IAD - BKK

฿14,574 Find Cheap Flights from Washington Dulles Airport to Bangkok Suvarnabhumi Airport – Compare and Save

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 5/9. 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

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Everything you should know

Cheapest return fare
฿30,286
Typical prices: ฿30,973-฿37,640
เอทิฮัดแอร์เวย์
Sun 23/8Thu 3/9
IAD - BKK • 1 stop
Cheapest one-way flight
฿14,574
Typical prices: ฿15,746-฿18,761
เอทิฮัดแอร์เวย์
Sat 5/9
IAD - BKK • 1 stop
Top airlines
Cheapest • from ฿30,286 (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 ฿36,359 (return)
Shortest trip • 21h 08m (one-way)
Insights
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When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 21% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
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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

Sun 23 Aug - Thu 3 Sep
เอทิฮัดแอร์เวย์ Logo
15:10 - 12:10
IAD
-
BKK
34h 00m
1 stop
เอทิฮัดแอร์เวย์ Logo
21:00 - 09:45
BKK
-
IAD
23h 45m
1 stop
฿30,286เอทิฮัดแอร์เวย์
Sun 23 Aug - Mon 31 Aug
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:55
IAD
-
BKK
21h 45m
1 stop
เอทิฮัดแอร์เวย์ Logo
15:55 - 09:45
BKK
-
IAD
28h 50m
1 stop
฿30,286เอทิฮัดแอร์เวย์
Thu 13 Aug - Tue 6 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 06:45
IAD
-
BKK
28h 35m
1 stop
เอทิฮัดแอร์เวย์ Logo
21:00 - 09:45
BKK
-
IAD
23h 45m
1 stop
฿30,353เอทิฮัดแอร์เวย์
Thu 13 Aug - Thu 8 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 06:45
IAD
-
BKK
28h 35m
1 stop
เอทิฮัดแอร์เวย์ Logo
15:55 - 09:45
BKK
-
IAD
28h 50m
1 stop
฿30,353เอทิฮัดแอร์เวย์
Sat 28 Nov - Fri 18 Dec
เตอร์กิชแอร์ไลน์ Logo
13:30 - 04:30
IAD
-
BKK
27h 00m
1 stop
เตอร์กิชแอร์ไลน์ Logo
08:45 - 19:25
BKK
-
IAD
22h 40m
1 stop
฿30,420เตอร์กิชแอร์ไลน์
Sat 28 Nov - Wed 23 Dec
เตอร์กิชแอ��ร์ไลน์ Logo
13:30 - 04:30
IAD
-
BKK
27h 00m
1 stop
เตอร์กิชแอร์ไลน์ Logo
10:20 - 19:25
BKK
-
IAD
45h 05m
1 stop
฿30,420เตอร์กิชแอร์ไลน์
Sat 10 Oct - Thu 15 Oct
เตอร์กิชแอร์ไลน์ Logo
21:40 - 05:10
IAD
-
BKK
20h 30m
1 stop
เตอร์กิชแอร์ไลน์ Logo
11:15 - 19:45
BKK
-
IAD
43h 30m
1 stop
฿31,425เตอร์กิชแอร์ไลน์
Wed 6 Jan - Fri 29 Jan
Korean Air Logo
11:50 - 21:30
IAD
-
BKK
45h 40m
1 stop
Korean Air Logo
00:55 - 17:30
BKK
-
IAD
28h 35m
2 stops
฿32,028Korean Air
Thu 27 Aug - Fri 11 Sep
Korean Air Logo
10:16 - 23:35
IAD
-
BKK
26h 19m
2 stops
Korean Air Logo
23:30 - 11:05
BKK
-
IAD
22h 35m
1 stop
฿33,536Korean Air
Wed 2 Sep - Mon 14 Sep
Korean Air Logo
10:16 - 23:35
IAD
-
BKK
26h 19m
2 stops
Korean Air Logo
21:40 - 11:05
BKK
-
IAD
24h 25m
1 stop
฿34,273Korean Air
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 August.

Flight prices are below average for this route right now.

Flights to Bangkok Suvarnabhumi Airport from Washington, D.C. Dulles Intl Airport usually cost between ฿32,464 and ฿41,108 in August.
The lowest price found in the past 5 days was ฿30,286 on เอทิฮัดแอร์เวย์ (23 Aug–31 Aug).

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 ฿31,425 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is ฿50,823 and ฿42,347 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 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low season

August

Cheapest flight

฿14,574
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (38% 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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport was ฿14,574 for a one-way ticket and ฿30,286 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 ฿52,616 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 ฿34,388 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 1222 reviews
8.3Comfort
8.2Entertainment
8.1Food
8.5Boarding
8.7Crew
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.

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 did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

Excellent service, love the extra amenities (water bottles, blankets, etc.).

It would be better if flight crew can clearly communicate in english. But they are kind and accommodating. Food is good, especially the sandwiches on the self-serving snack trays. They are better than the ones served. Boarding was organized.

They had the same movie choice as my previous flight, not much of a choice, movies were not up to date, music was uninteresting. Other than sitting on the ground for 40 minutes after boarding the plane, with pilot telling us that they couldn't load the plane because of rain, (bullshit) We finally got into Bangkok of course 40 minutes late.

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

After the gauntlet of unnecessary security, and the two mile jog to make the flight, the flight was delayed 20 minutes on the ground for takeoff.. However, once in the air, the crew gave its usual excellent service.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

the cabin was kept too hot. couldn't sleep as a result

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

Awful seating. Bad food. Staff only have one bottle of water and no cans.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

My flight was canceled 1 minute before boarding. The customer service was owful, no one could tell us what was going happened. I spent 30hrs instead of 15 from Washington DC to Brussels. No apologie or help

Boeing 777 is a bad choice for a such a long flight.

I wouldn't know what the flight was like. AI canceled my flight reservation!! There's no way to speak to an actual human to fix the issue! NEVER AGAIN! ALWAYS BOOK YOUR FLIGHT DIRECTLY WITH THE AIRLINE NEVER GO THROUGH KAYAK OR JUSTFLY.COM!!

I’ve been traveling for 20 years. I tried Turkish airline for the first time horrible horrible service and it would be my last time even if I get offer for a free ticket, I will not accept it. They have races and the worst Flight attendant

It wasn't good. I didn’t understand. They changed 320 dollars for 2 luggage. My ticket was regular and I paid almost 1200.00 dollars. Why they did charge? I want my money back.. thanks Yılmaz polat

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