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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿18,977

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
23 Feb — 2 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Thailand to Dulles Intl
Explore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 January 2026.

Wed 6/507:05
BKK
-
IAD
2 stops35h 45m
แอร์แคนาดา
Wed 13/512:39
IAD
-
BKK
2 stops29h 26m
แอร์แคนาดา
Deal found 24/1฿29,958
Sun 25/110:50
BKK
-
IAD
2 stops44h 30m
IndiGo
Sun 8/221:15
IAD
-
BKK
2 stops35h 50m
IndiGo
Deal found 22/1฿30,052
Tue 28/407:45
BKK
-
IAD
2 stops23h 52m
แอร์แคนาดา
Tue 5/509:55
IAD
-
BKK
2 stops26h 15m
แอร์แคนาดา
Deal found 24/1฿30,643
Sun 25/115:30
BKK
-
IAD
2 stops39h 50m
Multiple Airlines
Sun 8/214:35
IAD
-
BKK
1 stop39h 25m
Multiple Airlines
Deal found 22/1฿30,891
Mon 26/108:00
BKK
-
IAD
2 stops24h 54m
Multiple Airlines
Mon 2/209:00
IAD
-
BKK
2 stops33h 30m
Multiple Airlines
Deal found 22/1฿31,078
Tue 28/407:00
BKK
-
IAD
2 stops24h 37m
Multiple Airlines
Tue 5/515:10
IAD
-
BKK
1 stop28h 35m
Multiple Airlines
Deal found 24/1฿31,327
Thu 26/214:40
BKK
-
IAD
2 stops27h 00m
Multiple Airlines
Mon 9/318:27
IAD
-
BKK
2 stops29h 43m
Multiple Airlines
Deal found 22/1฿31,887
Sun 15/223:55
BKK
-
IAD
2 stops41h 45m
Multiple Airlines
Wed 11/315:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 21/1฿32,074
Mon 16/320:40
BKK
-
IAD
2 stops32h 45m
Multiple Airlines
Wed 18/315:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 24/1฿32,167
Wed 11/310:50
BKK
-
IAD
2 stops34h 15m
Multiple Airlines
Tue 17/315:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 24/1฿32,260
Tue 26/511:35
CNX
-
IAD
2 stops30h 59m
EVA Air
Tue 2/617:33
IAD
-
CNX
2 stops29h 52m
EVA Air
Deal found 22/1฿32,882
Tue 21/411:20
CNX
-
IAD
2 stops29h 20m
Multiple Airlines
Sun 24/517:33
IAD
-
CNX
2 stops29h 47m
Multiple Airlines
Deal found 23/1฿35,153

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 24 January 2026.

Round-trip from

฿29,958

One-way from

฿18,977

Popular in

August

Cheapest in

October

Average price

฿39,664
แอร์แคนาดา
  • แอร์แคนาดา
  • 6/5-13/5
  • 4 total stops
  • 65h 11m total
  • Thailand to Washington, D.C.
Search Deals
5/2
  • 5/2
  • 3 total stops
  • 54h 00m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿22,407 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿27,990 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 24 January 2026.
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

Tue 28/4

07:00-22:44

2 stops26h 44m

Washington, D.C. Dulles Intl

Tue 5/5

13:10-09:35

3 stops33h 25m

฿33,256

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 19/4

13:55-15:40

1 stop36h 45m

Washington, D.C. Dulles Intl

Sun 20/9

15:30-04:35

2 stops26h 05m

฿33,691

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 7/4

02:40-17:05

2 stops49h 25m

Washington, D.C. Dulles Intl

Wed 9/9

15:25-09:45

2 stops31h 20m

฿33,971

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 21/4

11:20-05:40

2 stops29h 20m

Washington, D.C. Dulles Intl

Sun 24/5

17:33-10:20

2 stops29h 47m

฿35,153

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 11/3

09:10-16:38

2 stops42h 28m

Washington, D.C. Dulles Intl

Mon 11/5

22:30-23:55

2 stops38h 25m

฿35,278

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 11/3

09:10-16:38

2 stops42h 28m

Washington, D.C. Dulles Intl

Sun 10/5

08:20-04:35

2 stops33h 15m

฿35,496

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 11/5

17:30-05:50

2 stops23h 20m

Washington, D.C. Dulles Intl

Mon 25/5

17:33-09:45

2 stops29h 12m

฿35,776

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 5/4

21:05-15:40

2 stops53h 35m

Washington, D.C. Dulles Intl

Sat 2/5

15:10-23:50

1 stop21h 40m

฿35,869

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 21/4

11:20-05:40

2 stops29h 20m

Washington, D.C. Dulles Intl

Mon 25/5

17:33-10:20

2 stops29h 47m

฿35,931

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/5

19:40-08:40

1 stop24h 00m

Washington, D.C. Dulles Intl

Wed 13/5

20:20-12:55

1 stop29h 35m

฿35,962

Flights are sorted by cheapest return flights first.

Deals found on 21/1

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, June is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿29,056). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,153). 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 24 January 2026.
Check out reviews from past customers who have flown with ANA, Korean Air, 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.
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
ANA
8.4
Very Good
1,078 reviews
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Korean Air
8.4
Very Good
1,188 reviews
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Qatar Airways
7.4
Good
3,730 reviews
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
United Airlines
7.4
Good
9,198 reviews
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
เอทิฮัดแอร์เวย์
7.3
Good
1,375 reviews
ANA
8.4
Very Good
1,078 reviews
Check prices

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!

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, ANA, and เอทิฮัดแอร์เวย์ can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 26h 44m. Your travel time can differ by up to 10h 01m. 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, June is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿29,056). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,153). 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 Reagan-National flights
Chiang Mai to Baltimore flights
Chiang Mai to Dulles Intl 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 24 January 2026.
AirlineCheapestAverageFlexibilityOn-time
ซาอุเดียแอร์ไลน์Cheapest฿27,408Average฿30,098FlexibilityNo cancel feeOn-time86%
Search ซาอุเดียแอร์ไลน์ flights
United AirlinesCheapest฿30,187Average฿31,541FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿31,032Average฿31,406FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿31,459Average฿35,019FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿32,960Average฿40,451FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿34,967Average฿38,521FlexibilityNo 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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