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$431+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
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 July 23, 2026.

This Etihad Airways 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:35 pm
IAD
-
BKK
1 stop20h 45m
Etihad Airways
Thu 11/198:50 pm
BKK
-
IAD
1 stop24h 15m
Etihad Airways
Deal found 7/23$916
This Etihad Airways 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:35 pm
IAD
-
BKK
1 stop28h 00m
Etihad Airways
Sat 11/212:40 pm
BKK
-
IAD
1 stop30h 25m
Etihad Airways
Deal found 7/23$919
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 8/63:10 pm
IAD
-
BKK
1 stop34h 00m
Etihad Airways
Thu 9/39:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 7/22$920
This ITA Airways 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:30 pm
IAD
-
BKK
1 stop27h 55m
ITA Airways
Wed 9/1612:25 pm
BKK
-
IAD
1 stop37h 05m
ITA Airways
Deal found 7/21$921
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:00 pm
IAD
-
HKT
1 stop23h 45m
Qatar Airways
Fri 10/3011:55 pm
HKT
-
IAD
1 stop28h 00m
Qatar Airways
Deal found 7/23$927
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.
Sun 9/1310:35 pm
IAD
-
BKK
2 stops45h 50m
Multiple Airlines
Fri 10/912:25 pm
BKK
-
IAD
2 stops37h 45m
Multiple Airlines
Deal found 7/22$928
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:35 pm
IAD
-
BKK
1 stop28h 00m
Etihad Airways
Sat 11/212:40 pm
BKK
-
IAD
1 stop30h 25m
Etihad Airways
Deal found 7/23$929
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Fri 8/283:10 pm
IAD
-
BKK
1 stop21h 45m
Etihad Airways
Mon 8/313:55 pm
BKK
-
IAD
1 stop28h 50m
Etihad Airways
Deal found 7/18$930
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.
Sun 8/239:00 pm
IAD
-
HKT
1 stop23h 45m
Qatar Airways
Fri 9/119:20 am
HKT
-
IAD
1 stop34h 25m
Qatar Airways
Deal found 7/22$930
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:10 pm
IAD
-
BKK
1 stop34h 00m
Etihad Airways
Fri 9/49:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 7/22$933
This Gotogate deal was found by Cheapflights users on 7/20. 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 8/163:10 pm
IAD
-
BKK
1 stop40h 00m
Etihad Airways
Mon 8/313:55 pm
BKK
-
IAD
1 stop28h 50m
Etihad Airways
Deal found 7/20$934
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 11/268:05 pm
IAD
-
BKK
1 stop28h 10m
Qatar Airways
Wed 12/92:00 am
BKK
-
IAD
1 stop25h 55m
Qatar Airways
Deal found 7/22$935

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 July 23, 2026.

Round-trip from

$916
(Etihad Airways)

One-way from

$431
(eDestinos)

Popular in

December

Cheapest in

September

Average price

$1,287
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. 8% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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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 July 23, 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.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 11/5

2:30 pm-4:30 am

1 stop26h 00m

Bangkok Suvarnabhumi

Thu 11/19

10:10 pm-11:45 am

1 stop25h 35m

$988

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Sat 10/24

3:10 pm-11:50 pm

1 stop21h 40m

Phuket City

Sat 10/31

2:40 am-10:05 am

1 stop42h 25m

$999

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 1/15

8:05 pm-1:05 pm

1 stop29h 00m

Bangkok Suvarnabhumi

Sat 1/30

6:55 pm-8:30 am

1 stop25h 35m

$1,009

Washington, D.C.Chiang Rai

IAD - CEI

IADCEI

Washington, D.C. Dulles Intl

Wed 9/2

3:10 pm-1:10 pm

2 stops35h 00m

Chiang Rai

Wed 9/9

1:40 pm-9:45 am

2 stops31h 05m

$1,067

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Wed 9/16

3:10 pm-7:10 am

2 stops29h 00m

Ko Samui

Wed 9/23

5:55 pm-9:45 am

2 stops26h 50m

$1,073

Washington, D.C.Chiang Rai

IAD - CEI

IADCEI

Washington, D.C. Dulles Intl

Thu 11/5

8:05 pm-1:55 pm

2 stops29h 50m

Chiang Rai

Thu 11/12

6:55 pm-3:55 pm

2 stops33h 00m

$1,077

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 10/7

6:00 am-9:45 pm

2 stops28h 45m

Bangkok Suvarnabhumi

Wed 12/2

9:40 am-11:33 pm

2 stops25h 53m

$1,081

Washington, D.C.Rayong

IAD - UTP

IADUTP

Washington, D.C. Dulles Intl

Thu 10/22

3:10 pm-4:50 pm

2 stops62h 40m

Utapao Rayong Pattaya

Mon 11/2

1:00 pm-9:05 am

2 stops56h 05m

$1,094

Washington, D.C.Rayong

IAD - UTP

IADUTP

Washington, D.C. Dulles Intl

Thu 10/22

3:10 pm-4:50 pm

2 stops38h 40m

Utapao Rayong Pattaya

Mon 11/2

1:00 pm-9:05 am

3 stops32h 05m

$1,101

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 8/18

9:00 pm-7:45 am

1 stop23h 45m

Phuket City

Fri 8/28

9:20 am-3:40 pm

1 stop41h 20m

$1,121

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $955). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $1,557). 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 Washington, D.C. Dulles Intl Airport to Thailand?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Thailand may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 July 23, 2026.
Peruse reviews from past customers who have flown with ANA,Emirates, andTurkish 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
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.
ANA
8.3
Very good
1,276 reviews
ANA
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.
Emirates
8.1
Very good
3,634 reviews
ANA
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.
Turkish Airlines
7.4
Good
4,453 reviews
ANA
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.
Qatar Airways
7.3
Good
3,747 reviews
ANA
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.
Etihad Airways
7.3
Good
1,486 reviews
ANA
8.3
Very good
1,276 reviews

Crew

8.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

IAH - HND

Outstanding service on board. Loved that we got to use Polaris Lounge at IAH. On time and terrific trip.

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 $999, Turkish Airlines can have you in Thailand from Washington, D.C. Dulles Intl Airport in 21h 40m. Airlines will cover a distance of 9167 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 $401 on Etihad Airways. Other airlines that offer cheap prices include AIR PREMIA from $402 and Turkish Airlines from $419 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $955). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $1,557). 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$732Average$903FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$741Average$1,286FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$784Average$871FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$786Average$1,213FlexibilityNo cancel feeOn-time75%
DeltaCheapest$798Average$1,228FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$816Average$1,155FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$833Average$1,109FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$878Average$1,157FlexibilityNo cancel feeOn-time75%
ANACheapest$897Average$1,062FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$2,068FlexibilityNo cancel feeOn-time62%

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