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Cheap flights from Bangkok to Washington, D.C. from ฿19,514

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
13 Aug — 20 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 14 July 2026.

Tue 22/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 13/7฿30,661
Fri 25/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 27/1010:35
IAD
-
BKK
2 stops31h 35m
United Airlines
Deal found 10/7฿34,108
Thu 27/807:00
BKK
-
IAD
2 stops33h 55m
United Airlines
Fri 28/808:20
IAD
-
BKK
2 stops33h 15m
United Airlines
Deal found 10/7฿34,142
Wed 15/709:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 20/1017:20
IAD
-
BKK
3 stops29h 15m
United Airlines
Deal found 14/7฿34,175
Sat 26/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Wed 28/1008:16
IAD
-
BKK
2 stops29h 04m
United Airlines
Deal found 10/7฿34,209
Wed 14/1009:35
BKK
-
IAD
1 stop41h 00m
United Airlines
Wed 28/1015:34
IAD
-
BKK
3 stops32h 56m
United Airlines
Deal found 11/7฿34,242
Mon 13/709:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Mon 20/717:42
IAD
-
BKK
3 stops28h 53m
United Airlines
Deal found 12/7฿34,309
Thu 27/807:00
BKK
-
DCA
2 stops26h 30m
United Airlines
Fri 28/809:30
DCA
-
BKK
2 stops32h 05m
United Airlines
Deal found 10/7฿34,343
Thu 19/1107:10
BKK
-
IAD
2 stops29h 26m
United Airlines
Mon 23/1122:23
IAD
-
BKK
2 stops42h 47m
United Airlines
Deal found 14/7฿34,343
Thu 12/1109:10
BKK
-
DCA
2 stops24h 43m
United Airlines
Tue 9/310:30
DCA
-
BKK
2 stops30h 40m
United Airlines
Deal found 11/7฿34,410
Thu 12/1109:10
BKK
-
IAD
2 stops27h 20m
United Airlines
Tue 9/318:50
IAD
-
BKK
2 stops28h 40m
United Airlines
Deal found 11/7฿34,410
Wed 14/1007:00
BKK
-
DCA
2 stops26h 30m
United Airlines
Wed 28/1008:30
DCA
-
BKK
2 stops28h 50m
United Airlines
Deal found 10/7฿34,443

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 14 July 2026.

Round-trip from

฿30,661

One-way from

฿19,514

Popular in

April

Cheapest in

October

Average price

฿36,318
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 22/9-18/10
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
8/9
  • 8/9
  • 3 total stops
  • 34h 25m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿216,809 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿66,200 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 14 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 27/8

07:00-05:55

2 stops33h 55m

Washington, D.C. Dulles Intl

Fri 28/8

08:20-04:35

2 stops33h 15m

฿34,142

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 19/11

07:10-00:36

2 stops29h 26m

Washington, D.C. Dulles Intl

Mon 23/11

22:23-05:10

2 stops42h 47m

฿34,343

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 12/11

09:10-21:53

2 stops24h 43m

Washington, D.C. Reagan-National

Tue 9/3

10:30-05:10

2 stops30h 40m

฿34,410

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 12/11

09:10-21:04

2 stops23h 54m

Washington, D.C. Dulles Intl

Tue 9/3

12:20-05:10

1 stop28h 50m

฿34,410

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 28/8

07:00-20:48

2 stops24h 48m

Washington, D.C. Dulles Intl

Wed 9/9

06:15-04:35

2 stops35h 20m

฿34,577

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 23/10

15:45-11:55

3 stops31h 10m

Washington, D.C. Dulles Intl

Mon 26/10

22:23-11:30

2 stops50h 07m

฿34,811

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 21/9

15:45-12:08

3 stops31h 23m

Washington, D.C. Reagan-National

Sun 18/10

06:00-04:35

2 stops35h 35m

฿34,845

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 21/9

15:45-13:55

3 stops33h 10m

Washington, D.C. Dulles Intl

Sun 18/10

17:45-09:35

2 stops28h 50m

฿34,845

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 18/8

09:35-13:55

2 stops39h 20m

Washington, D.C. Dulles Intl

Tue 13/10

17:45-09:35

2 stops28h 50m

฿35,882

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fri 23/10

15:45-10:44

3 stops29h 59m

Washington, D.C. Reagan-National

Mon 26/10

15:30-05:10

2 stops26h 40m

฿36,150

Flights are sorted by cheapest return flights first.

Deals found on 11/7

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, April is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿15,799). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,790). 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 24h 55m. Fly via United Airlines, Qatar Airways, or Emirates 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 ฿27,386, 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 ฿33,389 and ฿33,750, 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 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, April is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿15,799). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,790). 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 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 14 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,386Average฿35,351FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿33,389Average฿33,792FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,750Average฿36,890FlexibilityNo 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!

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