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$458+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Bangkok are usually found in October or September, booked 22 days in advance, depart on a Saturday or Tuesday and return on a Sunday

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 December 15, 2025.

This JetBlue deal was found by Cheapflights users on 12/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:05 pmIAD - BKK
1 stop22h 10mJetBlue
Thu 1/153:00 amBKK - IAD
1 stop24h 55mJetBlue
Deal found 12/15$923
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:20 pmIAD - BKK
1 stop28h 50mUnited Airlines
Fri 1/164:55 pmBKK - IAD
2 stops26h 19mUnited Airlines
Deal found 12/15$980
This KAYAK deal was found by Cheapflights users on 12/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:30 pmIAD - BKK
1 stop31h 10mTurkish Airlines
Sat 1/175:50 amBKK - IAD
1 stop41h 55mTurkish Airlines
Deal found 12/15$1,074
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:20 amIAD - BKK
2 stops32h 50mUnited Airlines
Wed 12/319:10 amBKK - IAD
2 stops32h 12mUnited Airlines
Deal found 12/14$1,133
This FlightHub deal was found by Cheapflights users on 12/14. 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.
Sun 12/282:35 pmIAD - BKK
1 stop20h 50mEtihad Airways
Sat 1/317:35 pmBKK - IAD
2 stops49h 30mEtihad Airways
Deal found 12/14$1,212
This KAYAK deal was found by Cheapflights users on 12/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:35 pmIAD - BKK
1 stop39h 25mEtihad Airways
Wed 1/218:55 amBKK - IAD
1 stop36h 10mEtihad Airways
Deal found 12/13$1,228
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:22 pmIAD - BKK
2 stops32h 03mUnited Airlines
Tue 1/134:55 pmBKK - IAD
2 stops44h 04mUnited Airlines
Deal found 12/13$1,236
This Ovago deal was found by Cheapflights users on 12/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:20 pmIAD - BKK
1 stop30h 10mANA
Sun 12/219:10 amBKK - IAD
1 stop36h 00mANA
Deal found 12/14$1,244
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:10 pmIAD - BKK
2 stops38h 10mUnited Airlines
Wed 1/147:10 amBKK - IAD
2 stops26h 03mUnited Airlines
Deal found 12/13$1,249
This Mytrip deal was found by Cheapflights users on 12/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:35 pmIAD - DMK
2 stops30h 10mMultiple Airlines
Wed 1/142:35 amDMK - IAD
2 stops29h 51mMultiple Airlines
Deal found 12/14$1,695
This Mytrip deal was found by Cheapflights users on 12/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmIAD - DMK
2 stops25h 45mMultiple Airlines
Tue 1/132:35 amDMK - IAD
2 stops29h 51mMultiple Airlines
Deal found 12/13$1,730
This Mytrip deal was found by Cheapflights users on 12/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmIAD - DMK
2 stops25h 45mMultiple Airlines
Sat 1/176:15 amDMK - IAD
3 stops26h 39mMultiple Airlines
Deal found 12/14$1,743

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 December 15, 2025.

Round-trip from

$882
(Kiwi.com)

One-way from

$458
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,467
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. 4% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 15, 2025.
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

Dulles Intl

Fly to

Bangkok

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/27

6:00 am-11:20 pm

2 stops29h 20m

Bangkok Suvarnabhumi

Wed 2/4

12:55 am-4:46 pm

2 stops27h 51m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/29

7:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Wed 2/11

12:55 am-11:50 am

2 stops22h 55m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/7

12:40 pm-9:45 am

3 stops34h 05m

Bangkok Suvarnabhumi

Tue 4/21

9:35 am-5:33 am

2 stops30h 58m

$937

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/20

2:24 pm-11:25 am

3 stops33h 01m

Bangkok Suvarnabhumi

Tue 1/27

4:55 pm-3:40 pm

2 stops34h 45m

$945

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

8:36 am-12:20 am

2 stops27h 44m

Bangkok Suvarnabhumi

Wed 3/25

4:55 pm-7:29 am

2 stops25h 34m

$947

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 2/11

8:29 am-12:20 am

2 stops27h 51m

Bangkok Suvarnabhumi

Wed 3/11

4:55 pm-7:29 am

2 stops25h 34m

$947

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 1/19

10:32 pm-11:25 am

3 stops48h 53m

Bangkok Suvarnabhumi

Wed 1/28

4:55 pm-11:46 am

3 stops30h 51m

$949

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 1/28

3:19 pm-11:25 am

2 stops32h 06m

Bangkok Suvarnabhumi

Tue 2/3

4:55 pm-8:54 pm

2 stops39h 59m

$952

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

6:00 am-11:20 pm

2 stops29h 20m

Bangkok Suvarnabhumi

Thu 3/26

9:40 am-11:49 pm

2 stops25h 09m

$953

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 2/19

7:30 am-12:55 am

2 stops29h 25m

Bangkok Suvarnabhumi

Thu 3/5

9:40 am-12:24 am

2 stops26h 44m

$953

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 45 results
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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 December 12, 2025.

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 22 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 $628). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in June is currently the most expensive (average of $1,092). 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.

What is the cheapest time of day to fly from IAD to BKK?

Find hourly flight availability from Dulles Intl to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Bangkok in the afternoon. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Bangkok?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Bangkok. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Bangkok flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 15, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Bangkok, such as Korean Air, ANA, and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,186 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
ANA
8.4
Very good
1,023 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Qatar Airways
7.4
Good
3,683 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Etihad Airways
7.4
Good
1,332 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Turkish Airlines
7.3
Good
4,100 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 29h 20m. Fly via Delta or United Airlines 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 Canada and IndiGo. Air China is priced at 51% 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 Korean Air. According to our data, you can fly for as low as $394. Users have also found prices from $401 and $423 on Etihad Airways and Turkish Airlines, 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 Istanbul in terms of the most popular layover location on flights from Washington, D.C. Dulles Intl Airport to Bangkok. Abu Dhabi 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 Istanbul?

    The majority of Istanbul visitors spend their time at Taksim Square, Beyazit Meydani, and Laleli Camii. Taksim Square, Beyazit Meydani, and Laleli Camii can be visited by traveling about 20.8 mi, 21.7 mi, and 21.5 mi respectively from Istanbul. Travelers can rent a car at Istanbul for an average daily rate of $32 to make sightseeing during their layover a little easier.

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

    Most Abu Dhabi visitors opt to spend their time at Emirates Palace, Emirates Park Zoo, and Ferrari World Abu Dhabi. Emirates Palace, Emirates Park Zoo, and Ferrari World Abu Dhabi are located about 21.1 mi, 7.9 mi, and 4.5 mi, respectively from Abu Dhabi Zayed Intl. Those landing in Abu Dhabi looking to spend some time exploring during their layover can rent a car for about $30 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 Jeddah least frequently. Jeddah is followed by Seoul in terms of the least popular layover location on flights from Washington, D.C. Dulles Intl Airport to Bangkok. Tokyo sees the third fewest flights with layovers for the Washington, D.C. Dulles Intl Airport to Bangkok route.

  • 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 $628). Flying from Washington, D.C. Dulles Intl Airport to Bangkok in June is currently the most expensive (average of $1,092). 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$804FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$702Average$891FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$797Average$1,036FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$805Average$1,220FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$839Average$1,251FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$874Average$1,148FlexibilityNo cancel feeOn-time77%
ANACheapest$895Average$992FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$1,823FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,420FlexibilityNo cancel feeOn-time75%
DeltaCheapest$928Average$1,128FlexibilityNo cancel feeOn-timeN/A

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