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$441+ Cheap flights from Dulles Intl (IAD) to Thailand

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
مايو 18 — مايو 251
ن 5/18
ن 5/25
1 adult, Economy
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Cheap flight deals from Dulles Intl to Thailand

Cheapest flights from Dulles Intl to Thailand
Explore the most affordable flight options available from Dulles Intl to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on أبريل 18, 2026.

This CrystalTravel deal was found by Cheapflights users on 4/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 9/73:10 pm
IAD
-
BKK
1 stop28h 05m
Etihad Airways
خ 9/249:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 4/14$844
This SmartFares deal was found by Cheapflights users on 4/13. 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.
ن 5/43:10 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
ر 5/208:40 pm
BKK
-
IAD
1 stop24h 05m
Etihad Airways
Deal found 4/13$847
This CrystalTravel deal was found by Cheapflights users on 4/15. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
خ 4/302:05 pm
IAD
-
BKK
1 stop29h 40m
Etihad Airways
ج 5/159:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 4/15$850
This Gotogate deal was found by Cheapflights users on 4/14. 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.
ح 4/192:05 pm
IAD
-
BKK
1 stop42h 00m
Etihad Airways
ن 5/49:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 4/14$853
This Gotogate deal was found by Cheapflights users on 4/17. 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.
ج 5/13:10 pm
IAD
-
BKK
1 stop40h 50m
Etihad Airways
ح 5/179:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 4/17$856
This CrystalTravel deal was found by Cheapflights users on 4/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ح 5/103:10 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
ج 5/228:40 pm
BKK
-
IAD
1 stop24h 05m
Etihad Airways
Deal found 4/14$857
This CrystalTravel deal was found by Cheapflights users on 4/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ر 9/93:10 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
ر 9/239:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 4/17$860
This Gotogate deal was found by Cheapflights users on 4/14. 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.
ن 4/202:05 pm
IAD
-
BKK
1 stop29h 45m
Etihad Airways
ن 5/49:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 4/14$861
This FlightHub deal was found by Cheapflights users on 4/14. 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.
ر 12/910:30 pm
IAD
-
BKK
2 stops45h 40m
Multiple Airlines
ر 12/1612:15 pm
BKK
-
IAD
1 stop38h 25m
Multiple Airlines
Deal found 4/14$866
This Gotogate deal was found by Cheapflights users on 4/17. 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.
ح 4/192:05 pm
IAD
-
BKK
1 stop42h 00m
Etihad Airways
ث 5/199:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 4/17$868
This Fareboom deal was found by Cheapflights users on 4/15. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 4/209:00 pm
IAD
-
BKK
1 stop30h 15m
Qatar Airways
ح 4/262:30 am
BKK
-
IAD
1 stop26h 40m
Qatar Airways
Deal found 4/15$870
This oojo deal was found by Cheapflights users on 4/14. 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.
ر 5/63:10 pm
IAD
-
HKT
1 stop29h 40m
Etihad Airways
ر 5/139:25 am
HKT
-
IAD
1 stop35h 20m
Etihad Airways
Deal found 4/14$874

Find flight deals from Dulles Intl to Thailand

Keep the following information in mind while searching for Dulles Intl to Thailand flight deals. Data was last updated أبريل 18, 2026.

Round-trip from

$844
(CrystalTravel)

One-way from

$441
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$934
From Washington, D.C. Dulles Intl to Thailand
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Thailand
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Thailand 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 أبريل 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

ج 5/1

3:10 pm-6:20 pm

1 stop40h 10m

Phuket City

ث 5/19

9:25 am-9:45 am

1 stop35h 20m

$874

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

ر 5/6

3:10 pm-6:20 pm

1 stop40h 10m

Phuket City

خ 5/14

8:25 pm-9:45 am

1 stop24h 20m

$874

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

خ 5/7

3:10 pm-7:50 am

1 stop29h 40m

Phuket City

ن 5/11

8:55 am-9:45 am

1 stop35h 50m

$919

Washington, D.C.Chiang Rai

IAD - CEI

IADCEI

Washington, D.C. Dulles Intl

ن 10/12

9:00 pm-1:10 pm

2 stops29h 10m

Chiang Rai

ن 10/19

6:55 pm-3:40 pm

2 stops31h 45m

$1,047

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

ث 5/5

9:00 pm-6:50 am

1 stop22h 50m

Bangkok Suvarnabhumi

ث 5/19

12:35 pm-6:10 pm

2 stops40h 35m

$1,059

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

ن 5/4

9:00 pm-6:50 am

1 stop22h 50m

Bangkok Suvarnabhumi

ن 5/25

5:00 pm-6:10 pm

2 stops36h 10m

$1,079

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

خ 4/30

9:00 pm-6:50 am

1 stop22h 50m

Bangkok Suvarnabhumi

خ 5/28

5:00 pm-6:10 pm

2 stops36h 10m

$1,079

Washington, D.C.Rayong

IAD - UTP

IADUTP

Washington, D.C. Dulles Intl

خ 9/10

3:10 pm-4:50 pm

2 stops38h 40m

Utapao Rayong Pattaya

ن 9/14

1:00 pm-9:45 am

2 stops55h 45m

$1,151

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

ث 4/21

7:00 am-2:05 pm

2 stops44h 05m

Phuket City

ن 4/27

12:55 pm-6:10 pm

2 stops40h 15m

$1,182

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

ن 9/14

10:55 am-8:45 pm

1 stop22h 50m

Bangkok Don Mueang Intl

ث 10/13

12:10 pm-8:40 am

1 stop31h 30m

$1,184

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Dulles Intl to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Thailand

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Thailand?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $565). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $3,104). 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 Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated أبريل 18, 2026.
Peruse reviews from past customers who have flown with ANA,Qatar Airways, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Thailand 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.
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
ANA
8.4
Very good
1,179 reviews
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
Qatar Airways
7.4
Good
3,730 reviews
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
United Airlines
7.4
Good
9,604 reviews
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
Etihad Airways
7.3
Good
1,434 reviews
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
Turkish Airlines
7.3
Good
4,306 reviews
ANA
8.4
Very good
1,179 reviews

Boarding

8.6

Crew

8.7

Food

7.8

Overall

8.4

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Thailand. 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 Washington, D.C. Dulles Intl Airport to Thailand?

    For as low as $1,059, Etihad Airways can have you in Thailand from Washington, D.C. Dulles Intl Airport in 22h 50m. Airlines will cover a distance of 8792 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $394 on IndiGo. Other airlines that offer cheap prices include Korean Air from $394 and Etihad Airways from $401 one-way.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Thailand?

    While some choose either Washington, D.C. Dulles Intl - Bangkok Don Mueang Intl or Washington, D.C. Dulles Intl - Phuket City, Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi is the most popular route from Washington, D.C. Dulles Intl Airport to Thailand.

  • Can I find deals for flights from Dulles Intl to Thailand that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Thailand flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Thailand?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Thailand.

  • Can I find deals for business class flights from Dulles Intl to Thailand?

    Yes. Cheapflights offers flight deals from Dulles Intl to Thailand 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 Washington, D.C. Dulles Intl Airport to Thailand?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $565). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $3,104). 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

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.

Top 10 airlines flying from Dulles Intl to Thailand

Discover the top 10 airlines that operate flights from Dulles Intl to Thailand. 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 أبريل 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$592Average$877FlexibilityNo cancel feeOn-time67%
DeltaCheapest$664Average$1,144FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$673Average$1,215FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$784Average$870FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$785Average$1,083FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$822Average$1,164FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$835Average$1,113FlexibilityNo cancel feeOn-time77%
ANACheapest$896Average$1,005FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$2,017FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,313FlexibilityNo cancel feeOn-time75%

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