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Cheap flights from Bangkok to Washington, D.C. Dulles Intl Airport from ฿20,984

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bangkok to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Bangkok to Dulles Intl
Explore the most affordable flight options available from Bangkok to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 August 2026.

Sun 20/915:25 -
1 stop35h 20m
Sun 27/918:50 -
1 stop31h 55m
Deal found 6/8฿26,922
Sun 4/1015:25 -
1 stop35h 20m
Sun 18/1018:50 -
1 stop31h 55m
Deal found 8/8฿27,120
Sun 6/915:25 -
1 stop35h 20m
Sun 13/918:50 -
1 stop31h 55m
Deal found 7/8฿27,549
Sun 13/915:25 -
1 stop35h 20m
Sun 20/918:50 -
1 stop31h 55m
Deal found 10/8฿27,615
Tue 8/915:25 -
1 stop35h 20m
Sun 13/918:50 -
1 stop31h 55m
Deal found 6/8฿28,704
Sat 19/1215:20 -
1 stop35h 25m
Fri 15/117:50 -
1 stop31h 50m
Deal found 7/8฿31,244
Fri 11/1215:20 -
1 stop34h 30m
Fri 1/117:50 -
1 stop31h 50m
Deal found 7/8฿31,409
Tue 1/1215:20 -
1 stop35h 25m
Sun 6/1217:50 -
1 stop31h 50m
Deal found 6/8฿31,970
Sun 13/923:55 -
1 stop43h 45m
Fri 18/910:55 -
1 stop22h 50m
Deal found 6/8฿47,774
Fri 23/1023:50 -
1 stop44h 10m
Sat 31/1011:15 -
1 stop22h 00m
Deal found 9/8฿48,071
Mon 19/1014:00 -
2 stops30h 45m
Sun 25/1011:30 -
2 stops24h 50m
Deal found 9/8฿48,533
Thu 3/913:30 -
1 stop30h 10m
Wed 16/910:55 -
1 stop22h 50m
Deal found 10/8฿48,698

Find flight deals from Bangkok to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) to Dulles Intl (IAD). 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 10 August 2026.

Round-trip from

฿26,922

One-way from

฿20,984

Popular in

December

Cheapest in

March

Average price

฿40,251
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 20/9-27/9
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
STARLUX Airlines
  • STARLUX Airlines
  • 17/9
  • 2 total stops
  • 27h 30m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (฿61,855 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease (฿11,522 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bangkok to Dulles Intl 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 10 August 2026.
Use the filters below to find and compare flights from Bangkok to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Fri 5/2

01:15-13:50

1 stop24h 35m

Washington, D.C. Dulles Intl

Sun 14/2

17:50-13:40

1 stop31h 50m

฿31,640

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Wed 23/9

21:00-09:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Sun 27/9

15:10-18:10

1 stop40h 00m

฿34,082

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sat 5/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sat 12/9

17:15-09:35

3 stops29h 20m

฿34,115

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 6/9

07:00-22:19

2 stops26h 19m

Washington, D.C. Dulles Intl

Sun 13/9

15:15-04:35

2 stops26h 20m

฿34,313

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sat 3/10

15:45-11:55

3 stops31h 10m

Washington, D.C. Dulles Intl

Thu 15/10

06:35-23:55

2 stops30h 20m

฿34,742

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Mon 14/9

02:30-15:40

1 stop24h 10m

Washington, D.C. Dulles Intl

Thu 22/10

21:00-13:25

1 stop29h 25m

฿35,929

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Wed 23/9

15:45-05:40

2 stops24h 55m

Washington, D.C. Dulles Intl

Sun 27/9

08:25-09:35

2 stops38h 10m

฿38,734

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sat 19/12

14:00-15:40

2 stops37h 40m

Washington, D.C. Dulles Intl

Fri 15/1

22:15-15:30

2 stops29h 15m

฿40,746
Fastest return journey

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Thu 10/9

23:30-11:05

1 stop22h 35m

Washington, D.C. Dulles Intl

Sun 27/12

11:50-23:20

1 stop23h 30m

฿47,411

BangkokWashington, D.C.

DMK Bangkok Don Mueang Intl - IAD Washington, D.C. Dulles Intl

DMKIAD

Bangkok Don Mueang Intl

Thu 3/9

13:30-08:40

1 stop30h 10m

Washington, D.C. Dulles Intl

Wed 16/9

10:55-20:45

1 stop22h 50m

฿48,698

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 37 resultsSorted by cheapest first
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Best time to book a flight from Bangkok to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport

What is the cheapest month to book a flight from Bangkok to Washington, D.C. Dulles Intl Airport?

Currently, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿34,346). Flying from Bangkok to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of ฿42,429). 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. Dulles Intl Airport?

Airfare is below average for this route at the moment.
Bangkok to Washington, D.C. Dulles Intl Airport flights typically cost between ฿35,369 and ฿47,774 in September.
The cheapest return price found within the last 5 days was ฿26,922 on ซาอุเดียแอร์ไลน์ (20 Sep–27 Sep).

How far ahead should I book a flight from Bangkok to Washington, D.C. Dulles Intl Airport?

The best time to book flights from Bangkok to Washington, D.C. Dulles Intl Airport 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 10 August 2026.
Check out reviews from past customers who have flown with Korean Air,Qatar Airways, andUnited Airlines from Bangkok to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,221 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Qatar Airways
7.4
Good
3,740 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
10,101 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
เอทิฮัดแอร์เวย์
7.3
Good
1,502 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Bangkok to Dulles Intl. 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. Dulles Intl Airport?

    For as low as ฿34,082, ซาอุเดียแอร์ไลน์ can have you in Washington, D.C. Dulles Intl Airport from Bangkok in 23h 45m. The distance between Bangkok and Washington, D.C. Dulles Intl Airport is about 14149 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Bangkok to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, United Airlines (฿26,994), เอทิฮัดแอร์เวย์ (฿32,911), and Korean Air (฿33,267) offers the cheapest pricing from Bangkok to Washington, D.C. Dulles Intl Airport. United Airlines is currently priced 30% below the average price you’ll pay for this route.

  • Can I find deals for flights from Bangkok to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Bangkok to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Bangkok to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to Dulles Intl.

  • Can I find deals for business class flights from Bangkok to Dulles Intl?

    Yes. Cheapflights offers flight deals from Bangkok to Dulles Intl 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. Dulles Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿34,346). Flying from Bangkok to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of ฿42,429). 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

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Alternative routes for Bangkok to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Dulles Intl flights
Chiang Mai to Baltimore flights
Chiang Mai to Reagan-National flights

Top 4 airlines flying from Bangkok to Dulles Intl

Discover the top 4 airlines that operate flights from Bangkok to Dulles Intl. 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 10 August 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿26,994Average฿34,542FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿32,911Average฿33,308FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,267Average฿36,362FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Qatar AirwaysCheapest฿35,983Average฿41,347FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Bangkok to Dulles Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Bangkok to Dulles Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Dulles Intl?

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 Dulles Intl.

Can Cheapflights find flights from Bangkok to Dulles Intl with no change fees?

Need flexible booking options for your flight to Dulles Intl from Bangkok? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Bangkok to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Bangkok today and book when prices fit your budget.

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