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$528+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
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 June 8, 2026.

This oojo deal was found by Cheapflights users on 6/7. 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.
Wed 9/23:10 pm
IAD
-
HKT
1 stop28h 30m
Etihad Airways
Fri 9/189:25 am
HKT
-
IAD
1 stop35h 20m
Etihad Airways
Deal found 6/7$1,008
This oojo deal was found by Cheapflights users on 6/7. 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 9/13:10 pm
IAD
-
HKT
1 stop21h 40m
Etihad Airways
Fri 9/119:25 am
HKT
-
IAD
1 stop35h 20m
Etihad Airways
Deal found 6/7$1,010
This Etihad Airways deal was found by Cheapflights users on 6/4. 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.
Tue 8/253:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Thu 9/39:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 6/4$1,015
This oojo deal was found by Cheapflights users on 6/6. 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 9/13:10 pm
IAD
-
HKT
1 stop21h 40m
Etihad Airways
Wed 9/309:20 pm
HKT
-
IAD
1 stop23h 25m
Etihad Airways
Deal found 6/6$1,015
This Etihad Airways deal was found by Cheapflights users on 6/4. 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.
Thu 8/273:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Thu 9/39:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 6/4$1,018
This Justfly.com deal was found by Cheapflights users on 6/4. 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.
Fri 10/163:10 pm
IAD
-
BKK
1 stop41h 05m
Etihad Airways
Mon 10/268:05 am
BKK
-
IAD
2 stops61h 00m
Etihad Airways
Deal found 6/4$1,019
This oojo deal was found by Cheapflights users on 6/7. 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.
Fri 11/2710:40 am
IAD
-
BKK
1 stop20h 45m
Qatar Airways
Sat 12/128:30 pm
BKK
-
IAD
1 stop23h 50m
Qatar Airways
Deal found 6/7$1,021
This FlightHub deal was found by Cheapflights users on 6/6. 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 10/79:35 am
IAD
-
BKK
2 stops47h 25m
Multiple Airlines
Mon 11/169:10 pm
BKK
-
IAD
2 stops44h 41m
Multiple Airlines
Deal found 6/6$1,023
This BusinessClass deal was found by Cheapflights users on 6/5. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:10 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
Sat 10/103:55 pm
BKK
-
IAD
1 stop28h 50m
Etihad Airways
Deal found 6/5$1,025
This Trip.com deal was found by Cheapflights users on 6/6. 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.
Mon 9/73:10 pm
IAD
-
CNX
2 stops43h 50m
Multiple Airlines
Thu 9/1710:30 pm
CNX
-
IAD
2 stops46h 15m
Multiple Airlines
Deal found 6/6$1,027
This oojo deal was found by Cheapflights users on 6/7. 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.
Wed 9/29:00 pm
IAD
-
HKT
2 stops25h 35m
Qatar Airways
Fri 9/189:20 am
HKT
-
IAD
1 stop41h 20m
Qatar Airways
Deal found 6/7$1,027
This FlightHub deal was found by Cheapflights users on 6/3. 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.
Fri 11/272:35 pm
IAD
-
BKK
1 stop39h 25m
Etihad Airways
Sat 12/125:40 pm
BKK
-
IAD
2 stops51h 25m
Etihad Airways
Deal found 6/3$1,028

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 June 8, 2026.

Round-trip from

$1,008
(oojo)

One-way from

$528
(oojo)

Popular in

December

Cheapest in

September

Average price

$1,374
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 ($111 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 8, 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

Fri 8/28

3:10 pm-12:10 pm

1 stop34h 00m

Bangkok Suvarnabhumi

Thu 12/17

10:00 am-9:05 am

2 stops59h 05m

$1,057

Washington, D.C.Krabi

IAD - KBV

IADKBV

Washington, D.C. Dulles Intl

Mon 11/2

8:05 pm-9:15 pm

2 stops37h 10m

Krabi

Tue 3/2

9:50 am-8:20 am

2 stops34h 30m

$1,059

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Wed 9/9

3:10 pm-7:10 am

2 stops29h 00m

Ko Samui

Thu 9/17

3:25 pm-9:45 am

2 stops29h 20m

$1,059

Washington, D.C.Chiang Rai

IAD - CEI

IADCEI

Washington, D.C. Dulles Intl

Thu 10/15

9:00 pm-1:10 pm

2 stops29h 10m

Chiang Rai

Mon 10/26

6:55 pm-4:55 pm

2 stops33h 00m

$1,094

Washington, D.C.Chiang Rai

IAD - CEI

IADCEI

Washington, D.C. Dulles Intl

Thu 10/15

9:00 pm-1:10 pm

2 stops29h 10m

Chiang Rai

Tue 10/27

2:25 pm-9:20 am

2 stops29h 55m

$1,094

Washington, D.C.Trat

IAD - TDX

IADTDX

Washington, D.C. Dulles Intl

Thu 9/24

3:10 pm-12:40 pm

2 stops34h 30m

Trat

Mon 9/28

1:10 pm-9:45 am

2 stops31h 35m

$1,181

Washington, D.C.Sukhothai

IAD - THS

IADTHS

Washington, D.C. Dulles Intl

Thu 9/17

3:10 pm-5:20 pm

2 stops39h 10m

Sukhothai

Mon 9/21

8:55 am-9:45 am

2 stops59h 50m

$1,199

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sat 9/5

9:00 pm-9:20 am

2 stops25h 20m

Chiang Mai

Thu 9/17

8:00 pm-3:40 pm

2 stops30h 40m

$1,206

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 10/27

11:15 am-8:15 pm

1 stop22h 00m

Bangkok Don Mueang Intl

Mon 11/2

11:00 am-8:10 am

1 stop33h 10m

$1,222

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 9/6

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Fri 9/25

12:10 pm-8:40 am

1 stop31h 30m

$1,222

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $651). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $3,359). 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 June 8, 2026.
Peruse reviews from past customers who have flown with ANA,Qatar Airways, 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
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
ANA
8.3
Very good
1,227 reviews
ANA
8.3
Very good
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
Qatar Airways
7.4
Good
3,729 reviews
ANA
8.3
Very good
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
Turkish Airlines
7.4
Good
4,409 reviews
ANA
8.3
Very good
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
United Airlines
7.4
Good
9,781 reviews
ANA
8.3
Very good
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
Etihad Airways
7.3
Good
1,450 reviews
ANA
8.3
Very good
1,227 reviews

Boarding

8.5

Comfort

8.2

Overall

8.3

Crew

8.7

Entertainment

7.9

Food

7.7

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.

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 $1,222, Etihad Airways can have you in Thailand from Washington, D.C. Dulles Intl Airport in 22h. Airlines will cover a distance of 8776 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 Korean Air. Other airlines that offer cheap prices include Etihad Airways from $401 and AIR PREMIA from $402 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $651). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $3,359). 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

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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 June 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$664Average$1,148FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$732Average$902FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$741Average$1,222FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$784Average$870FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$786Average$1,161FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$815Average$1,157FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$833Average$1,082FlexibilityNo cancel feeOn-time77%
ANACheapest$897Average$1,005FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$2,059FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,157FlexibilityNo cancel feeOn-time75%

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