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Dulles Intl

$628+ Cheap flights from Thailand to Dulles Intl (IAD)

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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap 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 July 26, 2026.

This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sun 9/206:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/25$867
This Ovago deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sun 9/206:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/22$907
This Justfly.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sun 10/186:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/22$964
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 9/146:13 am
IAD
-
BKK
2 stops35h 22m
United Airlines
Deal found 7/24$1,013
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:35 am
BKK
-
IAD
1 stop41h 15m
United Airlines
Thu 8/205:15 pm
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 7/23$1,014
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 10/256:11 am
IAD
-
BKK
2 stops35h 59m
United Airlines
Deal found 7/24$1,016
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 10/196:10 am
IAD
-
BKK
2 stops29h 05m
United Airlines
Deal found 7/23$1,017
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 3/98:35 am
IAD
-
BKK
2 stops32h 35m
United Airlines
Deal found 7/21$1,018
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am
BKK
-
IAD
2 stops39h 24m
United Airlines
Sun 9/205:15 pm
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 7/25$1,023
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:20 pm
CNX
-
IAD
2 stops47h 20m
STARLUX Airlines
Sun 9/65:47 pm
IAD
-
CNX
2 stops35h 18m
STARLUX Airlines
Deal found 7/22$1,287
This FlightHub deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 am
CNX
-
IAD
2 stops29h 05m
Multiple Airlines
Sat 9/51:15 am
IAD
-
CNX
1 stop22h 10m
Multiple Airlines
Deal found 7/22$1,375
This Mytrip deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:25 am
DMK
-
IAD
1 stop25h 35m
Multiple Airlines
Mon 9/213:10 pm
IAD
-
DMK
2 stops26h 25m
Multiple Airlines
Deal found 7/22$1,423

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 July 26, 2026.

Round-trip from

$830
(Gotogate)

One-way from

$628
(oojo)

Popular in

April

Cheapest in

October

Average price

$1,339
From Thailand to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Thailand to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated July 26, 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 round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 9/17

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 9/20

1:10 pm-9:35 am

3 stops33h 25m

$1,018

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 9/21

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 3/9

8:35 am-5:10 am

2 stops32h 35m

$1,018

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 9/26

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Wed 10/28

1:00 pm-11:30 am

3 stops35h 30m

$1,058

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 9/8

7:00 am-12:44 am

2 stops28h 44m

Washington, D.C. Dulles Intl

Tue 10/6

12:35 pm-4:35 am

1 stop29h 00m

$1,064

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 11/19

7:10 am-12:30 am

2 stops29h 20m

Washington, D.C. Dulles Intl

Mon 11/23

9:00 am-11:30 am

2 stops38h 30m

$1,065

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 12/14

9:10 am-4:01 pm

2 stops42h 51m

Washington, D.C. Dulles Intl

Tue 12/29

12:20 pm-11:30 am

2 stops35h 10m

$1,078

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 9/8

10:50 am-5:40 am

2 stops29h 50m

Washington, D.C. Dulles Intl

Tue 10/6

9:38 am-9:45 am

2 stops37h 07m

$1,148

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 8/31

3:45 pm-4:23 pm

2 stops35h 38m

Washington, D.C. Dulles Intl

Wed 9/30

9:28 am-9:35 am

2 stops37h 07m

$1,161

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 11/19

6:55 pm-8:10 am

1 stop25h 15m

Washington, D.C. Dulles Intl

Mon 11/23

8:05 pm-12:15 pm

1 stop28h 10m

$1,175

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 8/20

5:20 pm-5:40 am

2 stops47h 20m

Washington, D.C. Dulles Intl

Sun 9/6

5:47 pm-4:05 pm

2 stops35h 18m

$1,287

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 51 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 round-trip 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $1,041). Flying from Thailand to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $1,230). 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.

How far ahead should I book a flight from Thailand to Washington, D.C. Dulles Intl Airport?

The best time to book flights from Thailand to Washington, D.C. Dulles Intl Airport is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 July 26, 2026.
Read reviews from past customers who have flown Korean Air,ANA, andDelta from Thailand to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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
1,221 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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
8.3
Very good
1,278 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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!!
Delta
7.8
Good
8,486 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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
10,036 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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
7.3
Good
3,748 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

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, STARLUX Airlines, and Emirates can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 31h 30m. Your travel time can differ by up to 15h 50m. Thailand and Washington, D.C. Dulles Intl Airport are separated by a distance of 8776 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Air China, with whom users have recently found tickets for as low as $423. However, be on the lookout for offers from AIR PREMIA and Turkish Airlines, 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?

    The most popular flight routes from Thailand to Washington, D.C. Dulles Intl Airport are Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl, Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl and Utapao Rayong Pattaya - Washington, D.C. Dulles Intl.

  • 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 vacation 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $1,041). Flying from Thailand to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $1,230). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

Browse thousands of different options on Cheapflights for your next trip

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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 2,558,603 searches. Data last updated July 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$958Average$1,147FlexibilityNo cancel feeOn-time69%
ANACheapest$1,028Average$1,286FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$1,045Average$1,221FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,112Average$1,119FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,142Average$1,179FlexibilityNo cancel feeOn-time68%

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