found 23/7฿34,465

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 27 July 2026.

Round-trip from

฿29,181

One-way from

฿20,935

Popular in

April

Cheapest in

October

Average price

฿45,067
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 13/9-20/9
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
12/9
  • 12/9
  • 3 total stops
  • 52h 55m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (฿181,959 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿63,202 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 27 July 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 - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 13/9

07:00-22:13

2 stops26h 13m

Washington, D.C. Reagan-National

Sun 20/9

20:40-04:35

2 stops44h 55m

฿34,432

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 12/8

21:35-15:50

1 stop29h 15m

Washington, D.C. Dulles Intl

Thu 20/8

13:10-04:35

2 stops28h 25m

฿34,566

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 19/11

07:10-20:43

2 stops25h 33m

Washington, D.C. Reagan-National

Mon 23/11

12:57-00:20

3 stops47h 23m

฿34,600

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 20/11

07:10-11:46

2 stops40h 36m

Washington, D.C. Dulles Intl

Mon 23/11

06:40-11:30

2 stops40h 50m

฿35,744

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 8/9

07:00-00:44

2 stops28h 44m

Washington, D.C. Dulles Intl

Tue 6/10

12:35-04:35

1 stop29h 00m

฿35,811

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 7/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Mon 21/9

09:30-04:35

2 stops32h 05m

฿35,879

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 14/12

09:10-16:01

2 stops42h 51m

Washington, D.C. Dulles Intl

Tue 29/12

12:20-11:30

2 stops35h 10m

฿36,283

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 20/10

15:45-18:09

1 stop37h 24m

Washington, D.C. Reagan-National

Sun 25/10

10:30-05:10

2 stops31h 40m

฿36,586

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 23/8

15:45-09:23

3 stops28h 38m

Washington, D.C. Dulles Intl

Sun 30/8

09:00-04:35

2 stops32h 35m

฿37,528

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 23/8

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Sun 30/8

07:48-23:55

2 stops29h 07m

฿37,595

Flights are sorted by cheapest return flights first.

Deals found on 26/7

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, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿35,037). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿43,014). 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 ฿44,024 and ฿73,945 in September.
The cheapest return price found within the last 5 days was ฿29,181 on ซาอุเดียแอร์ไลน์ (13 Sep–20 Sep).

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 26h 13m. Fly via United Airlines, ANA, or Japan Airlines to get the fastest option. Airlines will cover a distance of 14157 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 ฿27,537, 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 ฿33,574 and ฿33,936, respectively. These flights start at 36% 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 - Baltimore/Washington.

  • 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, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿35,037). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿43,014). 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 Reagan-National flights
Chiang Mai to Dulles Intl 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 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,537Average฿35,530FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿33,574Average฿33,979FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,936Average฿37,094FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Qatar AirwaysCheapest฿37,832Average฿42,179FlexibilityNo 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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