Find flights
When to book
FAQs

Cheap flights from Bangkok to Washington, D.C. from ฿20,596

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
19 Aug — 26 Aug1
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 20 July 2026.

Thu 15/1015:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 18/7฿28,291
Thu 3/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Fri 4/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 19/7฿29,198
Tue 22/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 16/7฿30,743
Tue 1/909:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 8/915:40
IAD
-
BKK
2 stops25h 55m
United Airlines
Deal found 17/7฿34,103
Thu 27/809:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Fri 28/813:10
IAD
-
BKK
3 stops33h 25m
United Airlines
Deal found 15/7฿34,137
Tue 15/909:35
BKK
-
IAD
2 stops32h 18m
United Airlines
Tue 29/913:10
IAD
-
BKK
3 stops33h 25m
United Airlines
Deal found 20/7฿34,305
Tue 1/907:00
BKK
-
DCA
2 stops25h 05m
United Airlines
Tue 8/914:00
DCA
-
BKK
2 stops27h 35m
United Airlines
Deal found 17/7฿34,338
Thu 19/1107:10
BKK
-
IAD
2 stops34h 18m
United Airlines
Mon 23/1122:23
IAD
-
BKK
2 stops42h 47m
United Airlines
Deal found 18/7฿34,338
Sun 13/907:00
BKK
-
DCA
2 stops26h 30m
United Airlines
Tue 22/915:30
DCA
-
BKK
3 stops31h 05m
United Airlines
Deal found 17/7฿34,372
Tue 8/909:35
BKK
-
IAD
2 stops46h 45m
United Airlines
Tue 6/1012:58
IAD
-
BKK
2 stops47h 57m
United Airlines
Deal found 19/7฿34,406
Fri 4/907:00
BKK
-
DCA
2 stops27h 59m
United Airlines
Mon 14/915:30
DCA
-
BKK
2 stops26h 05m
United Airlines
Deal found 15/7฿34,473
Tue 22/907:00
BKK
-
IAD
2 stops28h 44m
United Airlines
Sun 18/1012:35
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 19/7฿34,540

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 20 July 2026.

Round-trip from

฿28,291

One-way from

฿20,596

Popular in

April

Cheapest in

October

Average price

฿36,455
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 15/10-18/10
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
8/11
  • 8/11
  • 3 total stops
  • 55h 00m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿218,468 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿66,690 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 20 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 - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 15/10

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 18/10

06:10-04:35

2 stops35h 25m

฿34,103

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 1/9

07:00-21:05

2 stops25h 05m

Washington, D.C. Reagan-National

Tue 8/9

14:00-04:35

2 stops27h 35m

฿34,338

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 13/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Tue 22/9

07:46-04:35

2 stops33h 49m

฿34,372

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 8/9

09:35-21:20

2 stops46h 45m

Washington, D.C. Dulles Intl

Tue 6/10

12:58-23:55

2 stops47h 57m

฿34,406

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 27/8

15:45-09:23

3 stops28h 38m

Washington, D.C. Dulles Intl

Fri 28/8

13:00-09:35

2 stops33h 35m

฿34,473

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 7/9

15:45-09:28

3 stops28h 43m

Washington, D.C. Dulles Intl

Thu 10/9

13:00-09:35

2 stops33h 35m

฿34,641

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 28/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Thu 15/10

06:45-23:55

2 stops30h 10m

฿35,649

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 15/10

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Sun 18/10

11:57-04:35

2 stops29h 38m

฿35,682

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 18/8

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 25/8

13:13-09:35

3 stops33h 22m

฿37,463

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 22/8

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Sat 12/9

16:43-04:35

2 stops48h 52m

฿37,497

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 ฿35,716). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿43,612). 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.?

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 25h 49m. Fly via United Airlines, Japan Airlines, or Emirates to get the fastest option. Airlines will cover a distance of 14120 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 ฿27,490, 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 ฿33,516 and ฿33,878, respectively. These flights start at 35% 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 Suvarnabhumi - Baltimore/Washington and Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl.

  • 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 ฿35,716). Flying from Bangkok to Washington, D.C. in August is currently the most expensive (average of ฿43,612). 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 3 airlines flying from Bangkok to Washington, D.C.

Discover the top 3 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 20 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,490Average฿35,485FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿33,516Average฿33,920FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,878Average฿37,030FlexibilityNo cancel feeOn-time81%
Search Korean Air 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!

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.