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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿14,479

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
1 Apr — 8 Apr1
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 2 March 2026.

Thu 26/301:30
BKK
-
IAD
1 stop29h 00m
Air China
Fri 3/423:00
IAD
-
BKK
1 stop32h 20m
Air China
Deal found 27/2฿23,470
Mon 9/319:30
BKK
-
IAD
1 stop35h 00m
Air China
Tue 7/423:00
IAD
-
BKK
1 stop38h 10m
Air China
Deal found 1/3฿23,656
Mon 16/319:30
BKK
-
IAD
1 stop35h 00m
Air China
Fri 3/423:00
IAD
-
BKK
1 stop32h 20m
Air China
Deal found 2/3฿25,021
Thu 19/301:30
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Thu 30/415:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 28/2฿28,028
Thu 23/408:05
BKK
-
IAD
2 stops36h 40m
Multiple Airlines
Wed 6/515:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 28/2฿28,462
Thu 5/319:30
BKK
-
IAD
1 stop35h 00m
Air China
Tue 10/323:00
IAD
-
BKK
1 stop32h 05m
Air China
Deal found 28/2฿28,555
Thu 5/301:30
BKK
-
IAD
1 stop29h 00m
Air China
Tue 10/323:00
IAD
-
BKK
1 stop32h 05m
Air China
Deal found 28/2฿28,617
Thu 5/319:30
BKK
-
IAD
1 stop35h 00m
Multiple Airlines
Mon 20/415:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 28/2฿28,648
Thu 5/319:30
BKK
-
IAD
1 stop35h 00m
Air China
Tue 21/423:00
IAD
-
BKK
1 stop32h 20m
Air China
Deal found 28/2฿28,710
Tue 26/511:35
CNX
-
IAD
2 stops30h 59m
EVA Air
Tue 2/617:35
IAD
-
CNX
2 stops29h 50m
EVA Air
Deal found 28/2฿32,338
Tue 2/611:35
CNX
-
IAD
2 stops30h 59m
Multiple Airlines
Wed 12/806:00
IAD
-
CNX
2 stops41h 25m
Multiple Airlines
Deal found 27/2฿33,609
Sat 7/320:55
DMK
-
IAD
2 stops29h 50m
Multiple Airlines
Fri 24/413:20
IAD
-
DMK
1 stop39h 15m
Multiple Airlines
Deal found 28/2฿34,260

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 2 March 2026.

Round-trip from

฿23,470

One-way from

฿14,479

Popular in

August

Cheapest in

October

Average price

฿42,569
Air China
  • Air China
  • 26/3-3/4
  • 2 total stops
  • 61h 20m total
  • Thailand to Washington, D.C.
Search Deals
Air China
  • Air China
  • 15/6
  • 1 total stop
  • 31h 25m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿16,912 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿30,370 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 2 March 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

Fly to

Route

Depart

Return

Price

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 1/4

21:40-23:49

2 stops37h 09m

Washington, D.C. Dulles Intl

Mon 6/4

19:29-21:45

2 stops39h 16m

฿33,454

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 30/3

21:40-23:40

2 stops37h 00m

Washington, D.C. Dulles Intl

Mon 6/4

17:32-21:45

2 stops41h 13m

฿33,485

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 28/7

09:35-07:22

2 stops32h 47m

Washington, D.C. Dulles Intl

Tue 29/9

13:05-09:35

3 stops33h 30m

฿34,632

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 30/7

09:35-07:22

2 stops32h 47m

Washington, D.C. Dulles Intl

Tue 29/9

13:05-09:35

3 stops33h 30m

฿34,632

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 29/4

15:45-14:03

3 stops33h 18m

Washington, D.C. Dulles Intl

Wed 3/6

17:55-04:35

2 stops47h 40m

฿35,407

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 26/5

11:35-07:34

2 stops30h 59m

Washington, D.C. Dulles Intl

Tue 2/6

17:35-10:25

2 stops29h 50m

฿35,469

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 29/4

16:45-09:45

2 stops52h 00m

Washington, D.C. Dulles Intl

Mon 8/6

13:20-15:50

1 stop39h 30m

฿36,585

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 29/4

17:00-09:45

2 stops51h 45m

Washington, D.C. Dulles Intl

Wed 3/6

13:20-15:50

1 stop39h 30m

฿37,081

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 2/6

11:35-07:34

2 stops30h 59m

Washington, D.C. Dulles Intl

Fri 24/7

01:50-10:25

1 stop21h 35m

฿37,143

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 2/6

11:20-07:34

2 stops31h 14m

Washington, D.C. Dulles Intl

Sun 2/8

16:45-10:20

2 stops30h 35m

฿37,485

Flights are sorted by cheapest return flights first.

Deals found on 1/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 ฿28,958). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,252). 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 2 March 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
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,195 reviews
Korean Air
8.4
Very Good
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,107 reviews
Korean Air
8.4
Very Good
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
3,745 reviews
Korean Air
8.4
Very Good
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
9,372 reviews
Korean Air
8.4
Very Good
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,420 reviews
Korean Air
8.4
Very Good
1,195 reviews
Check prices

Crew

8.7

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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?

    เดลต้า and United Airlines can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 32h 47m. Your travel time can differ by up to 4h 22m. 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 ฿28,958). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿35,252). 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 5 airlines flying from Thailand to Dulles Intl

Discover the top 5 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 2 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿30,085Average฿31,497FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿30,927Average฿31,301FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿31,353Average฿33,813FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿32,849Average฿41,265FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿34,850Average฿38,391FlexibilityNo 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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