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Dulles Intl

$614+ 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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
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 May 28, 2026.

This United Airlines deal was found by Cheapflights users on 5/25. 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.
Mon 6/157:00 am
BKK
-
IAD
2 stops25h 00m
United Airlines
Thu 8/69:10 am
IAD
-
BKK
2 stops37h 25m
United Airlines
Deal found 5/25$966
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:30 am
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Sun 8/93:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/27$972
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Tue 6/239:35 am
BKK
-
IAD
2 stops48h 44m
United Airlines
Fri 7/2410:20 pm
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/23$975
This United Airlines deal was found by Cheapflights users on 5/25. 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.
Mon 9/79:35 am
BKK
-
IAD
2 stops46h 53m
United Airlines
Sun 9/203:15 pm
IAD
-
BKK
2 stops31h 20m
United Airlines
Deal found 5/25$977
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Sun 11/19:10 am
BKK
-
IAD
2 stops25h 50m
United Airlines
Wed 11/410:08 am
IAD
-
BKK
2 stops50h 12m
United Airlines
Deal found 5/24$978
This United Airlines deal was found by Cheapflights users on 5/26. 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 9/287:00 am
BKK
-
IAD
2 stops26h 59m
United Airlines
Wed 9/303:35 pm
IAD
-
BKK
2 stops31h 00m
United Airlines
Deal found 5/26$979
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Wed 9/93:45 pm
BKK
-
IAD
3 stops30h 41m
United Airlines
Wed 9/301:03 pm
IAD
-
BKK
2 stops33h 32m
United Airlines
Deal found 5/24$986
This United Airlines deal was found by Cheapflights users on 5/26. 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 6/157:00 am
BKK
-
IAD
2 stops27h 19m
United Airlines
Fri 8/710:20 pm
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/26$988
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:30 am
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Thu 8/63:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/27$992
This United Airlines deal was found by Cheapflights users on 5/26. 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 9/13:45 pm
BKK
-
IAD
3 stops30h 41m
United Airlines
Fri 10/29:45 am
IAD
-
BKK
2 stops36h 50m
United Airlines
Deal found 5/26$996
This FlightHub deal was found by Cheapflights users on 5/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:20 pm
CNX
-
IAD
2 stops49h 14m
Multiple Airlines
Tue 6/25:35 pm
IAD
-
CNX
2 stops35h 45m
Multiple Airlines
Deal found 5/25$1,149
This Qatar Airways deal was found by Cheapflights users on 5/27. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/811:55 am
CNX
-
IAD
2 stops41h 25m
Multiple Airlines
Mon 7/209:00 pm
IAD
-
CNX
2 stops25h 20m
Multiple Airlines
Deal found 5/27$1,478

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 May 28, 2026.

Round-trip from

$966
(United Airlines)

One-way from

$614
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$1,277
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. 17% potential increase in price ($251 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 28, 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

Tue 9/1

3:45 pm-11:26 am

3 stops30h 41m

Washington, D.C. Dulles Intl

Fri 10/2

9:45 am-9:35 am

2 stops36h 50m

$996

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/18

9:35 am-3:50 pm

1 stop41h 15m

Washington, D.C. Dulles Intl

Wed 8/5

3:15 pm-9:35 am

2 stops31h 20m

$1,199

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/18

9:35 am-3:50 pm

1 stop41h 15m

Washington, D.C. Dulles Intl

Sat 8/8

1:10 pm-9:35 am

2 stops33h 25m

$1,199

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 6/14

9:40 pm-12:25 am

2 stops37h 45m

Washington, D.C. Dulles Intl

Tue 8/4

6:49 pm-11:35 pm

2 stops41h 46m

$1,200

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 8/19

9:35 am-9:23 am

2 stops58h 48m

Washington, D.C. Dulles Intl

Wed 9/9

6:42 am-4:35 am

2 stops34h 53m

$1,221

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/17

1:50 am-3:40 pm

1 stop24h 50m

Washington, D.C. Dulles Intl

Fri 8/7

6:50 pm-1:45 pm

1 stop31h 55m

$1,230

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 6/16

7:45 pm-3:40 pm

1 stop30h 55m

Washington, D.C. Dulles Intl

Tue 6/23

9:00 pm-7:15 am

1 stop23h 15m

$1,232

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 6/13

3:45 pm-6:58 am

2 stops26h 13m

Washington, D.C. Dulles Intl

Sat 8/8

5:42 pm-9:35 am

3 stops28h 53m

$1,232

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 7/22

12:50 pm-4:45 pm

1 stop38h 55m

Washington, D.C. Dulles Intl

Wed 8/19

5:40 pm-9:50 am

1 stop29h 10m

$1,263

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 6/14

7:45 pm-6:20 pm

1 stop33h 35m

Washington, D.C. Dulles Intl

Fri 8/7

9:00 pm-7:15 am

1 stop23h 15m

$1,298

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/23

Showing 1-10 of 56 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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $472). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,129). 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 17 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 May 28, 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
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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
1,217 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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
8.3
Very good
1,216 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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!!
Delta
7.9
Good
8,426 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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
3,726 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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
9,751 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

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?

    United Airlines, Delta, and Emirates can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 30h 41m. Your travel time can differ by up to 7h 04m. Thailand and Washington, D.C. Dulles Intl Airport are separated by a distance of 8792 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 IndiGo and AIR PREMIA, 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 Chiang Mai - 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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $472). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,129). 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
Owings Mills
Springfield
Arlington
Reston
Herndon
Fredericksburg
Rockville
Hyattsville
Manassas
Hanover
Chantilly
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley

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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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$1,028Average$1,337FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,219FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,065Average$1,172FlexibilityNo 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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