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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿18,002

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
1 Mar — 8 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 30 January 2026.

Wed 6/507:05
BKK
-
IAD
2 stops39h 45m
แอร์แคนาดา
Wed 13/512:39
IAD
-
BKK
2 stops29h 26m
แอร์แคนาดา
Deal found 29/1฿30,139
Sat 7/210:50
BKK
-
IAD
2 stops44h 30m
IndiGo
Sun 15/213:30
IAD
-
BKK
2 stops43h 35m
IndiGo
Deal found 28/1฿31,106
Tue 20/1007:45
BKK
-
IAD
2 stops43h 35m
แอร์แคนาดา
Sun 25/1009:45
IAD
-
BKK
2 stops32h 45m
แอร์แคนาดา
Deal found 29/1฿31,294
Sat 7/210:50
BKK
-
IAD
2 stops44h 30m
Multiple Airlines
Sun 15/214:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 28/1฿31,793
Wed 25/210:10
BKK
-
IAD
2 stops45h 10m
Multiple Airlines
Wed 4/314:35
IAD
-
BKK
1 stop40h 10m
Multiple Airlines
Deal found 28/1฿32,042
Tue 10/308:50
BKK
-
IAD
2 stops36h 15m
Multiple Airlines
Wed 29/415:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 28/1฿32,323
Wed 4/319:10
BKK
-
IAD
3 stops46h 30m
Multiple Airlines
Wed 29/415:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 28/1฿32,417
Wed 11/210:10
BKK
-
IAD
2 stops45h 10m
IndiGo
Sat 14/213:30
IAD
-
BKK
2 stops43h 35m
IndiGo
Deal found 28/1฿32,510
Thu 19/310:50
BKK
-
IAD
2 stops34h 15m
Multiple Airlines
Mon 23/315:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 28/1฿32,573
Tue 14/411:35
CNX
-
IAD
2 stops29h 05m
Multiple Airlines
Thu 30/419:20
IAD
-
CNX
2 stops28h 05m
Multiple Airlines
Deal found 28/1฿32,947
Thu 26/210:10
BKK
-
IAD
2 stops45h 10m
Multiple Airlines
Thu 5/314:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 28/1฿32,978
Tue 10/316:55
BKK
-
IAD
3 stops40h 41m
United Airlines
Tue 9/617:55
IAD
-
BKK
2 stops47h 40m
United Airlines
Deal found 29/1฿33,041

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 30 January 2026.

Round-trip from

฿30,139

One-way from

฿18,002

Popular in

August

Cheapest in

October

Average price

฿39,780
แอร์แคนาดา
  • แอร์แคนาดา
  • 6/5-13/5
  • 4 total stops
  • 69h 11m total
  • Thailand to Washington, D.C.
Search Deals
17/3
  • 17/3
  • 3 total stops
  • 56h 00m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿22,509 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿28,160 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 30 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

Thu 19/3

10:50-10:05

2 stops34h 15m

Washington, D.C. Dulles Intl

Mon 23/3

15:35-23:25

1 stop20h 50m

฿32,573

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 14/4

11:35-05:40

2 stops29h 05m

Washington, D.C. Dulles Intl

Thu 30/4

19:20-10:25

2 stops28h 05m

฿32,947

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 10/3

17:15-17:20

2 stops35h 05m

Washington, D.C. Dulles Intl

Wed 29/4

19:20-10:55

2 stops28h 35m

฿33,197

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 7/2

16:55-20:49

3 stops39h 54m

Washington, D.C. Dulles Intl

Sun 15/2

08:30-11:25

2 stops38h 55m

฿33,259

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 8/2

16:55-11:23

3 stops30h 28m

Washington, D.C. Dulles Intl

Tue 17/2

18:05-11:25

2 stops29h 20m

฿33,259

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 10/3

07:10-21:18

2 stops25h 08m

Washington, D.C. Dulles Intl

Wed 29/4

10:10-09:35

3 stops36h 25m

฿33,322

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 4/3

14:45-09:05

2 stops30h 20m

Washington, D.C. Dulles Intl

Wed 29/4

15:10-23:50

1 stop21h 40m

฿33,353

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 3/3

16:55-11:49

3 stops30h 54m

Washington, D.C. Dulles Intl

Wed 4/3

15:45-11:25

2 stops31h 40m

฿33,415

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 11/2

16:55-16:05

3 stops35h 10m

Washington, D.C. Dulles Intl

Sat 14/2

22:05-11:25

2 stops49h 20m

฿33,571

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 19/3

16:55-23:59

3 stops42h 04m

Washington, D.C. Dulles Intl

Mon 23/3

22:05-11:25

2 stops50h 20m

฿33,571

Flights are sorted by cheapest return flights first.

Deals found on 29/1

Showing 1-10 of 48 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 ฿29,141). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,256). 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 30 January 2026.
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
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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
1,188 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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!!
ANA
8.4
Very Good
1,078 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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
3,725 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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
9,216 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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
1,375 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Boarding

8.5

Entertainment

8.2

Food

8.1

Comfort

8.3

Crew

8.7

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 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 and เอทิฮัดแอร์เวย์ can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 15m. Your travel time can differ by up to 4h 39m. Thailand and Washington, D.C. Dulles Intl Airport are separated by a distance of 13576 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 Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl or Chiang Mai - 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 ฿29,141). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,256). 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 30 January 2026.
AirlineCheapestAverageFlexibilityOn-time
ซาอุเดียแอร์ไลน์Cheapest฿27,488Average฿30,185FlexibilityNo cancel feeOn-time86%
Search ซาอุเดียแอร์ไลน์ flights
United AirlinesCheapest฿30,275Average฿31,633FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿31,122Average฿31,498FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿31,550Average฿35,122FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿33,056Average฿40,569FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿35,069Average฿38,633FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

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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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