Find flights
When to book
Airlines
FAQs

Cheap flights from Bangkok to Washington, D.C. from ฿20,083

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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
5 Jun — 12 Jun1
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 May 2026.

Thu 15/1007:00
BKK
-
DCA
2 stops25h 53m
United Airlines
Thu 22/1014:00
DCA
-
BKK
3 stops32h 35m
United Airlines
Deal found 3/5฿35,807
Mon 7/915:45
BKK
-
DCA
3 stops29h 32m
United Airlines
Sun 13/911:30
DCA
-
BKK
3 stops35h 05m
United Airlines
Deal found 6/5฿35,936
Sun 14/621:35
BKK
-
IAD
1 stop23h 30m
ANA
Tue 4/815:30
IAD
-
BKK
2 stops26h 05m
ANA
Deal found 6/5฿36,033
Mon 15/601:50
BKK
-
IAD
1 stop24h 50m
Multiple Airlines
Wed 5/815:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 6/5฿36,065
Thu 22/1015:45
BKK
-
DCA
3 stops34h 11m
United Airlines
Mon 26/1015:30
DCA
-
BKK
2 stops26h 40m
United Airlines
Deal found 2/5฿36,194
Sat 26/1220:30
BKK
-
IAD
1 stop23h 50m
Qatar Airways
Mon 11/120:05
IAD
-
BKK
1 stop22h 10m
Qatar Airways
Deal found 5/5฿36,291
Sat 10/1021:05
BKK
-
IAD
1 stop29h 35m
Qatar Airways
Sat 24/1021:00
IAD
-
BKK
1 stop22h 40m
Qatar Airways
Deal found 6/5฿36,324
Sat 10/1015:45
BKK
-
DCA
3 stops28h 30m
United Airlines
Fri 23/1007:50
DCA
-
BKK
2 stops40h 35m
United Airlines
Deal found 4/5฿36,356
Sun 11/1002:30
BKK
-
IAD
1 stop24h 10m
Qatar Airways
Sun 25/1020:05
IAD
-
BKK
1 stop23h 10m
Qatar Airways
Deal found 5/5฿36,356
Mon 7/920:00
BKK
-
IAD
1 stop23h 45m
Qatar Airways
Sun 13/921:00
IAD
-
BKK
1 stop22h 20m
Qatar Airways
Deal found 6/5฿36,485
Fri 9/1016:45
BKK
-
DCA
2 stops38h 15m
Multiple Airlines
Mon 2/1109:30
DCA
-
BKK
2 stops37h 40m
Multiple Airlines
Deal found 5/5฿36,646
Sun 5/715:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sat 11/718:50
IAD
-
BKK
1 stop42h 15m
ซาอุเดียแอร์ไลน์
Deal found 4/5฿36,711

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 May 2026.

Round-trip from

฿35,807

One-way from

฿20,083

Popular in

April

Cheapest in

October

Average price

฿41,490
United Airlines
  • United Airlines
  • 15/10-22/10
  • 5 total stops
  • 58h 28m total
  • Bangkok to Washington, D.C.
Search Deals
AIR PREMIA
  • AIR PREMIA
  • 21/5
  • 1 total stop
  • 23h 05m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿256,178 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿66,763 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 May 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 22/10

07:00-21:53

2 stops25h 53m

Washington, D.C. Reagan-National

Mon 26/10

10:30-05:10

2 stops31h 40m

฿36,065

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 10/10

15:45-09:15

3 stops28h 30m

Washington, D.C. Reagan-National

Fri 23/10

07:50-11:25

2 stops40h 35m

฿36,356

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 9/10

09:35-07:35

2 stops33h 00m

Washington, D.C. Dulles Intl

Mon 2/11

12:20-05:10

1 stop28h 50m

฿38,035

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 4/6

12:50-16:45

1 stop38h 55m

Washington, D.C. Dulles Intl

Thu 11/6

22:35-09:50

2 stops24h 15m

฿39,359

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 15/6

15:45-07:30

2 stops26h 45m

Washington, D.C. Dulles Intl

Tue 4/8

22:20-09:35

2 stops48h 15m

฿39,649

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 12/6

19:45-18:20

1 stop33h 35m

Washington, D.C. Dulles Intl

Tue 30/6

21:00-07:15

1 stop23h 15m

฿39,940

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Wed 10/6

09:00-19:40

2 stops45h 40m

Baltimore/Washington

Wed 9/9

19:25-06:50

2 stops48h 25m

฿40,553

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 10/10

17:30-20:00

2 stops37h 30m

Washington, D.C. Reagan-National

Fri 23/10

09:30-09:50

2 stops37h 20m

฿40,941

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 27/5

02:30-18:20

1 stop26h 50m

Washington, D.C. Dulles Intl

Thu 2/7

21:00-12:55

1 stop28h 55m

฿42,103

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 15/6

15:45-09:24

3 stops28h 39m

Washington, D.C. Dulles Intl

Sun 2/8

20:00-09:35

2 stops26h 35m

฿42,168

Flights are sorted by cheapest return flights first.

Deals found on 6/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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.

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 35 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.

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 ฿15,240). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,453). 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.?

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 May 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
9,684 reviews
Check prices

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,684 reviews
United Airlines
7.4
Good
9,684 reviews
Check prices

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 25h 53m. Fly via United Airlines, สวิส อินเตอร์เนชั่นแนล แอร์ไลน์, or Qatar Airways to get the fastest option. Airlines will cover a distance of 14157 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 ฿31,212, 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 ฿32,207 and ฿32,650, 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 - Washington, D.C. Reagan-National 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 ฿15,240). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,453). 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 6 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,212Average฿32,800FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,207Average฿32,596FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿32,650Average฿35,212FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿34,209Average฿39,225FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.