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Cheap flights from Bangkok to Washington, D.C. from ฿19,073

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
24 Apr — 1 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 25 March 2026.

Thu 27/809:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Thu 10/906:15
IAD
-
BKK
2 stops30h 40m
United Airlines
Deal found 22/3฿25,919
Fri 26/609:35
BKK
-
IAD
2 stops48h 44m
United Airlines
Fri 28/806:30
IAD
-
BKK
2 stops35h 05m
United Airlines
Deal found 21/3฿25,985
Wed 2/909:35
BKK
-
DCA
2 stops46h 08m
United Airlines
Sun 6/908:30
DCA
-
BKK
2 stops28h 25m
United Airlines
Deal found 22/3฿26,082
Thu 24/907:00
BKK
-
IAD
2 stops24h 33m
United Airlines
Mon 28/917:30
IAD
-
BKK
2 stops29h 05m
United Airlines
Deal found 22/3฿26,082
Tue 8/915:45
BKK
-
IAD
3 stops30h 41m
United Airlines
Thu 17/920:30
IAD
-
BKK
2 stops26h 05m
United Airlines
Deal found 23/3฿26,343
Tue 12/522:45
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Wed 3/613:20
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Deal found 23/3฿29,506
Thu 14/519:35
BKK
-
IAD
1 stop34h 55m
Multiple Airlines
Fri 29/513:20
IAD
-
BKK
1 stop44h 50m
Multiple Airlines
Deal found 23/3฿29,538
Tue 28/422:45
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Sun 19/713:20
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Deal found 20/3฿30,353
Wed 7/1016:45
BKK
-
BWI
2 stops24h 36m
Multiple Airlines
Sun 18/1018:11
BWI
-
BKK
2 stops29h 14m
Multiple Airlines
Deal found 23/3฿32,799
Wed 7/1007:00
BKK
-
DCA
2 stops25h 53m
United Airlines
Sun 18/1007:30
DCA
-
BKK
2 stops34h 05m
United Airlines
Deal found 23/3฿32,864
Wed 3/609:50
BKK
-
DCA
2 stops24h 38m
เดลต้า
Thu 20/806:00
DCA
-
BKK
2 stops28h 45m
เดลต้า
Deal found 23/3฿32,994
Sun 17/509:50
BKK
-
DCA
2 stops24h 38m
เดลต้า
Wed 12/819:30
DCA
-
BKK
2 stops39h 15m
เดลต้า
Deal found 21/3฿33,092

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 25 March 2026.

Round-trip from

฿25,919

One-way from

฿19,073

Popular in

August

Cheapest in

October

Average price

฿45,612
United Airlines
  • United Airlines
  • 27/8-10/9
  • 3 total stops
  • 71h 55m total
  • Bangkok to Washington, D.C.
Search Deals
4/5
  • 4/5
  • 3 total stops
  • 52h 43m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (฿30,480 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿34,629 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 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

Wed 2/9

09:35-20:43

2 stops46h 08m

Washington, D.C. Reagan-National

Sun 6/9

08:30-23:55

2 stops28h 25m

฿26,082

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 18/6

09:35-16:26

2 stops41h 51m

Washington, D.C. Dulles Intl

Mon 20/7

06:33-04:35

2 stops35h 02m

฿32,505

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 26/6

09:35-23:19

2 stops48h 44m

Washington, D.C. Dulles Intl

Fri 28/8

12:15-04:35

1 stop29h 20m

฿32,766

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 17/5

15:45-21:06

3 stops40h 21m

Washington, D.C. Reagan-National

Wed 12/8

06:00-23:55

2 stops30h 55m

฿33,809

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 8/9

09:15-15:40

1 stop41h 25m

Washington, D.C. Dulles Intl

Thu 17/9

21:00-19:05

1 stop35h 05m

฿35,309

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/5

21:40-23:32

2 stops36h 52m

Washington, D.C. Dulles Intl

Wed 13/5

07:00-23:35

2 stops29h 35m

฿36,124

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 14/6

02:35-00:25

2 stops32h 50m

Washington, D.C. Dulles Intl

Tue 14/7

13:30-01:05

1 stop24h 35m

฿36,254

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Fri 24/4

20:50-15:45

2 stops29h 55m

Washington, D.C. Dulles Intl

Mon 4/5

15:10-04:40

2 stops26h 30m

฿38,961
Fastest return journey

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 1/6

09:50-00:13

2 stops25h 23m

Washington, D.C. Dulles Intl

Tue 30/6

07:00-21:45

2 stops27h 45m

฿39,710

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 23/5

06:45-11:35

1 stop39h 50m

Washington, D.C. Dulles Intl

Sun 7/6

13:20-09:45

1 stop33h 25m

฿40,199

Flights are sorted by cheapest return flights first.

Deals found on 24/3

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, May is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿31,168). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,070). 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.

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 36h 52m. 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 ฿31,636, 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 ฿32,522 and ฿32,873, respectively. These flights start at 16% 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, May is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿31,168). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,070). 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 5 airlines flying from Bangkok to Washington, D.C.

Discover the top 5 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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,636Average฿33,120FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,522Average฿32,914FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿32,873Average฿35,490FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿34,543Average฿43,392FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿36,646Average฿40,195FlexibilityNo 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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