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Dulles Intl

$578+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
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 March 1, 2026.

This Ovago deal was found by Cheapflights users on 2/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/261:30 am
BKK
-
IAD
1 stop29h 00m
Air China
Fri 4/311:00 pm
IAD
-
BKK
1 stop32h 20m
Air China
Deal found 2/27$757
This Ovago deal was found by Cheapflights users on 3/1. 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.
Mon 3/97:30 pm
BKK
-
IAD
1 stop35h 00m
Air China
Tue 4/711:00 pm
IAD
-
BKK
1 stop38h 10m
Air China
Deal found 3/1$763
This Gotogate deal was found by Cheapflights users on 2/28. 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.
Thu 3/191:30 am
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Thu 4/303:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 2/28$904
This Vliegwinkel deal was found by Cheapflights users on 2/28. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:05 am
BKK
-
IAD
2 stops36h 40m
Multiple Airlines
Wed 5/63:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 2/28$918
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/57:30 pm
BKK
-
IAD
1 stop35h 00m
Air China
Tue 3/1011:00 pm
IAD
-
BKK
1 stop32h 05m
Air China
Deal found 2/28$921
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/51:30 am
BKK
-
IAD
1 stop29h 00m
Air China
Tue 3/1011:00 pm
IAD
-
BKK
1 stop32h 05m
Air China
Deal found 2/28$923
This Expedia deal was found by Cheapflights users on 2/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:30 pm
BKK
-
IAD
1 stop35h 00m
Multiple Airlines
Mon 4/203:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 2/28$924
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/57:30 pm
BKK
-
IAD
1 stop35h 00m
Air China
Tue 4/2111:00 pm
IAD
-
BKK
1 stop32h 20m
Air China
Deal found 2/28$926
This Gurufare deal was found by Cheapflights users on 2/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:35 am
CNX
-
IAD
2 stops30h 59m
Multiple Airlines
Tue 6/25:35 pm
IAD
-
CNX
2 stops29h 50m
Multiple Airlines
Deal found 2/26$1,040
This oojo deal was found by Cheapflights users on 2/28. 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.
Tue 5/2611:35 am
CNX
-
IAD
2 stops30h 59m
EVA Air
Tue 6/25:35 pm
IAD
-
CNX
2 stops29h 50m
EVA Air
Deal found 2/28$1,043
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:35 am
CNX
-
IAD
2 stops30h 59m
Multiple Airlines
Wed 8/126:00 am
IAD
-
CNX
2 stops41h 25m
Multiple Airlines
Deal found 2/27$1,084
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
Sat 3/78:55 pm
DMK
-
IAD
2 stops29h 50m
Multiple Airlines
Fri 4/241:20 pm
IAD
-
DMK
1 stop39h 15m
Multiple Airlines
Deal found 2/28$1,105

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 March 1, 2026.

Round-trip from

$757
(Ovago)

One-way from

$578
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$1,373
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. 1% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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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 March 1, 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

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 5/26

11:35 am-7:34 am

2 stops30h 59m

Washington, D.C. Dulles Intl

Tue 6/2

5:35 pm-10:25 am

2 stops29h 50m

$1,043

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 4/1

9:40 pm-11:49 pm

2 stops37h 09m

Washington, D.C. Dulles Intl

Mon 4/6

7:29 pm-9:45 pm

2 stops39h 16m

$1,079

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 3/4

9:30 pm-11:10 pm

2 stops37h 40m

Washington, D.C. Dulles Intl

Mon 4/20

5:07 pm-9:45 pm

2 stops41h 38m

$1,081

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Mon 5/4

1:40 pm-9:45 am

2 stops55h 05m

Washington, D.C. Dulles Intl

Sun 7/12

1:20 pm-3:50 pm

1 stop39h 30m

$1,123

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 5/26

11:35 am-7:34 am

2 stops30h 59m

Washington, D.C. Dulles Intl

Tue 6/2

5:35 pm-10:25 am

2 stops29h 50m

$1,144

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/7

9:50 am-11:32 pm

2 stops24h 42m

Washington, D.C. Dulles Intl

Thu 7/16

1:30 pm-11:35 pm

1 stop23h 05m

$1,179

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 4/29

4:45 pm-9:45 am

2 stops52h 00m

Washington, D.C. Dulles Intl

Mon 6/8

1:20 pm-3:50 pm

1 stop39h 30m

$1,180

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 3/4

1:40 pm-2:45 pm

2 stops37h 05m

Washington, D.C. Dulles Intl

Fri 4/24

1:20 pm-3:35 pm

1 stop39h 15m

$1,184

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 4/29

5:00 pm-9:45 am

2 stops51h 45m

Washington, D.C. Dulles Intl

Wed 6/3

1:20 pm-3:50 pm

1 stop39h 30m

$1,196

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Thu 4/23

3:15 pm-2:30 pm

2 stops34h 15m

Washington, D.C. Dulles Intl

Wed 5/6

8:20 pm-7:55 am

2 stops24h 35m

$1,230

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 54 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, June is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $934). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,137). 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.

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 March 1, 2026.

It’s optimal to fly from Thailand to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Thailand to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Thailand to Dulles Intl. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Thailand to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 March 1, 2026.
Read reviews from past customers who have flown Korean Air, ANA, and Qatar Airways 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
1,195 reviews

Overall

8.4

Entertainment

8.2

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

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
1,195 reviews
Korean Air
8.4
Very good
1,195 reviews

Overall

8.4

Entertainment

8.2

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

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
8.4
Very good
1,107 reviews
Korean Air
8.4
Very good
1,195 reviews

Overall

8.4

Entertainment

8.2

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

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
3,745 reviews
Korean Air
8.4
Very good
1,195 reviews

Overall

8.4

Entertainment

8.2

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

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
9,375 reviews
Korean Air
8.4
Very good
1,195 reviews

Overall

8.4

Entertainment

8.2

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

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?

    EVA Air, Delta, and Qatar Airways can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 25h 55m. Your travel time can differ by up to 11h 14m. 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 IndiGo, with whom users have recently found tickets for as low as $471. However, be on the lookout for offers from SAUDIA 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, Chiang Mai - Washington, D.C. Dulles Intl and Bangkok Don Mueang Intl - 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, June is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $934). Flying from Thailand to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,137). 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
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Fredericksburg
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Manassas
Bowie
Largo
Clinton
Towson

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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 2,558,603 searches. Data last updated March 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,040Average$1,219FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,065Average$1,172FlexibilityNo cancel feeOn-time81%
ANACheapest$1,109Average$1,286FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,142Average$1,172FlexibilityNo cancel feeOn-time68%

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