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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿19,753

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
16 May — 23 May1
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 16 April 2026.

Thu 30/402:30
BKK
-
IAD
1 stop26h 40m
Qatar Airways
Sun 10/521:00
IAD
-
BKK
1 stop22h 50m
Qatar Airways
Deal found 15/4฿35,120
Wed 10/619:45
BKK
-
IAD
1 stop33h 25m
Multiple Airlines
Wed 9/921:00
IAD
-
BKK
1 stop29h 25m
Multiple Airlines
Deal found 16/4฿35,152
Mon 25/509:50
BKK
-
IAD
2 stops26h 01m
เดลต้า
Wed 16/906:00
IAD
-
BKK
2 stops28h 45m
เดลต้า
Deal found 14/4฿35,280
Sun 3/519:45
BKK
-
IAD
1 stop33h 25m
Multiple Airlines
Thu 7/515:10
IAD
-
BKK
1 stop28h 35m
Multiple Airlines
Deal found 14/4฿35,440
Thu 7/521:40
BKK
-
IAD
2 stops37h 35m
เดลต้า
Thu 5/1107:05
IAD
-
BKK
2 stops29h 40m
เดลต้า
Deal found 15/4฿35,472
Fri 25/1223:15
BKK
-
IAD
1 stop22h 35m
Korean Air
Fri 8/111:50
IAD
-
BKK
1 stop37h 35m
Korean Air
Deal found 14/4฿35,504
Thu 7/519:40
BKK
-
IAD
1 stop33h 30m
Qatar Airways
Thu 5/1120:05
IAD
-
BKK
1 stop34h 20m
Qatar Airways
Deal found 15/4฿35,536
Thu 27/813:55
BKK
-
IAD
2 stops35h 00m
ANA
Thu 10/912:35
IAD
-
BKK
1 stop29h 00m
ANA
Deal found 12/4฿35,633
Wed 6/501:20
BKK
-
IAD
2 stops33h 49m
Multiple Airlines
Thu 5/1120:05
IAD
-
BKK
1 stop22h 35m
Multiple Airlines
Deal found 15/4฿35,665
Wed 10/609:50
BKK
-
IAD
2 stops25h 35m
เดลต้า
Wed 12/807:00
IAD
-
BKK
2 stops29h 35m
เดลต้า
Deal found 12/4฿35,697
Fri 26/609:55
BKK
-
IAD
1 stop40h 45m
Multiple Airlines
Wed 9/921:00
IAD
-
BKK
1 stop28h 55m
Multiple Airlines
Deal found 13/4฿35,729
Wed 22/419:45
BKK
-
IAD
1 stop33h 25m
Qatar Airways
Wed 20/521:00
IAD
-
BKK
1 stop29h 45m
Qatar Airways
Deal found 15/4฿35,761

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 16 April 2026.

Round-trip from

฿35,120

One-way from

฿19,753

Popular in

April

Cheapest in

October

Average price

฿59,292
Qatar Airways
  • Qatar Airways
  • 30/4-10/5
  • 2 total stops
  • 49h 30m total
  • Thailand to Washington, D.C.
Search Deals
Qatar Airways
  • Qatar Airways
  • 28/4
  • 1 total stop
  • 33h 25m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿249,254 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿65,356 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 16 April 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

Cheapest return flight

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 26/5

09:35-11:52

2 stops61h 17m

Washington, D.C. Dulles Intl

Tue 30/6

12:15-04:35

1 stop29h 20m

฿35,472

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 22/5

23:30-00:15

2 stops35h 45m

Washington, D.C. Dulles Intl

Tue 30/6

07:15-01:05

2 stops30h 50m

฿35,697

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 4/5

01:00-18:10

1 stop28h 10m

Washington, D.C. Dulles Intl

Tue 26/5

21:00-13:05

1 stop29h 05m

฿36,465

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 30/4

19:00-18:10

1 stop34h 10m

Washington, D.C. Dulles Intl

Wed 6/5

21:00-14:00

2 stops30h 00m

฿37,842
Fastest return journey

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 10/6

09:50-00:25

2 stops25h 35m

Washington, D.C. Dulles Intl

Wed 12/8

13:30-01:05

1 stop24h 35m

฿38,962

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 12/5

19:40-18:10

1 stop33h 30m

Washington, D.C. Dulles Intl

Wed 3/6

21:00-13:45

1 stop29h 45m

฿39,282

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 22/5

19:45-18:10

1 stop33h 25m

Washington, D.C. Dulles Intl

Tue 30/6

21:00-06:20

1 stop22h 20m

฿39,826

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 10/5

02:30-18:10

1 stop26h 40m

Washington, D.C. Dulles Intl

Mon 25/5

21:00-14:00

2 stops30h 00m

฿39,955

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 20/4

09:35-16:03

2 stops41h 28m

Washington, D.C. Dulles Intl

Mon 4/5

09:00-04:35

2 stops32h 35m

฿40,467

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/5

19:00-18:10

1 stop34h 10m

Washington, D.C. Dulles Intl

Wed 13/5

21:00-16:30

2 stops32h 30m

฿40,627

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 50 resultsSorted by cheapest first
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5

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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿15,111). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿36,145). 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 16 April 2026.
Check out reviews from past customers who have flown with ANA,Korean Air, andUnited Airlines 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
1,175 reviews
Check prices

Crew

8.7

Boarding

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.2

Food

7.8

Reviews

1 / 20
8.0
Excellent

Sarah,Apr 2026

HND - SEA

Overall good experience, the food was better going to Japan than on the way home. The app is very slow and rather clunky. The seats aren't overly comfortable, but you get what you pay for. The service is top notch and can't give them enough credit! I left my ear buds on my first flight and they found them and they were at the airport waiting for me for my flight home!
ANA
8.4
Very Good
1,175 reviews
ANA
8.4
Very Good
1,175 reviews
Check prices

Crew

8.7

Boarding

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.2

Food

7.8

Reviews

1 / 20
8.0
Excellent

Sarah,Apr 2026

HND - SEA

Overall good experience, the food was better going to Japan than on the way home. The app is very slow and rather clunky. The seats aren't overly comfortable, but you get what you pay for. The service is top notch and can't give them enough credit! I left my ear buds on my first flight and they found them and they were at the airport waiting for me for my flight home!
Korean Air
8.4
Very Good
1,205 reviews
ANA
8.4
Very Good
1,175 reviews
Check prices

Crew

8.7

Boarding

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.2

Food

7.8

Reviews

1 / 20
8.0
Excellent

Sarah,Apr 2026

HND - SEA

Overall good experience, the food was better going to Japan than on the way home. The app is very slow and rather clunky. The seats aren't overly comfortable, but you get what you pay for. The service is top notch and can't give them enough credit! I left my ear buds on my first flight and they found them and they were at the airport waiting for me for my flight home!
United Airlines
7.4
Good
9,594 reviews
ANA
8.4
Very Good
1,175 reviews
Check prices

Crew

8.7

Boarding

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.2

Food

7.8

Reviews

1 / 20
8.0
Excellent

Sarah,Apr 2026

HND - SEA

Overall good experience, the food was better going to Japan than on the way home. The app is very slow and rather clunky. The seats aren't overly comfortable, but you get what you pay for. The service is top notch and can't give them enough credit! I left my ear buds on my first flight and they found them and they were at the airport waiting for me for my flight home!
เอทิฮัดแอร์เวย์
7.3
Good
1,430 reviews
ANA
8.4
Very Good
1,175 reviews
Check prices

Crew

8.7

Boarding

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.2

Food

7.8

Reviews

1 / 20
8.0
Excellent

Sarah,Apr 2026

HND - SEA

Overall good experience, the food was better going to Japan than on the way home. The app is very slow and rather clunky. The seats aren't overly comfortable, but you get what you pay for. The service is top notch and can't give them enough credit! I left my ear buds on my first flight and they found them and they were at the airport waiting for me for my flight home!

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, เดลต้า, and Qatar Airways 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 25h 32m. 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 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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿15,111). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of ฿36,145). 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 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 4 airlines flying from Thailand to Dulles Intl

Discover the top 4 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 16 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿30,949Average฿32,523FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿31,935Average฿32,321FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿32,374Average฿34,915FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿33,920Average฿38,894FlexibilityNo cancel feeOn-time80%
Search ANA 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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