IAD - BKK

$457 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 Bangkok departing on 3/23. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok.
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Everything you should know

Cheapest round-trip
$875
Typical prices: $1,125-$1,563
Etihad Airways
Thu 4/30Sun 5/31
IAD - BKK • 1 stop
Cheapest one-way
$457
Typical prices: $547-$705
Multiple Airlines
Mon 3/23
IAD - BKK • 3 stops
Video guide: How to find cheap flights to Bangkok
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Top airlines
Delta
Cheapest • from $928 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
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Insights
When to travel
October
Cheapest • 15% price drop
December
Most popular
Good to know
Good to know
+1
+1
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Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Bangkok 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 round-trip flight deals from Dulles Intl to Bangkok

Thu, Apr 30 - Sun, May 31
Etihad Airways Logo
3:35 pm - 6:30 am
IAD
-
BKK
27h 55m1 stop
Etihad Airways Logo
9:10 am - 9:45 am
BKK
-
IAD
35h 35m1 stop
$875Etihad Airways
Mon, Feb 16 - Wed, Mar 11
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
10:00 am - 10:05 am
BKK
-
IAD
59h 05m2 stops
$877Etihad Airways
Sun, Jan 18 - Mon, Feb 2
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
8:55 am - 9:05 am
BKK
-
IAD
36h 10m1 stop
$880Etihad Airways
Fri, Jan 16 - Mon, Feb 16
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
7:35 pm - 9:05 am
BKK
-
IAD
49h 30m2 stops
$882Etihad Airways
Sat, Feb 28 - Wed, Apr 1
Qatar Airways Logo
8:05 pm - 12:15 pm
IAD
-
BKK
28h 10m1 stop
Qatar Airways Logo
9:15 am - 3:40 pm
BKK
-
IAD
41h 25m1 stop
$883Qatar Airways
Sun, Mar 1 - Wed, Mar 11
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
12:25 pm - 10:05 am
BKK
-
IAD
56h 40m2 stops
$884Etihad Airways
Fri, Jan 16 - Mon, Jan 26
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
2:55 am - 9:05 am
BKK
-
IAD
42h 10m1 stop
$886Etihad Airways
Tue, Jan 20 - Thu, Jan 29
Etihad Airways Logo
2:35 pm - 11:25 pm
IAD
-
BKK
20h 50m1 stop
Etihad Airways Logo
9:25 am - 9:05 am
BKK
-
IAD
35h 40m1 stop
$887Etihad Airways
Thu, Apr 30 - Sat, May 30
Etihad Airways Logo
3:35 pm - 6:30 am
IAD
-
BKK
27h 55m1 stop
Etihad Airways Logo
12:25 pm - 9:45 am
BKK
-
IAD
56h 20m2 stops
$888Etihad Airways
Sun, Jan 18 - Sun, Feb 1
Qatar Airways Logo
10:40 am - 7:25 pm
IAD
-
BKK
20h 45m1 stop
Qatar Airways Logo
8:15 am - 3:55 pm
BKK
-
IAD
43h 40m1 stop
$889Qatar Airways
Booking Insights

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

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

Find cheap flights to Bangkok Suvarnabhumi Airport
Find cheap flights to Bangkok Suvarnabhumi Airport

Planning a trip from Dulles Intl to Bangkok? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

This analysis is based on the cheapest round-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 April.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Bangkok Suvarnabhumi Airport?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi Airport clicked on KAYAK for each day over the last 12 months.

For Washington Dulles Airport to Bangkok Suvarnabhumi Airport, Saturday is the cheapest day to fly on average and Friday is the most expensive. Flying from Bangkok Suvarnabhumi Airport back to Washington Dulles Airport, the best deals are generally found on Sunday, with Saturday being the most expensive.

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 October, where tickets cost $991 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,467 and $1,453 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 4 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$457
Most popular time to fly with an average 26% increase in price.
Flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

When to book flights from Dulles Intl to Bangkok

Are your dates flexible? Find out the best times to travel from Dulles Intl to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $457 for a one-way ticket and $875 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Bangkok Suvarnabhumi Airport?

    Yes, you’ll need a passport to travel to Bangkok Suvarnabhumi Airport from Washington Dulles Airport.

  • 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?

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

  • What is the most popular layover when flying to Bangkok Suvarnabhumi Airport from Washington Dulles Airport?

    Doha is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Bangkok Suvarnabhumi Airport.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Bangkok are Korean Air and ANA. With an average price for the route of $1,184 and an overall rating of 8.4, Korean Air is the most popular choice. ANA is also a great choice for the route, with an average price of $993 and an overall rating of 8.4.

  • 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 travelers 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 round-trip ticket. You could then fly to Bangkok Suvarnabhumi Airport with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BKK can sometimes prove cheaper using this method.

  • 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 5 airlines serving from Dulles Intl to Bangkok

 
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 Bangkok? 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 1186 reviews
8.3Comfort
8.1Food
8.2Entertainment
8.5Boarding
8.7Crew
Airline reviews

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

10.0 ExcellentVivian, Nov 2025
SEA - ICN
Read more Korean Air reviews

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

Not many people, so you can lay down on two seats

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

First trip from Tulsa to Houston by air. It went by quickly. I watched half a movie and continued the rest on the next flight. Staff was considerate and helpful.

The meals were sufficient and tasty considering it was air travel food. Water coffee and juices offered each time a meal came by and water distributed between meals. It was good service in my opinion. Plenty of movies to enjoy. May not be the one you want but plenty of older movies and plenty of current ones as well. I enjoyed the trip.

Flight was good and comfortable, even for long haul economy. No complaints.

Checking in via an alliance partner, even a foreign one should get TSA Precheck printed on your boarding pass. The paper copy issued by ANA didn’t show it. I couldn’t get my digital copy due to some technical issue arising because I checked in with ANA. The kiosks at SFO similarly threw an error. The only way I could have gotten a new copy of my boarding pass was from the UA counter and lines were nearly as long as TSA so I bit the bullet and went through the regular TSA line. If UA wants my business, they need to improve that process.

Suite lounge in Honolulu is very exclusive and boarding from the lounge into the plane is unique. First suites were huge and comfortable. Japanese meal is like a high end omakase meal. All the staff were very kind and provided sophisticated service. Fast Track upon landing was appreciated but not needed this time because immigration was so empty and easy.

I like the service very much. The food just okay but maybe different culture who like, who don't like.

Great first time experience on this airline. Very professional staff and great service.

Warm the bread. Movies: better choices to include Chinese movies options or some of the older winners of flim festival

Almost 6 hours of delay with over 12 gate changes. Flight was supposed to depart around 6 and instead depart after 12am. No accommodations were offered than some snacks closer to midnight when the crew was planning to throw away some snacks.

The crew was very nice and polite. They made sure everybody got their meal and drinks. Even the economy class had a very adequate leg room for someone that is over 6 foot tall.

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I prebooked a comfort plus seat on this flight and therefore the flight was comfy. I got the correct seat in the correct section of the plane that I have booked, that's this. Flight was comfortable. Staff were average on the flight, appearing to be rushed and short in engagement with travellers, perhaps this to maximise there rest time on the flight.

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

Overall the experience was neat with crew being nice and caring especially to parent with kids. The free snacks option was okay. The kiosk at Philly airport didn’t work.

Reason for travelling Tampa to Orlando is to fly Qatar Airline. we end up with American Airline. This was the miserable experience I ever had in my entire travel history. Flight attendants were rude. They hit my knee with the food cart and I was holding ice pack for 2 hours. I still have the pain after a week. WE boarded the flight twice because of the temperature inside the plan.

I missed my flight ,staff unhelpful, they sat and watched me wait ,gangway door closed, English was a problem no announcement I was on time now I missed my month vacation ,lost 1400 bucks no refund I'm sick to my stomach

It’s a business class ticket but they didn’t give a lounge access

I paid 44 $ for seat upgrade (22D) and my seat was stack in high position for all the 6 hours of flight. I don't recommend the upgrade. I am looking to get my upgrade payment back

Crew was amazing as usual. Very comfortable for a 13hour flight. Check in at ATL was terrible. Ticket counter charged me $200 for a small bag. Apparently Kayak sold me a zero luggage ticket. No carry on no checked. So the check in desk charged me a bullshit $200 dollar fee for a small gym bag weighing less than 20lbs. In true 3rd party ticket buying. This will turn into a finger pointing process between Kayak and Etihad. Now I'm going to have to ship my bag back in the mail a day ahead of my return flight.

The flight from Abu Dabhi to Bangalore was terrible. The plane was an order model with no onboard entertainment. The beverage selection were very limited.

My baggage was not boarded and is still missing. I was only carring one piece of luggage and that is misplaced now I am stuck at mumbai without luggage. I had an onward journey from here

We booked a business class ticket via Underpricer. Somehow they screwed up our ticket from Abu Dhabi to Ahmedabad. We will be hesitant to book again with them.

One of your male flight attendant was pushy and a bit of a martinette. Completely unnecessary.

Will never book any flight from Kayak and will never travel ithad airline

Same problem place in the middle so small Im 1,85 m so not good 👍

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

nice and clean plane but the seats and the comfort was not what i expected. i expected more based on all the ads and reviews that i've read. I guess you get what you pay for in economy.

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

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.

As a big guy the seats are way too small for me. Would prefer more comfortable seats on these long haul flights.

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.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

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

Information on your arrival and departure airports