IAD - BKK

฿18,079 Find Cheap Flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Suvarnabhumi departing on 14/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bangkok Suvarnabhumi Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
฿33,543
Typical prices: ฿34,753-฿28,476
เอทิฮัดแอร์เวย์
Thu 15/10Sun 25/10
IAD - BKK • 1 stop
Cheapest one-way flight
฿18,079
Typical prices: ฿16,216-฿21,349
เอทิฮัดแอร์เวย์
Fri 14/8
IAD - BKK • 1 stop
Top airlines
Cheapest • from ฿33,543 (return)
Best reviews • 8.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
Not available
There are currently no direct flights between Dulles Intl and Suvarnabhumi. You’ll need at least 1 connection.
Insights
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Top stopover airports
Cheapest • Avg ฿37,415 (return)
Shortest trip • 20h 45m (one-way)
Insights
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When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 19% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 11% price drop
Most popular
Good to know
Good to know
+1
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Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Suvarnabhumi!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Suvarnabhumi (IAD-BKK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Suvarnabhumi that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Dulles Intl to Suvarnabhumi

Thu 15 Oct - Sun 25 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 12:10
IAD
-
BKK
34h 00m
1 stop
เอทิฮัดแอร์เวย์ Logo
20:50 - 10:05
BKK
-
IAD
24h 15m
1 stop
฿33,543เอทิฮัดแอร์เวย์
Fri 9 Oct - Sun 7 Feb
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:50
IAD
-
BKK
21h 40m
1 stop
เอทิฮัดแอร์เวย์ Logo
20:50 - 09:05
BKK
-
IAD
24h 15m
1 stop
฿33,576เอทิฮัดแอร์เวย์
Tue 24 Nov - Tue 15 Dec
เอทิฮัดแอร์เวย์ Logo
14:35 - 23:20
IAD
-
BKK
20h 45m
1 stop
เอทิฮัดแอร์เวย์ Logo
17:40 - 09:05
BKK
-
IAD
51h 25m
2 stops
฿33,608เอทิฮัดแอร์เวย์
Mon 10 Aug - Thu 10 Dec
เอทิฮัดแอร์เวย์ Logo
15:10 - 18:10
IAD
-
BKK
40h 00m
1 stop
เอทิฮัดแอร์เวย์ Logo
10:00 - 09:05
BKK
-
IAD
59h 05m
2 stops
฿33,641เอทิฮัดแอร์เวย์
Fri 28 Aug - Sat 5 Sep
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:50
IAD
-
BKK
21h 40m
1 stop
เอทิฮัดแอร์เวย์ Logo
09:15 - 09:45
BKK
-
IAD
35h 30m
1 stop
฿33,674เอทิฮัดแอร์เวย์
Fri 9 Oct - Sat 6 Feb
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:50
IAD
-
BKK
21h 40m
1 stop
เอทิฮัดแอร์เวย์ Logo
12:25 - 09:05
BKK
-
IAD
56h 40m
2 stops
฿33,706เอทิฮัดแอร์เวย์
Fri 16 Oct - Sun 1 Nov
เอทิฮัดแอร์เวย์ Logo
15:10 - 12:10
IAD
-
BKK
34h 00m
1 stop
เอทิฮัดแอร์เวย์ Logo
08:30 - 10:05
BKK
-
IAD
36h 35m
1 stop
฿33,739เอทิฮัดแอร์เวย์
Sat 10 Oct - Thu 4 Feb
Qatar Airways Logo
21:00 - 07:15
IAD
-
BKK
23h 15m
1 stop
Qatar Airways Logo
02:00 - 15:55
BKK
-
IAD
25h 55m
1 stop
฿33,772Qatar Airways
Sun 8 Nov - Mon 16 Nov
เอทิฮัดแอร์เวย์ Logo
14:35 - 11:45
IAD
-
BKK
33h 10m
1 stop
เอทิฮัดแอร์เวย์ Logo
17:40 - 09:05
BKK
-
IAD
51h 25m
2 stops
฿33,805เอทิฮัดแอร์เวย์
Thu 15 Oct - Wed 28 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:50
IAD
-
BKK
21h 40m
1 stop
เอทิฮัดแอร์เวย์ Logo
12:25 - 10:05
BKK
-
IAD
56h 40m
2 stops
฿33,837เอทิฮัดแอร์เวย์
Booking Insights

KAYAK's insights & trends for Dulles Intl to Suvarnabhumi flights

Get data-powered insights and trends into flights from Dulles Intl to Suvarnabhumi to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport departing in October.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport is September, where tickets cost ฿31,222 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is ฿47,961 and ฿39,460 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport, you should book around 2 weeks before departure, which saves you about 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight฿18,079
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (36% more expensive on average)
Flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

When to book flights from Dulles Intl to Suvarnabhumi

Are your dates flexible? Find out the best times to travel from Dulles Intl to Suvarnabhumi based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Bangkok Suvarnabhumi Airport flights

  • What is the most suitable means of transport to the city center from BKK airport?

    The Airport Rail Link is both the quickest and most cost-effective method to go from the airport to the heart of Bangkok. Follow the signs that direct you to the railway station which is situated on the ground level of the building's basement.

  • Are there car rental companies at BKK airport?

    There are a number of local and international automobile rental companies located at Bangkok Suvarnabhumi Airport. Some of these companies include Avis, Budget, Europcar, and Chic Car Rent. The rental cars are situated in close proximity to the parking lot at BKK airport.

  • Is there a place to sleep at Dulles airport?

    At Washington Dulles International Airport, Sleepbox has installed sixteen pods that are offered for rent on an hourly basis. They are located in the A concourse. The quickest and most convenient way to find them is by taking the train to concourse A. Proceed forward to the escalator and the Sleepbox will be on the right side of the stairs

  • Are there parking services at IAD airport?

    Long-term parking options at Dulles International Airport include the terminal daily lot, garages 1 and 2, economy lot, and valet parking. You also have the option to reserve a parking place in advance at an off-site long-term parking facility. This establishment has daily rates as low as $6 and provides free shuttle service to and from the airport.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport was ฿18,079 for a one-way ticket and ฿33,543 for a return.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Bangkok Suvarnabhumi Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Bangkok, Korean Air or เตอร์กิชแอร์ไลน์?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Bangkok are Korean Air and เตอร์กิชแอร์ไลน์. With an average price for the route of ฿51,070 and an overall rating of 8.4, Korean Air is the most popular choice. เตอร์กิชแอร์ไลน์ is also a great choice for the route, with an average price of ฿33,557 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok Suvarnabhumi Airport from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Bangkok Suvarnabhumi Airport with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bangkok Suvarnabhumi Airport from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport

  • Make use of the lounges available at both the Dulles International Airport (IAD) and the Suvarnabhumi Airport (BKK). They may be found in both airports and offer charging areas, internet access, and showers.
  • At IAD airport, there are a total of eight designated rooms for nursing parents. These rooms are spread out over the airport and are intended to provide privacy and comfort for nursing parents. You can find them on the arrivals level just across from the baggage claim numbers 2, 6, 11, and 14.
  • There are several pet relief areas at Dulles International Airport. Two of these areas are situated outside the terminal (before security), while the other two are located on the concourses (post-security).
  • After passing through immigration and customs at BKK airport, you will find that the airport terminal is dotted with ATMs. There is a charge of 220 baht associated with each withdrawal. Except for Citibank and AEON, all of the Thai banks have the same fee structure. Citibank withdrawals are free for Citibank cardholders. At Bangkok's Suvarnabhumi Airport, there are a number of currency exchange kiosks that are open all day, every day. These booths are located near the arrivals area. Upon arrival, you will have the opportunity to exchange part of your foreign currency for Thai baht. This will allow you to pay for the cab ride to your accommodation.
  • If a passenger needs wheelchair assistance through the airport, they are recommended to make a request for one when booking or at least 24 hours before their scheduled arrival time. There are no additional fees for using the wheelchair service that Bangkok Airways provides.

Reviews of the top airlines flying from Dulles Intl to Suvarnabhumi

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Bangkok. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Suvarnabhumi? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1218 reviews
8.5Boarding
8.2Entertainment
8.3Comfort
8.7Crew
8.1Food
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

No control at all at the gate , passengers were not cuing up, , some were very loud , no action taken by the attendants . It looked more like a heard of animals then humans boarding a plane .

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

Everything you need to know for your flight from Dulles Intl to Suvarnabhumi

Information on your arrival and departure airports