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Dulles Intl

$617+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
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 13, 2026.

This United Airlines deal was found by Cheapflights users on 5/11. 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.
Sat 6/133:45 pm
BKK
-
IAD
3 stops28h 40m
United Airlines
Fri 7/318:15 am
IAD
-
BKK
2 stops33h 20m
United Airlines
Deal found 5/11$1,118
This United Airlines deal was found by Cheapflights users on 5/9. 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 9/307:00 am
BKK
-
IAD
2 stops23h 14m
United Airlines
Wed 10/146:30 am
IAD
-
BKK
2 stops30h 25m
United Airlines
Deal found 5/9$1,123
This ANA deal was found by Cheapflights users on 5/11. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:55 pm
BKK
-
IAD
1 stop31h 10m
ANA
Wed 9/93:40 pm
IAD
-
BKK
2 stops25h 55m
ANA
Deal found 5/11$1,124
This Trip.com deal was found by Cheapflights users on 5/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2810:45 pm
BKK
-
IAD
1 stop23h 05m
Multiple Airlines
Thu 7/23:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/12$1,126
This FlightHub deal was found by Cheapflights users on 5/12. 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.
Wed 5/279:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Thu 9/33:10 pm
IAD
-
BKK
1 stop40h 00m
Etihad Airways
Deal found 5/12$1,135
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Thu 7/239:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Fri 8/143:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Deal found 5/12$1,140
This SmartFares deal was found by Cheapflights users on 5/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/243:00 am
BKK
-
IAD
1 stop23h 40m
Qatar Airways
Thu 7/211:05 am
IAD
-
BKK
1 stop33h 10m
Qatar Airways
Deal found 5/11$1,143
This SAUDIA deal was found by Cheapflights users on 5/12. 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 SAUDIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:50 am
BKK
-
IAD
1 stop24h 50m
SAUDIA
Sat 9/196:50 pm
IAD
-
BKK
1 stop31h 50m
SAUDIA
Deal found 5/12$1,149
This Qatar Airways deal was found by Cheapflights users on 5/12. 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.
Sat 5/237:40 pm
BKK
-
IAD
1 stop33h 40m
Multiple Airlines
Tue 6/3011:05 am
IAD
-
BKK
1 stop33h 10m
Multiple Airlines
Deal found 5/12$1,151
This United Airlines deal was found by Cheapflights users on 5/10. 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 9/157:00 am
BKK
-
IAD
2 stops35h 22m
United Airlines
Sat 9/1910:20 pm
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/10$1,152
This Orbitz deal was found by Cheapflights users on 5/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:00 pm
CNX
-
IAD
2 stops55h 45m
SWISS
Wed 6/108:20 pm
IAD
-
CNX
2 stops30h 25m
SWISS
Deal found 5/9$1,224
This FlightHub deal was found by Cheapflights users on 5/9. 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 6/28:00 pm
CNX
-
IAD
2 stops55h 45m
Multiple Airlines
Wed 6/1010:20 pm
IAD
-
CNX
2 stops33h 50m
Multiple Airlines
Deal found 5/9$1,273

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 13, 2026.

Round-trip from

$1,118
(United Airlines)

One-way from

$617
(oojo)

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 ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($66 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 13, 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

Fri 5/29

7:00 am-12:45 am

2 stops28h 45m

Washington, D.C. Dulles Intl

Sat 9/5

6:15 am-4:35 am

2 stops35h 20m

$1,219

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 7/14

9:35 am-2:12 pm

2 stops39h 37m

Washington, D.C. Dulles Intl

Tue 7/28

6:30 am-4:35 am

2 stops35h 05m

$1,225

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 7/24

9:35 am-2:12 pm

2 stops39h 37m

Washington, D.C. Dulles Intl

Sat 8/1

10:20 pm-9:35 am

2 stops48h 15m

$1,287

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 10/16

1:10 pm-5:40 am

2 stops27h 30m

Washington, D.C. Dulles Intl

Fri 10/30

5:33 pm-12:35 pm

2 stops32h 02m

$1,313

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 10/16

3:45 pm-2:03 pm

3 stops33h 18m

Washington, D.C. Dulles Intl

Fri 10/30

1:00 pm-11:25 am

3 stops35h 25m

$1,348

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 5/26

9:25 am-4:45 pm

2 stops42h 20m

Washington, D.C. Dulles Intl

Tue 6/2

8:20 pm-1:45 pm

2 stops30h 25m

$1,391

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 6/1

9:40 pm-12:13 am

2 stops37h 33m

Washington, D.C. Dulles Intl

Mon 6/29

6:00 am-1:05 am

2 stops32h 05m

$1,419

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 6/8

4:55 pm-3:05 pm

2 stops33h 10m

Washington, D.C. Dulles Intl

Mon 7/20

10:20 pm-7:10 pm

2 stops33h 50m

$1,486

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 7/11

7:00 am-12:55 am

2 stops28h 55m

Washington, D.C. Dulles Intl

Sat 7/18

12:50 pm-9:35 am

3 stops33h 45m

$1,492

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Thu 9/17

11:50 pm-8:40 am

1 stop43h 50m

Washington, D.C. Dulles Intl

Mon 9/21

10:55 am-11:10 am

1 stop37h 15m

$1,493

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 52 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

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 35 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.

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.

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 13, 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

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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
1,208 reviews
Korean Air
8.4
Very good
1,217 reviews

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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
8,450 reviews
Korean Air
8.4
Very good
1,217 reviews

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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
3,728 reviews
Korean Air
8.4
Very good
1,217 reviews

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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
9,704 reviews
Korean Air
8.4
Very good
1,217 reviews

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Boarding

8.5

Food

8.1

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 Lufthansa can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 27h 30m. Your travel time can differ by up to 5h 40m. 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
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Silver Spring
Hanover
Laurel
Woodbridge
Waldorf
Largo
Clinton
Hunt Valley
Cordova
Reston

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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 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,056Average$1,219FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,065Average$1,172FlexibilityNo cancel feeOn-time81%
ANACheapest$1,109Average$1,337FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,112Average$1,119FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,142Average$1,177FlexibilityNo cancel feeOn-time68%

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