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Cheap flights from Bangkok to Washington, D.C. from ฿20,144

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
11 Jul — 18 Jul1
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 11 June 2026.

Sun 20/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 27/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 9/6฿29,854
Sun 20/915:45
BKK
-
IAD
3 stops38h 38m
United Airlines
Sun 27/922:13
IAD
-
BKK
2 stops48h 22m
United Airlines
Deal found 9/6฿29,887
Wed 17/609:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Wed 24/606:33
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 10/6฿30,644
Wed 17/609:35
BKK
-
DCA
2 stops46h 34m
United Airlines
Wed 24/606:00
DCA
-
BKK
2 stops35h 35m
United Airlines
Deal found 10/6฿30,874
Tue 9/609:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 16/606:33
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 7/6฿30,874
Wed 10/607:00
BKK
-
IAD
2 stops25h 00m
United Airlines
Wed 9/912:35
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 8/6฿31,170
Tue 23/609:35
BKK
-
DCA
2 stops47h 18m
United Airlines
Mon 29/608:25
DCA
-
BKK
2 stops33h 10m
United Airlines
Deal found 10/6฿31,269
Tue 23/609:35
BKK
-
IAD
2 stops61h 17m
United Airlines
Sun 5/706:33
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 10/6฿31,269
Tue 7/709:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Wed 22/722:29
IAD
-
BKK
2 stops38h 26m
United Airlines
Deal found 8/6฿31,368
Thu 25/609:35
BKK
-
DCA
2 stops46h 35m
United Airlines
Wed 15/715:10
DCA
-
BKK
2 stops45h 45m
United Airlines
Deal found 8/6฿31,401
Tue 7/709:35
BKK
-
DCA
2 stops47h 18m
United Airlines
Wed 22/711:57
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 8/6฿31,467
Wed 17/607:00
BKK
-
DCA
2 stops25h 53m
ANA
Wed 24/609:30
DCA
-
BKK
2 stops32h 05m
ANA
Deal found 10/6฿32,882

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 11 June 2026.

Round-trip from

฿29,854

One-way from

฿20,144

Popular in

April

Cheapest in

October

Average price

฿35,877
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 20/9-27/9
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
1/9
  • 1/9
  • 2 total stops
  • 24h 00m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (฿277,799 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿70,834 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 11 June 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

Tue 15/9

15:45-11:26

3 stops30h 41m

Washington, D.C. Dulles Intl

Tue 10/11

08:35-05:10

2 stops32h 35m

฿31,730

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 14/9

15:45-11:26

3 stops30h 41m

Washington, D.C. Dulles Intl

Mon 9/11

10:08-05:10

2 stops31h 02m

฿31,730

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 24/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Wed 11/11

13:05-11:25

3 stops34h 20m

฿35,844

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 24/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 10/11

13:05-05:10

2 stops28h 05m

฿35,877

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 7/7

07:00-21:10

2 stops25h 10m

Washington, D.C. Reagan-National

Mon 27/7

11:57-09:35

3 stops34h 38m

฿36,239

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 24/6

07:00-21:53

2 stops25h 53m

Washington, D.C. Reagan-National

Sat 18/7

17:59-09:35

2 stops28h 36m

฿37,622

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 14/9

09:35-20:09

2 stops45h 34m

Washington, D.C. Reagan-National

Mon 9/11

14:00-05:10

2 stops27h 10m

฿38,214

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 22/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Wed 5/8

09:10-09:35

2 stops37h 25m

฿39,728

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 22/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Mon 18/1

11:10-05:10

1 stop30h 00m

฿39,728

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 22/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Thu 12/11

06:30-00:20

2 stops29h 50m

฿39,827

Flights are sorted by cheapest return flights first.

Deals found on 9/6

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 ฿15,536). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,161). 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 17 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.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 11 June 2026.
Get a feel of what it's like to fly with United Airlines from Bangkok to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,805 reviews
Check prices

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,805 reviews
United Airlines
7.4
Good
9,805 reviews
Check prices

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 30h 41m. Fly via United Airlines, ANA, 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 ฿31,819, 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 ฿32,833 and ฿33,188, respectively. These flights start at 19% 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 - Washington, D.C. Reagan-National 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, April is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of ฿15,536). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,161). 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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,819Average฿33,437FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,833Average฿33,229FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,188Average฿35,829FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿34,773Average฿37,868FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿36,997Average฿40,580FlexibilityNo 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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