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Cheap flights from Bangkok to Washington, D.C. from ฿19,128

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
10 May — 17 May1
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 10 April 2026.

Thu 1/1009:35
BKK
-
IAD
2 stops45h 58m
United Airlines
Mon 5/1012:35
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 7/4฿25,984
Wed 26/807:00
BKK
-
IAD
2 stops25h 09m
United Airlines
Wed 9/912:35
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 5/4฿26,016
Tue 25/807:00
BKK
-
IAD
2 stops25h 09m
United Airlines
Fri 28/809:00
IAD
-
BKK
2 stops37h 35m
United Airlines
Deal found 6/4฿26,144
Tue 25/807:00
BKK
-
DCA
2 stops25h 53m
United Airlines
Fri 28/808:30
DCA
-
BKK
2 stops28h 25m
United Airlines
Deal found 6/4฿26,273
Mon 6/709:35
BKK
-
IAD
2 stops46h 26m
United Airlines
Wed 15/722:20
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/4฿26,401
Sun 12/402:30
BKK
-
IAD
1 stop24h 40m
Multiple Airlines
Sun 26/414:05
IAD
-
BKK
1 stop41h 55m
Multiple Airlines
Deal found 7/4฿32,424
Mon 1/615:10
BKK
-
DCA
2 stops39h 56m
Multiple Airlines
Mon 29/618:59
DCA
-
BKK
2 stops29h 21m
Multiple Airlines
Deal found 5/4฿32,456
Thu 1/1016:45
BKK
-
BWI
2 stops24h 45m
Multiple Airlines
Sun 11/1018:11
BWI
-
BKK
2 stops29h 14m
Multiple Airlines
Deal found 6/4฿32,841
Thu 1/1015:45
BKK
-
DCA
3 stops29h 38m
United Airlines
Mon 5/1006:30
DCA
-
BKK
2 stops35h 05m
United Airlines
Deal found 7/4฿33,065
Mon 1/619:35
BKK
-
IAD
1 stop34h 55m
Multiple Airlines
Fri 28/821:00
IAD
-
BKK
1 stop29h 25m
Multiple Airlines
Deal found 8/4฿33,161
Tue 9/601:35
BKK
-
DCA
2 stops29h 25m
Multiple Airlines
Wed 12/818:59
DCA
-
BKK
2 stops29h 11m
Multiple Airlines
Deal found 6/4฿33,193
Tue 10/1108:15
BKK
-
DCA
2 stops40h 04m
แอร์แคนาดา
Sun 29/1106:00
DCA
-
BKK
2 stops36h 30m
แอร์แคนาดา
Deal found 7/4฿33,417

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 10 April 2026.

Round-trip from

฿25,984

One-way from

฿19,128

Popular in

April

Cheapest in

October

Average price

฿59,337
United Airlines
  • United Airlines
  • 1/10-5/10
  • 3 total stops
  • 74h 58m total
  • Bangkok to Washington, D.C.
Search Deals
9/5
  • 9/5
  • 3 total stops
  • 54h 08m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿249,635 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿65,475 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 10 April 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

Thu 1/10

09:35-17:48

2 stops43h 13m

Washington, D.C. Reagan-National

Mon 5/10

11:30-09:35

3 stops35h 05m

฿33,610

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 25/8

15:45-10:17

3 stops29h 32m

Washington, D.C. Reagan-National

Fri 28/8

11:30-09:35

3 stops35h 05m

฿33,962

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 8/7

07:00-21:53

2 stops25h 53m

Washington, D.C. Reagan-National

Wed 15/7

08:30-23:55

2 stops28h 25m

฿35,948

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 7/6

19:45-18:10

1 stop33h 25m

Washington, D.C. Dulles Intl

Wed 7/10

11:15-19:05

1 stop20h 50m

฿37,326

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 6/7

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Wed 15/7

11:57-09:35

3 stops34h 38m

฿37,903

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 2/6

09:50-10:00

2 stops35h 10m

Washington, D.C. Reagan-National

Wed 26/8

10:00-21:45

2 stops24h 45m

฿38,544

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 10/6

23:30-17:30

2 stops29h 00m

Washington, D.C. Reagan-National

Wed 9/9

10:00-23:35

2 stops26h 35m

฿39,152

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 31/5

02:35-00:13

2 stops32h 38m

Washington, D.C. Dulles Intl

Mon 29/6

08:27-01:05

2 stops29h 38m

฿39,152

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 23/6

15:45-11:59

3 stops31h 14m

Washington, D.C. Reagan-National

Sun 13/9

18:00-09:35

3 stops28h 35m

฿39,377

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 23/6

15:45-11:01

3 stops30h 16m

Washington, D.C. Reagan-National

Tue 15/9

18:00-09:35

3 stops28h 35m

฿39,377

Flights are sorted by cheapest return flights first.

Deals found on 9/4

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 ฿31,110). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,429). 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.?

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 32h 38m. Fly via United Airlines, Qatar Airways, or เดลต้า 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 ฿31,090, 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 ฿31,960 and ฿32,399, respectively. These flights start at 20% 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 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 ฿31,110). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,429). 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 10 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,090Average฿32,548FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿31,960Average฿32,346FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿32,399Average฿34,942FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿33,946Average฿42,642FlexibilityNo cancel feeOn-time80%
Search ANA 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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