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Cheap flights from Bangkok to Washington, D.C. from ฿20,562

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 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
5 Aug — 12 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 6 July 2026.

Thu 9/707:45
BKK
-
IAD
2 stops33h 37m
แอร์แคนาดา
Thu 23/709:55
IAD
-
BKK
2 stops25h 00m
แอร์แคนาดา
Deal found 2/7฿35,002
Sun 30/822:45
BKK
-
IAD
1 stop23h 05m
Multiple Airlines
Tue 8/915:10
IAD
-
BKK
1 stop34h 00m
Multiple Airlines
Deal found 5/7฿35,335
Thu 17/907:45
BKK
-
DCA
2 stops25h 05m
แอร์แคนาดา
Mon 21/909:40
DCA
-
BKK
2 stops32h 25m
แอร์แคนาดา
Deal found 2/7฿35,368
Thu 17/907:45
BKK
-
IAD
2 stops23h 40m
แอร์แคนาดา
Mon 21/908:29
IAD
-
BKK
1 stop33h 36m
แอร์แคนาดา
Deal found 2/7฿35,435
Thu 27/822:45
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Fri 28/813:20
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Deal found 5/7฿35,967
Tue 21/707:45
BKK
-
IAD
2 stops38h 27m
แอร์แคนาดา
Tue 28/722:14
IAD
-
BKK
2 stops43h 51m
แอร์แคนาดา
Deal found 3/7฿36,133
Thu 17/922:45
BKK
-
IAD
1 stop23h 05m
Multiple Airlines
Mon 21/915:10
IAD
-
BKK
1 stop28h 35m
Multiple Airlines
Deal found 2/7฿36,200
Fri 3/707:00
BKK
-
IAD
2 stops34h 22m
แอร์แคนาดา
Sat 25/716:20
IAD
-
BKK
2 stops25h 45m
แอร์แคนาดา
Deal found 2/7฿36,632
Thu 16/715:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 19/718:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 2/7฿36,666
Wed 8/713:10
BKK
-
IAD
2 stops28h 29m
Multiple Airlines
Wed 29/713:20
IAD
-
BKK
1 stop44h 50m
Multiple Airlines
Deal found 2/7฿36,799
Thu 27/807:55
BKK
-
IAD
2 stops32h 45m
Multiple Airlines
Fri 28/813:20
IAD
-
BKK
1 stop44h 50m
Multiple Airlines
Deal found 5/7฿36,832
Tue 29/909:35
BKK
-
DCA
2 stops47h 55m
United Airlines
Sat 3/1019:10
DCA
-
BKK
2 stops46h 25m
United Airlines
Deal found 1/7฿36,998

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 6 July 2026.

Round-trip from

฿35,335

One-way from

฿20,562

Popular in

April

Cheapest in

October

Average price

฿36,100
เอทิฮัดแอร์เวย์
  • เอทิฮัดแอร์เวย์
  • 30/8-8/9
  • 2 total stops
  • 57h 05m total
  • Bangkok to Washington, D.C.
Search Deals
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 30/10
  • 1 total stop
  • 34h 25m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿259,417 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿69,910 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 6 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 - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 29/9

09:35-22:30

2 stops47h 55m

Washington, D.C. Reagan-National

Sat 3/10

19:10-04:35

2 stops46h 25m

฿36,998

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 27/8

09:35-13:55

2 stops39h 20m

Washington, D.C. Dulles Intl

Fri 28/8

17:42-09:35

2 stops28h 53m

฿36,998

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 18/8

15:45-17:09

3 stops36h 24m

Washington, D.C. Reagan-National

Tue 25/8

08:20-04:35

2 stops33h 15m

฿37,531

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 18/10

15:45-11:55

3 stops31h 10m

Washington, D.C. Dulles Intl

Thu 29/10

13:20-11:30

2 stops35h 10m

฿38,130

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 16/7

09:35-15:50

1 stop41h 15m

Washington, D.C. Dulles Intl

Sun 19/7

15:39-09:35

3 stops30h 56m

฿38,296

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 17/9

07:45-21:50

2 stops25h 05m

Washington, D.C. Reagan-National

Mon 21/9

09:40-05:05

2 stops32h 25m

฿38,695

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 3/8

09:35-06:20

2 stops31h 45m

Washington, D.C. Dulles Intl

Mon 10/8

13:15-09:35

3 stops33h 20m

฿44,718

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 19/8

15:45-00:32

3 stops43h 47m

Washington, D.C. Dulles Intl

Wed 18/11

06:05-00:20

2 stops30h 15m

฿45,516

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 2/8

09:35-11:52

2 stops61h 17m

Washington, D.C. Dulles Intl

Sun 9/8

08:40-09:35

3 stops37h 55m

฿47,745

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 25/7

15:45-15:50

2 stops35h 05m

Washington, D.C. Dulles Intl

Sat 15/8

15:40-09:35

3 stops30h 55m

฿47,878

Flights are sorted by cheapest return flights first.

Deals found on 3/7

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 ฿15,704). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,564). 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.

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 6 July 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
9,938 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,938 reviews
United Airlines
7.4
Good
9,938 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 31h 30m. Fly via United Airlines, Emirates, or Japan Airlines to get the fastest option. Airlines will cover a distance of 14124 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 ฿27,222, 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 ฿33,189 and ฿33,548, respectively. These flights start at 32% 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 ฿15,704). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿37,564). 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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,222Average฿35,139FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿33,189Average฿33,590FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,548Average฿36,669FlexibilityNo 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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