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$428+ Cheap flights from Dulles Intl (IAD) to Bangkok

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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Dulles Intl to Bangkok

Cheapest flights from Dulles Intl to Bangkok
Explore the most affordable flight options available from Dulles Intl to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/91:20 pm
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Thu 8/2710:45 pm
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Deal found 3/20$836
This AIR PREMIA deal was found by Cheapflights users on 3/20. 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 AIR PREMIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/71:20 pm
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Sun 8/3010:45 pm
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Deal found 3/20$837
This Gotogate deal was found by Cheapflights users on 3/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Wed 10/73:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 3/21$838
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/203:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Thu 2/42:40 pm
BKK
-
IAD
1 stop30h 25m
Etihad Airways
Deal found 3/18$839
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/43:10 pm
IAD
-
BKK
1 stop28h 20m
Etihad Airways
Fri 5/155:50 pm
BKK
-
IAD
2 stops50h 55m
Etihad Airways
Deal found 3/18$841
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Wed 10/213:05 pm
BKK
-
IAD
1 stop29h 40m
Etihad Airways
Deal found 3/18$842
This Etihad Airways deal was found by Cheapflights users on 3/22. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/292:20 pm
IAD
-
BKK
1 stop41h 15m
Etihad Airways
Wed 4/299:40 am
BKK
-
IAD
1 stop35h 05m
Etihad Airways
Deal found 3/22$843
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/123:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Wed 5/273:55 pm
BKK
-
IAD
1 stop28h 50m
Etihad Airways
Deal found 3/18$844
This KAYAK deal was found by Cheapflights users on 3/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:10 pm
IAD
-
BKK
1 stop28h 20m
Etihad Airways
Fri 5/293:55 pm
BKK
-
IAD
1 stop28h 50m
Etihad Airways
Deal found 3/22$846
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:10 pm
IAD
-
BKK
1 stop40h 00m
Etihad Airways
Tue 9/229:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 3/20$847
This CrystalTravel deal was found by Cheapflights users on 3/20. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:05 pm
IAD
-
BKK
1 stop29h 40m
Etihad Airways
Sun 4/129:00 pm
BKK
-
IAD
1 stop24h 25m
Etihad Airways
Deal found 3/20$848
This oojo deal was found by Cheapflights users on 3/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/82:05 pm
IAD
-
BKK
1 stop41h 05m
Etihad Airways
Sat 4/183:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 3/20$849

Find flight deals from Dulles Intl to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 23, 2026.

Round-trip from

$836
(Kiwi.com)

One-way from

$428
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$993
From Washington, D.C. Dulles Intl to Bangkok
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Bangkok
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Bangkok 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 23, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Bangkok 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 4/30

3:10 pm-6:30 am

1 stop28h 20m

Bangkok Suvarnabhumi

Mon 5/4

3:55 pm-9:45 am

1 stop28h 50m

$846

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 4/26

7:00 am-10:00 am

2 stops40h 00m

Bangkok Suvarnabhumi

Sun 5/24

11:00 am-4:48 am

2 stops28h 48m

$1,056
Quickest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 4/22

5:55 pm-9:35 am

2 stops28h 40m

Bangkok Suvarnabhumi

Thu 5/7

3:45 pm-5:40 am

2 stops24h 55m

$1,246

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 4/5

10:55 am-7:35 am

1 stop33h 40m

Bangkok Suvarnabhumi

Tue 4/14

5:00 pm-8:40 am

2 stops50h 40m

$1,257

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 4/30

7:00 am-11:35 pm

2 stops29h 35m

Bangkok Suvarnabhumi

Mon 6/1

9:40 pm-12:13 am

2 stops37h 33m

$1,280

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 8/7

10:23 pm-11:55 pm

2 stops38h 32m

Bangkok Suvarnabhumi

Tue 9/1

9:35 am-3:50 pm

1 stop41h 15m

$1,280

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/7

7:59 pm-4:20 pm

2 stops33h 21m

Bangkok Suvarnabhumi

Fri 5/8

10:50 am-3:05 pm

2 stops39h 15m

$1,310

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 8/24

9:00 pm-11:05 am

2 stops27h 05m

Bangkok Don Mueang Intl

Mon 11/16

11:50 am-3:55 pm

2 stops40h 05m

$1,322

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 4/5

9:45 pm-6:30 am

2 stops45h 45m

Bangkok Don Mueang Intl

Sat 4/25

3:15 am-10:50 am

1 stop42h 35m

$1,412

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/7

9:55 am-9:35 am

3 stops36h 40m

Bangkok Suvarnabhumi

Thu 4/30

9:35 am-1:24 am

2 stops50h 49m

$1,415

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 45 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok 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 Bangkok

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Bangkok?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Bangkok. Price data was last updated on March 13, 2026.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Bangkok may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bangkok (average of $627). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in December is currently the most expensive (average of $917). 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 Bangkok

Get insights into the airlines that provide service to Bangkok. 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 Bangkok. Reviews last updated March 23, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Bangkok, such as ANA,Qatar Airways, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
ANA
8.4
Very good
1,138 reviews
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Qatar Airways
7.4
Good
3,733 reviews
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
United Airlines
7.4
Good
9,459 reviews
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Etihad Airways
7.3
Good
1,429 reviews
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Turkish Airlines
7.3
Good
4,269 reviews
ANA
8.4
Very good
1,138 reviews

Overall

8.4

Boarding

8.5

Food

7.8

Crew

8.7

Comfort

8.2

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Bangkok. 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 Bangkok?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Bangkok in 28h 20m. Fly via Etihad Airways, United Airlines, or Emirates to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to Bangkok is about 8792 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Bangkok round-trip?

    Air China, at $565, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Bangkok.Alternate airlines to your destination round-trip include AIR PREMIA and Etihad Airways. Air China is priced at 48% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for IndiGo. According to our data, you can fly for as low as $394. Users have also found prices from $394 and $401 on Korean Air and Etihad Airways, respectively.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Bangkok?

    Most of the time, Washington, D.C. Dulles Intl Airport to Bangkok flights that have layovers will stop in Doha. Doha is followed by Abu Dhabi in terms of the most popular layover location on flights from Washington, D.C. Dulles Intl Airport to Bangkok. Tokyo ranks third in terms of the most popular layover location on Washington, D.C. Dulles Intl Airport to Bangkok flights.

  • What are some popular points of interest to see during a layover in Abu Dhabi?

    The majority of Abu Dhabi visitors spend their time at Emirates Palace, Emirates Park Zoo, and Ferrari World Abu Dhabi. Emirates Palace, Emirates Park Zoo, and Ferrari World Abu Dhabi can be visited by traveling about 21.1 mi, 7.9 mi, and 4.5 mi respectively from Abu Dhabi Zayed Intl. Travelers can rent a car at Abu Dhabi Zayed Intl for an average daily rate of $25 to make sightseeing during their layover a little easier.

  • What are points of interest worth seeing during a layover in Tokyo?

    Most Tokyo visitors opt to spend their time at Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower. Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower are located about 10.3 mi, 7.9 mi, and 7.9 mi, respectively from Tokyo Haneda. Those landing in Tokyo looking to spend some time exploring during their layover can rent a car for about $56 per day.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Bangkok flights?

    Flights departing from Washington, D.C. Dulles Intl Airport and landing in Bangkok layover in Istanbul least frequently. Istanbul is followed by Seoul in terms of the least popular layover location on flights from Washington, D.C. Dulles Intl Airport to Bangkok.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Bangkok 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 Bangkok?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bangkok (average of $627). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in December is currently the most expensive (average of $917). 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 Bangkok

Discover the top 10 airlines that operate flights from Dulles Intl to Bangkok. 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$864FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$784Average$873FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$786Average$993FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$823Average$998FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$834Average$1,006FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$835Average$1,137FlexibilityNo cancel feeOn-time77%
ANACheapest$896Average$1,007FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$1,869FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,313FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$933Average$1,158FlexibilityNo cancel feeOn-time69%

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