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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿18,281

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
30 Jan — 6 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Dulles Intl

Enter your travel dates to find the best prices.

Best flights from Thailand to Dulles Intl
Discover carefully curated flight deals from Thailand to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 December 2025.

Thu 5/323:50BKK - IAD
2 stops41h 50mMultiple Airlines
Wed 15/415:35IAD - BKK
1 stop27h 55mMultiple Airlines
Deal found 29/12฿32,314
Wed 22/409:35BKK - IAD
1 stop41h 05mUnited Airlines
Thu 30/413:05IAD - BKK
3 stops33h 40mUnited Airlines
Deal found 30/12฿32,817
Tue 26/517:20CNX - IAD
2 stops49h 14mSTARLUX Airlines
Tue 2/617:33IAD - CNX
2 stops35h 47mSTARLUX Airlines
Deal found 29/12฿33,132
Fri 15/507:05BKK - IAD
2 stops35h 45mแอร์แคนาดา
Wed 16/908:20IAD - BKK
1 stop33h 55mแอร์แคนาดา
Deal found 29/12฿33,321
Mon 20/401:50BKK - IAD
1 stop24h 55mซาอุเดียแอร์ไลน์
Sat 13/618:50IAD - BKK
1 stop31h 50mซาอุเดียแอร์ไลน์
Deal found 30/12฿33,415
Tue 3/308:50CNX - IAD
1 stop36h 15mเอทิฮัดแอร์เวย์
Thu 2/415:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 31/12฿37,631
Mon 2/210:50BKK - IAD
2 stops34h 15mMultiple Airlines
Sun 15/214:35IAD - BKK
1 stop20h 50mMultiple Airlines
Deal found 28/12฿32,692
Thu 5/316:55BKK - IAD
3 stops30h 54mUnited Airlines
Wed 15/420:53IAD - BKK
2 stops49h 52mUnited Airlines
Deal found 30/12฿33,352
Sat 16/507:45BKK - IAD
2 stops23h 47mแอร์แคนาดา
Wed 16/909:45IAD - BKK
2 stops25h 10mแอร์แคนาดา
Deal found 29/12฿34,328
Wed 22/411:20CNX - IAD
2 stops40h 45mMultiple Airlines
Tue 28/409:00IAD - CNX
2 stops38h 20mMultiple Airlines
Deal found 30/12฿32,912
Mon 2/216:55BKK - IAD
3 stops40h 22mUnited Airlines
Sun 15/222:05IAD - BKK
2 stops49h 20mUnited Airlines
Deal found 28/12฿34,013
Sat 13/609:30CNX - IAD
1 stop35h 15mเอทิฮัดแอร์เวย์
Tue 14/715:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 29/12฿39,897
Mon 2/213:40DMK - IAD
2 stops31h 25mMultiple Airlines
Sun 15/214:35IAD - DMK
2 stops23h 55mMultiple Airlines
Deal found 30/12฿33,038
Sat 13/617:20CNX - IAD
2 stops49h 12mSTARLUX Airlines
Sun 12/717:01IAD - CNX
2 stops36h 19mSTARLUX Airlines
Deal found 29/12฿42,225
Tue 5/502:40BKK - IAD
2 stops49h 25mMultiple Airlines
Wed 13/517:30IAD - BKK
2 stops44h 55mMultiple Airlines
Deal found 29/12฿33,478
Sun 14/609:30CNX - IAD
1 stop35h 15mเอทิฮัดแอร์เวย์
Tue 14/715:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 29/12฿41,407
Wed 22/407:00BKK - IAD
2 stops24h 29mMultiple Airlines
Thu 30/415:35IAD - BKK
1 stop28h 10mMultiple Airlines
Deal found 30/12฿33,698
Sat 13/609:30CNX - IAD
1 stop35h 15mเอทิฮัดแอร์เวย์
Thu 16/715:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 29/12฿41,407
Tue 3/311:50CNX - IAD
2 stops41h 30mMultiple Airlines
Thu 2/407:00IAD - CNX
2 stops40h 25mMultiple Airlines
Deal found 31/12฿34,044
Sun 14/609:30CNX - IAD
1 stop35h 15mเอทิฮัดแอร์เวย์
Thu 16/715:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 29/12฿41,407
Thu 11/609:30CNX - IAD
1 stop35h 15mเอทิฮัดแอร์เวย์
Sun 12/715:35IAD - CNX
1 stop27h 20mเอทิฮัดแอร์เวย์
Deal found 29/12฿41,816
Thu 12/302:55BKK - IAD
1 stop42h 10mMultiple Airlines
Fri 27/311:40IAD - BKK
1 stop20h 45mMultiple Airlines
Deal found 30/12฿34,831
Wed 22/417:00DMK - IAD
2 stops34h 05mMultiple Airlines
Thu 30/415:35IAD - DMK
2 stops25h 55mMultiple Airlines
Deal found 30/12฿35,429
Thu 11/611:35CNX - IAD
2 stops30h 57mMultiple Airlines
Tue 14/717:01IAD - CNX
2 stops30h 24mMultiple Airlines
Deal found 29/12฿38,859
Sun 15/202:35DMK - IAD
2 stops30h 19mMultiple Airlines
Sun 22/315:35IAD - DMK
2 stops25h 45mMultiple Airlines
Deal found 30/12฿40,054
Fri 12/611:20CNX - IAD
2 stops38h 45mMultiple Airlines
Thu 16/717:01IAD - CNX
2 stops30h 19mMultiple Airlines
Deal found 29/12฿40,998

Find flight deals from Thailand to Dulles Intl

Keep the following information in mind while searching for Thailand to Dulles Intl flight deals. Data was last updated 31 December 2025.

Round-trip from

฿29,010

One-way from

฿18,281

Popular in

August

Cheapest in

October

Average price

฿37,348
เอทิฮัดแอร์เวย์
  • เอทิฮัดแอร์เวย์
  • 2/2-15/2
  • 3 total stops
  • 73h 05m total
  • Thailand to Washington, D.C.
Search Deals
25/1
  • 25/1
  • 2 total stops
  • 45h 20m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (฿37,579 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿29,692 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Thailand 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 31 December 2025.
Use the filters below to find and compare flights from Thailand to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Thailand

Fly to

Dulles Intl

Route

Depart

Return

Price

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/3

23:50-05:40

2 stops41h 50m

Washington, D.C. Dulles Intl

Wed 15/4

15:35-06:30

1 stop27h 55m

฿32,314

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 2/2

10:50-09:05

2 stops34h 15m

Washington, D.C. Dulles Intl

Sun 15/2

14:35-23:25

1 stop20h 50m

฿32,692

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 22/4

09:35-15:40

1 stop41h 05m

Washington, D.C. Dulles Intl

Thu 30/4

13:05-09:45

3 stops33h 40m

฿32,817

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 22/4

11:20-17:05

2 stops40h 45m

Washington, D.C. Dulles Intl

Tue 28/4

09:00-10:20

2 stops38h 20m

฿32,912

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Mon 2/2

13:40-09:05

2 stops31h 25m

Washington, D.C. Dulles Intl

Sun 15/2

14:35-02:30

2 stops23h 55m

฿33,038

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 26/5

17:20-07:34

2 stops49h 14m

Washington, D.C. Dulles Intl

Tue 2/6

17:33-16:20

2 stops35h 47m

฿33,132

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 15/5

07:05-07:50

2 stops35h 45m

Washington, D.C. Dulles Intl

Wed 16/9

08:20-05:15

1 stop33h 55m

฿33,321

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/3

16:55-11:49

3 stops30h 54m

Washington, D.C. Dulles Intl

Wed 15/4

20:53-09:45

2 stops49h 52m

฿33,352

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 20/4

01:50-15:45

1 stop24h 55m

Washington, D.C. Dulles Intl

Sat 13/6

18:50-13:40

1 stop31h 50m

฿33,415

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 5/5

02:40-17:05

2 stops49h 25m

Washington, D.C. Dulles Intl

Wed 13/5

17:30-01:25

2 stops44h 55m

฿33,478

Flights are sorted by cheapest return flights first.

Deals found on 29/12

Showing 1-10 of 50 results
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Best time to book a flight from Thailand to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Thailand 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 Thailand to Washington, D.C. Dulles Intl Airport

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

Currently, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿28,853). Flying from Thailand to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of ฿33,667). 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.

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 31 December 2025.
Check out reviews from past customers who have flown with Korean Air, ANA, andQatar Airways from Thailand 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
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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
8.5
Very Good
1,183 reviews
Korean Air
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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!!
ANA
8.4
Very Good
1,050 reviews
Korean Air
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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
3,700 reviews
Korean Air
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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
9,122 reviews
Korean Air
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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
1,348 reviews
Korean Air
8.5
Very Good
1,183 reviews
Check prices

Entertainment

8.2

Overall

8.5

Boarding

8.5

Food

8.1

Comfort

8.3

Crew

8.7

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 Thailand 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 Thailand to Washington, D.C. Dulles Intl Airport?

    United Airlines, STARLUX Airlines, and แอร์แคนาดา can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 45m. Your travel time can differ by up to 13h 29m. Thailand and Washington, D.C. Dulles Intl Airport are separated by a distance of 14149 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Thailand to Washington, D.C. Dulles Intl Airport?

    While some choose either Chiang Mai - Washington, D.C. Dulles Intl or Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl, Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl is the most popular route from Thailand to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Thailand 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 Thailand to Washington, D.C. Dulles Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿28,853). Flying from Thailand to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of ฿33,667). 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 Thailand 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 Reagan-National flights
Chiang Mai to Baltimore flights

Top 6 airlines flying from Thailand to Dulles Intl

Discover the top 6 airlines that operate flights from Thailand 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 31 December 2025.
AirlineCheapestAverageFlexibilityOn-time
ซาอุเดียแอร์ไลน์Cheapest฿27,721Average฿30,441FlexibilityNo cancel feeOn-time86%
Search ซาอุเดียแอร์ไลน์ flights
United AirlinesCheapest฿30,532Average฿31,908FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿31,386Average฿31,765FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿31,818Average฿35,419FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿33,337Average฿39,619FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿38,482Average฿43,244FlexibilityNo 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 Thailand to Dulles Intl?

When you search for this flight from Thailand to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Thailand.

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

Yes, we can. To see specific flights from Thailand to Dulles Intl 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 Thailand to Dulles Intl become cheaper?

Not ready to book yet? You can track prices for flights from Thailand to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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