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$479+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Jun 15 — Jun 221
Mon 6/15
Mon 6/22
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 May 16, 2026.

This FlightHub deal was found by Cheapflights users on 5/11. 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 12/910:30 pm
IAD
-
BKK
2 stops45h 40m
Multiple Airlines
Wed 12/1612:15 pm
BKK
-
IAD
1 stop38h 25m
Multiple Airlines
Deal found 5/11$868
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 9/243:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Tue 9/293:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 5/12$882
This Gotogate deal was found by Cheapflights users on 5/11. 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 9/93:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Sun 9/203:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 5/11$883
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 9/63:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Tue 9/223:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 5/11$884
This oojo deal was found by Cheapflights users on 5/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:10 pm
IAD
-
BKK
1 stop33h 40m
Etihad Airways
Mon 10/262:55 am
BKK
-
IAD
1 stop42h 10m
Etihad Airways
Deal found 5/13$886
This oojo deal was found by Cheapflights users on 5/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Sun 10/49:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Deal found 5/15$887
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/73:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Sat 10/109:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 5/13$888
This Justfly.com deal was found by Cheapflights users on 5/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Thu 10/89:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 5/13$889
This FlightHub deal was found by Cheapflights users on 5/11. 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 9/113:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Sat 9/263:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 5/11$890
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:10 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
Tue 9/153:05 pm
BKK
-
IAD
1 stop29h 40m
Etihad Airways
Deal found 5/14$891
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Sun 9/133:05 pm
BKK
-
IAD
1 stop29h 40m
Etihad Airways
Deal found 5/14$893
This IEagle deal was found by Cheapflights users on 5/12. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:55 am
IAD
-
DMK
1 stop37h 30m
Emirates
Fri 9/1111:50 pm
DMK
-
IAD
1 stop43h 50m
Emirates
Deal found 5/12$1,176

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 May 16, 2026.

Round-trip from

$882
(Kiwi.com)

One-way from

$479
(IEagle)

Popular in

December

Cheapest in

September

Average price

$1,126
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. 5% potential increase in price ($67 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 May 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 May 16, 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
Quickest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 9/20

11:05 am-7:05 pm

1 stop21h 00m

Bangkok Suvarnabhumi

Sat 10/3

8:00 pm-8:55 am

1 stop23h 55m

$1,050

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 10/24

9:00 pm-6:15 am

1 stop22h 15m

Bangkok Suvarnabhumi

Thu 11/19

3:00 am-3:55 pm

1 stop24h 55m

$1,050

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 8/10

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Mon 8/31

11:50 pm-8:40 am

1 stop43h 50m

$1,238

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 10/20

10:55 am-7:25 pm

1 stop21h 30m

Bangkok Suvarnabhumi

Tue 11/24

7:45 pm-8:10 am

2 stops48h 25m

$1,289

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 8/10

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Thu 8/27

11:50 pm-8:40 am

1 stop43h 50m

$1,309

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 7/26

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Sat 8/15

11:50 pm-8:40 am

1 stop43h 50m

$1,425

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 7/28

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Wed 8/5

11:50 pm-8:40 am

1 stop43h 50m

$1,446

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Wed 7/22

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Sat 8/1

11:50 pm-8:40 am

1 stop43h 50m

$1,446

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 10/25

11:30 pm-6:10 am

2 stops43h 40m

Bangkok Suvarnabhumi

Fri 11/20

12:05 am-8:35 pm

2 stops56h 30m

$1,469

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 7/26

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Fri 7/31

11:50 pm-8:40 am

1 stop43h 50m

$1,553

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

Showing 1-10 of 44 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?

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 76 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bangkok (average of $665). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in January is currently the most expensive (average of $1,771). 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 much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Bangkok?

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 May 16, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Bangkok, such as ANA,Qatar Airways, andTurkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
ANA
8.3
Very good
1,210 reviews
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
Qatar Airways
7.4
Good
3,725 reviews
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
Turkish Airlines
7.4
Good
4,368 reviews
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
United Airlines
7.4
Good
9,726 reviews
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
Etihad Airways
7.3
Good
1,439 reviews
ANA
8.3
Very good
1,210 reviews

Crew

8.7

Entertainment

8.0

Boarding

8.5

Comfort

8.2

Food

7.7

Overall

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.

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 21h. Fly via Qatar Airways, Emirates, or TAP AIR PORTUGAL 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 $732, 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 32% 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. Seoul 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 Mandarin Oriental, Ferrari World Abu Dhabi, and Sheikh Zayed Mosque. Emirates Palace Mandarin Oriental, Ferrari World Abu Dhabi, and Sheikh Zayed Mosque can be visited by traveling about 21.1 mi, 4.5 mi, and 11.2 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 Seoul?

    Most Seoul visitors opt to spend their time at Dongdaemun Market, Lotte World, and Gwanghwamun. Dongdaemun Market, Lotte World, and Gwanghwamun are located about 31.6 mi, 35.7 mi, and 30.1 mi, respectively from Incheon Intl. Those landing in Seoul looking to spend some time exploring during their layover can rent a car for about $49 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 Tokyo 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bangkok (average of $665). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in January is currently the most expensive (average of $1,771). 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

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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 May 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$732Average$902FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$784Average$870FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$786Average$981FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$816Average$984FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$833Average$1,072FlexibilityNo cancel feeOn-time77%
Korean AirCheapest$834Average$1,035FlexibilityNo cancel feeOn-time81%
ANACheapest$896Average$1,005FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$1,854FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,313FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$933Average$1,168FlexibilityNo cancel feeOn-time69%

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