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Cheap flights from Bangkok to Washington, D.C. from ฿19,861

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
25 Jun — 2 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 26 May 2026.

Mon 15/607:00
BKK
-
IAD
2 stops35h 22m
United Airlines
Fri 7/822:20
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 25/5฿31,350
Wed 9/909:35
BKK
-
DCA
2 stops58h 20m
United Airlines
Wed 21/1006:00
DCA
-
BKK
2 stops35h 35m
United Airlines
Deal found 23/5฿31,609
Wed 16/909:35
BKK
-
DCA
2 stops61h 24m
United Airlines
Sun 20/906:30
DCA
-
BKK
2 stops35h 05m
United Airlines
Deal found 21/5฿31,642
Tue 23/609:35
BKK
-
IAD
2 stops48h 44m
United Airlines
Fri 24/722:20
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 23/5฿31,642
Mon 7/909:35
BKK
-
IAD
2 stops46h 53m
United Airlines
Sun 20/915:15
IAD
-
BKK
2 stops31h 20m
United Airlines
Deal found 25/5฿31,707
Sun 1/1109:10
BKK
-
IAD
2 stops25h 50m
United Airlines
Wed 4/1108:35
IAD
-
BKK
2 stops27h 45m
United Airlines
Deal found 21/5฿31,739
Tue 20/1015:45
BKK
-
DCA
3 stops31h 38m
United Airlines
Sun 25/1006:00
DCA
-
BKK
2 stops36h 10m
United Airlines
Deal found 23/5฿31,966
Mon 28/907:00
BKK
-
IAD
2 stops26h 59m
United Airlines
Wed 30/912:35
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 25/5฿31,966
Wed 9/915:45
BKK
-
IAD
3 stops30h 41m
United Airlines
Wed 30/913:03
IAD
-
BKK
2 stops33h 32m
United Airlines
Deal found 24/5฿31,999
Wed 16/1209:10
BKK
-
IAD
2 stops43h 04m
United Airlines
Mon 4/111:10
IAD
-
BKK
2 stops60h 15m
United Airlines
Deal found 23/5฿32,193
Mon 15/607:00
BKK
-
IAD
2 stops27h 19m
ANA
Fri 7/822:20
IAD
-
BKK
1 stop48h 15m
ANA
Deal found 25/5฿32,550
Mon 15/607:00
BKK
-
DCA
2 stops25h 53m
ANA
Fri 7/807:55
DCA
-
BKK
2 stops38h 40m
ANA
Deal found 25/5฿33,459

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 26 May 2026.

Round-trip from

฿31,317

One-way from

฿19,861

Popular in

April

Cheapest in

October

Average price

฿41,442
United Airlines
  • United Airlines
  • 14/6-5/8
  • 5 total stops
  • 70h 24m total
  • Bangkok to Washington, D.C.
Search Deals
AIR PREMIA
  • AIR PREMIA
  • 16/6
  • 1 total stop
  • 23h 05m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (฿264,412 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿68,295 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 26 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 - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 28/9

07:00-22:59

2 stops26h 59m

Washington, D.C. Dulles Intl

Wed 30/9

12:35-04:35

1 stop29h 00m

฿31,966

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 31/10

09:10-20:43

2 stops22h 33m

Washington, D.C. Reagan-National

Wed 4/11

11:30-00:20

3 stops48h 50m

฿35,990

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Sun 25/10

17:50-05:20

2 stops22h 30m

Baltimore/Washington

Thu 12/11

18:12-09:50

2 stops27h 38m

฿36,964

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 25/10

14:05-05:40

2 stops26h 35m

Washington, D.C. Dulles Intl

Thu 12/11

17:14-09:50

2 stops28h 36m

฿36,964

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 22/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Wed 19/8

12:50-04:35

1 stop28h 45m

฿37,094

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 3/7

01:50-15:40

1 stop24h 50m

Washington, D.C. Dulles Intl

Sat 25/7

15:10-18:10

1 stop40h 00m

฿37,645

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 18/6

09:35-15:50

1 stop41h 15m

Washington, D.C. Dulles Intl

Wed 5/8

15:15-09:35

2 stops31h 20m

฿38,911

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 9/6

02:35-20:48

2 stops29h 13m

Washington, D.C. Reagan-National

Wed 9/9

10:00-21:45

2 stops24h 45m

฿38,944
Fastest return journey

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 6/7

02:30-15:40

1 stop24h 10m

Washington, D.C. Dulles Intl

Tue 14/7

11:05-19:25

1 stop21h 20m

฿38,944

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Wed 10/6

09:00-19:40

2 stops45h 40m

Baltimore/Washington

Wed 9/9

19:25-17:45

2 stops35h 20m

฿38,976

Flights are sorted by cheapest return flights first.

Deals found on 22/5

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 ฿15,318). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,639). 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 26 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
9,749 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

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
9,749 reviews
United Airlines
7.4
Good
9,749 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

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 26h 26m. Fly via United Airlines, เดลต้า, or Korean Air to get the fastest option. Airlines will cover a distance of 14120 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 ฿31,372, 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 ฿32,372 and ฿32,817, 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 ฿15,318). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of ฿36,639). 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 26 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,372Average฿32,968FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,372Average฿32,763FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿32,817Average฿35,393FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿34,285Average฿37,337FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿36,478Average฿40,010FlexibilityNo 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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