Find flights
When to book
Airlines
FAQs

Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿19,344

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
12 Jul — 19 Jul1
1 adult

Cheap 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 7 July 2025.

Round-trip from

฿31,971

One-way from

฿19,344

Popular in

August

Cheapest in

January

Average price

฿36,750
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 3/10-18/10
  • 2 total stops
  • 77h 40m total
  • Thailand to Washington, D.C.
Search Deals
17/9
  • 17/9
  • 3 total stops
  • 48h 15m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (฿106,614 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿40,194 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Thailand to Dulles Intl

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 7 July 2025.

Fri 3/1015:25BKK - IAD
1 stop35h 20mซาอุเดียแอร์ไลน์
Sat 18/1018:50IAD - BKK
1 stop42h 20mซาอุเดียแอร์ไลน์
Deal found 6/7฿31,971
Sun 13/723:30BKK - IAD
1 stop22h 45mKorean Air
Wed 23/713:30IAD - BKK
1 stop24h 35mKorean Air
Deal found 7/7฿32,003
Mon 1/923:15CNX - IAD
2 stops35h 17mเดลต้า
Sat 6/909:00IAD - CNX
2 stops49h 55mเดลต้า
Deal found 6/7฿33,230
Sun 21/909:50BKK - IAD
2 stops25h 23mเดลต้า
Mon 19/107:15IAD - BKK
2 stops26h 15mเดลต้า
Deal found 6/7฿33,230
Sun 13/709:35BKK - IAD
1 stop41h 10mUnited Airlines
Wed 23/708:30IAD - BKK
2 stops33h 05mUnited Airlines
Deal found 7/7฿33,424
Wed 16/723:40BKK - IAD
2 stops47h 05mMultiple Airlines
Mon 4/812:15IAD - BKK
1 stop29h 20mMultiple Airlines
Deal found 7/7฿34,134
Fri 3/1013:55BKK - IAD
1 stop31h 10mANA
Sat 18/1013:20IAD - BKK
2 stops28h 15mANA
Deal found 6/7฿34,393
Wed 17/908:40BKK - IAD
1 stop42h 00mQatar Airways
Mon 13/1021:00IAD - BKK
1 stop22h 15mQatar Airways
Deal found 5/7฿34,845
Mon 17/1102:00BKK - IAD
1 stop25h 55mเจ็ตบลู
Sat 29/1120:05IAD - BKK
1 stop21h 50mเจ็ตบลู
Deal found 7/7฿36,008
Thu 25/907:45BKK - IAD
2 stops24h 20mแอร์แคนาดา
Mon 19/113:20IAD - BKK
2 stops29h 10mแอร์แคนาดา
Deal found 6/7฿36,201
Tue 29/723:40BKK - IAD
2 stops47h 05mIndiGo
Tue 30/921:40IAD - BKK
2 stops38h 00mIndiGo
Deal found 6/7฿36,298
Tue 15/702:40BKK - IAD
2 stops48h 45mChina Airlines
Mon 4/819:59IAD - BKK
2 stops29h 11mChina Airlines
Deal found 5/7฿36,460

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 7 July 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

Fri 3/10

15:25-15:45

1 stop35h 20m

Washington, D.C. Dulles Intl

Sat 18/10

18:50-00:10

1 stop42h 20m

฿31,971

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 24/9

23:30-10:55

1 stop22h 25m

Washington, D.C. Dulles Intl

Sat 17/1

11:50-13:15

1 stop37h 25m

฿32,003

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 1/9

23:15-23:32

2 stops35h 17m

Washington, D.C. Dulles Intl

Sat 6/9

09:00-21:55

2 stops49h 55m

฿33,230

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 21/9

23:30-16:31

2 stops28h 01m

Washington, D.C. Dulles Intl

Thu 15/1

07:15-21:30

2 stops26h 15m

฿33,230

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 20/8

13:30-07:32

2 stops29h 02m

Washington, D.C. Dulles Intl

Wed 27/8

13:30-23:25

1 stop22h 55m

฿33,424

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 29/8

09:35-15:45

1 stop41h 10m

Washington, D.C. Dulles Intl

Wed 29/10

06:30-00:05

2 stops30h 35m

฿33,489

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 3/10

13:55-10:05

1 stop31h 10m

Washington, D.C. Dulles Intl

Sat 18/10

13:20-04:35

2 stops28h 15m

฿34,393

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 17/9

08:40-15:40

1 stop42h 00m

Washington, D.C. Dulles Intl

Mon 13/10

21:00-06:15

1 stop22h 15m

฿34,845

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 17/11

02:00-15:55

1 stop25h 55m

Washington, D.C. Dulles Intl

Sat 29/11

20:05-05:55

1 stop21h 50m

฿36,008

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 25/9

07:45-21:05

2 stops24h 20m

Washington, D.C. Dulles Intl

Mon 19/1

13:20-06:30

2 stops29h 10m

฿36,201

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 42 results
1
2
3
...
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 time of day to fly from TH to IAD?

Find hourly flight availability from Thailand to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Thailand to Washington, D.C. Dulles Intl Airport as you normally would.

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 7 July 2025.
Check out reviews from past customers who have flown with Korean Air, ANA, andJapan 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.
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very Good
1,102 reviews
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
ANA
8.4
Very Good
895 reviews
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Japan Airlines
8.3
Very Good
1,505 reviews
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
China Airlines
8.3
Very Good
744 reviews
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Asiana Airlines
8.2
Very Good
454 reviews
Korean Air
8.4
Very Good
1,102 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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.

  • What are the cheapest airlines to fly from Thailand to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as ฿20,959. However, be on the lookout for offers from เดลต้า and Air China, as they are both options that can get you from Thailand to Washington, D.C. Dulles Intl Airport for a low price.

  • 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.

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 7 July 2025.
AirlineCheapestAverageFlexibilityOn-time
ซาอุเดียแอร์ไลน์Cheapest฿28,451Average฿31,244FlexibilityNo cancel feeOn-time86%
Search ซาอุเดียแอร์ไลน์ flights
United AirlinesCheapest฿32,196Average฿33,791FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Korean AirCheapest฿33,766Average฿41,403FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
ANACheapest฿34,116Average฿40,008FlexibilityNo cancel feeOn-time80%
Search ANA flights
Qatar AirwaysCheapest฿39,988Average฿45,645FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
EmiratesCheapest฿42,205Average฿47,760FlexibilityNo cancel feeOn-time75%
Search Emirates 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights