$462 Find Cheap Flights from Washington, D.C. to Bangkok

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Bangkok departing on 1/20. 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

 
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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$851
Overall average: $1,213
Turkish Airlines
Sun 2/22Sun 3/22
IAD - BKK • 1 stop
Cheapest one-way
$462
Typical prices: $618-$981
STARLUX Airlines
Tue 1/20
IAD - BKK • 2 stops
Top airlines
Turkish Airlines
Cheapest • from $851 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 4% compared to booking last minute.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bangkok!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. to Bangkok

Sun, Feb 22 - Sun, Mar 22
Turkish Airlines Logo
1:30 pm - 4:20 amIAD-BKK
26h 50m1 stop
Turkish Airlines Logo
5:50 am - 12:45 pmBKK-IAD
41h 55m1 stop
$851Turkish Airlines
Find Deal
Tue, Jan 13 - Mon, Feb 16
Etihad Airways Logo
2:35 pm - 11:20 pmIAD-BKK
20h 45m1 stop
Etihad Airways Logo
7:35 pm - 9:05 amBKK-IAD
49h 30m2 stops
$852Etihad Airways
Find Deal
Wed, Jan 14 - Wed, Feb 18
Qatar Airways Logo
10:40 am - 7:25 pmIAD-BKK
20h 45m1 stop
Qatar Airways Logo
8:30 pm - 3:55 pmBKK-IAD
31h 25m1 stop
$853Qatar Airways
Find Deal
Sat, Feb 21 - Thu, Feb 26
Qatar Airways Logo
8:05 pm - 6:40 amIAD-BKK
22h 35m1 stop
Qatar Airways Logo
8:30 pm - 3:55 pmBKK-IAD
31h 25m1 stop
$854Qatar Airways
Find Deal
Thu, Nov 27 - Fri, Dec 5
Etihad Airways Logo
9:10 pm - 11:20 pmIAD-BKK
38h 10m1 stop
Etihad Airways Logo
2:55 am - 3:30 pmBKK-IAD
24h 35m1 stop
$855Etihad Airways
Find Deal
Thu, Feb 26 - Fri, Mar 27
Turkish Airlines Logo
1:30 pm - 4:20 amIAD-BKK
26h 50m1 stop
Turkish Airlines Logo
5:50 am - 12:45 pmBKK-IAD
41h 55m1 stop
$864Turkish Airlines
Find Deal
Thu, Nov 13 - Mon, Dec 15
STARLUX Airlines Logo
6:13 pm - 12:35 pmIAD-BKK
30h 22m2 stops
STARLUX Airlines Logo
1:45 pm - 6:06 amBKK-IAD
28h 21m2 stops
$865STARLUX Airlines
Find Deal
Mon, Nov 10 - Mon, Nov 24
IndiGo Logo
1:30 pm - 9:05 pmIAD-BKK
43h 35m2 stops
IndiGo Logo
10:50 am - 7:20 pmBKK-IAD
44h 30m2 stops
$873IndiGo
Find Deal
Wed, Apr 29 - Fri, May 29
STARLUX Airlines Logo
7:01 pm - 12:00 pmIAD-BKK
29h 59m2 stops
STARLUX Airlines Logo
1:10 pm - 7:36 amBKK-IAD
29h 26m2 stops
$879STARLUX Airlines
Find Deal
Sun, Nov 16 - Sat, Nov 22
IndiGo Logo
9:15 pm - 9:05 pmIAD-BKK
35h 50m2 stops
IndiGo Logo
10:50 am - 7:20 pmBKK-IAD
44h 30m2 stops
$902IndiGo
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Bangkok flights

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

What’s the cheapest day of the week to fly from Washington, D.C. to Bangkok?

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

Your flight ticket price will generally be cheaper if you fly to Bangkok on a Saturday and more expensive on a Friday. On your return trip to Washington, D.C., you should consider flying back on a Sunday, and avoid Saturdays for better deals.

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

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, 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 is October, where tickets cost $996 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,520 and $1,504 respectively.

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

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, 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, you should book around 2 weeks before departure, which saves you about 4% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Cheapest flight$462
Flight from Washington Dulles Airport to Bangkok

When to book flights from Washington, D.C. to Bangkok

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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, D.C. to Bangkok flights

  • What airport should I use to fly out of Washington D.C.?

    The nice thing about this route is that there are great choices from all three area airports. From Washington Dulles International Airport, there is a one-stop flight aboard Turkish Airways, and from both Ronald Reagan Washington National Airport and Baltimore Washington International Airport (BWI), you can find two-stop flights aboard Air Canada.

  • What is one of the most sustainable airlines when flying from Washington, D.C. to Bangkok?

    JetBlue invests in modern and fuel-efficient aircraft to reduce its carbon emissions. The airline invests in sustainable aviation fuel (SAF) to reduce the carbon intensity of its flights. JetBlue has also implemented programs to reduce ground emissions and promote energy efficiency in its facilities. The airline has implemented recycling programs on board its aircraft and they aim to minimize single-use plastics.

  • Will I need a visa to fly from Washington D.C. to Bangkok?

    For short-term visits, most US citizens can obtain a tourist visa upon arrival at Bangkok's main international airport, Suvarnabhumi Airport. This visa is known as the Visa on Arrival (VOA) and allows for a stay of up to 30 days. Alternatively, you can also apply for a tourist visa in advance at the Royal Thai Embassy or Consulate in the United States. The tourist visa allows for a longer stay in Thailand, typically up to 60 days.

  • What is the benefit of flying in higher ticket tiers on Korean Air?

    Flying in higher ticket tiers on Korean Air, such as Prestige Class and First Class, offers cabins with more spacious seating. Many of the seats are often designed to recline into fully flat beds. Passengers have access to dedicated check-in counters, allowing for faster and more convenient check-in processes.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Bangkok was $462 for a one-way ticket and $851 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Bangkok?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Bangkok.

  • Which airports will I be using when flying from Washington, D.C. to Bangkok?

    Washington, D.C. is served by only 1 airport and there are 2 airports in Bangkok. You will leave Washington, D.C. from Washington, D.C. Dulles Intl and you will be arriving in Bangkok at one of these airports: Bangkok Suvarnabhumi or Bangkok Don Mueang Intl.

  • Which aircraft models fly most regularly from Washington, D.C. to Bangkok?

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

  • Which airline alliances offer flights from Washington, D.C. to Bangkok?

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

  • What is the most popular layover when flying to Bangkok from Washington, D.C.?

    Doha is the most popular layover city among KAYAK users traveling from Washington, D.C. to Bangkok.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Bangkok?

    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, D.C. to Bangkok.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Bangkok?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Washington, D.C. 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, D.C. to Bangkok?

    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 with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Bangkok?

    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 from Washington, D.C. 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

  • A great feature of Ronald Reagan Washington National Airport (DCA) is the convenience it offers travelers. An easy way to get to this airport from the center of the city is to take the Washington Metropolitan Area Transit Authority Blue Line subway, which can have you at the airport in about 10 minutes.
  • When traveling on one of the convenient flights offered by Turkish Airways between Washington Dulles International Airport (IAD) and Suvarnabhumi Airport (BKK), it is good to know that all passengers can take one carry-on bag with them and one personal item aboard the plane. Those in business class can take an additional carry-on bag on the plane.
  • Some great reasons to travel in the higher ticket tiers aboard Turkish Airways is that it often gives you access to their lounge in Concourse B on Washington Dulles International Airport (IAD) plus when you book a Business Class ticket on this airline, you get amazing amenities like the most comfortable seats, chef-created dining, and preferred check-in.
  • Kids from 5 to 11 traveling alone on Qatar Airways will use the airline's Unaccompanied Minor service. Qatar Airways charges a handling fee for the service. Qatar Airways staff will assist the child throughout the journey, from check-in to arrival.
  • When making this trip on JetBlue, those in the Blue Basic and Blue ticket tiers can check up to two bags both for a fee. Once you move up into the Mint ticket tier, you can take these same two checked bags for free as part of your ticket purchase.

Reviews of the top 5 airlines serving from Washington, D.C. 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 Washington, D.C. 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 1155 reviews
8.7Crew
8.1Food
8.5Boarding
8.3Comfort
8.2Entertainment
Airline reviews

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

10.0 ExcellentAnonymous, Oct 2025IAD - ICN
Read more Korean Air reviews

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.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

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.

Everything was excellent. Only the fish entree in the Japanese meal was overcooked and quite dry but everything else was great

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

I was able to change my flight last minute. It was more expensive, but that was my fault. Thank you for allowing me to fly!

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.

Purchased WiFi was slow to non functional. Staff was not personable or friendly. Seats were cramped. Boarding took long but I expected that.

The crew was excellent. The flight was delayed for 20 to 25 minutes. We did arrive a bit later than expected. The AC could have been better.

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.

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

In Colombo when I-drop my baggage Sri Lanka air line crew not polite way talk very rude

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

I am a larger than average person and in my opinion i don't think it's fair to allocate a window seat to anyone who is my size or larger, i was seated between 2 large passengers on a full aircraft. The guy in the window seat also occupied a portion of the middle seat (my seat) which made my experience of flying with etihad very cramped and uncomfortable, i was flying from Abu Dhabi to Bangkok. Had this been a airbus 380 it would have been better as the seats are larger but unfortunately it wasn't so i had to endure the 6+hrs unable to get any rest

It was worst flight ever of 26h. Poor service and seating. Flight from Abu Dhabi to Islamabad service and seating was worst ever. No tv extra.

Surprised at the lower quality of seats on the Boeing 777 in Business Class. Seats are tight and the whole Business class section is jam packed with seats. It doesn’t feel like Business Class at all. Also the way the tray tables are placed with a huge bulky solid metal hinge at knee level makes it so uncomfortable and always anxious that one will accidentally bang their knee on it. Quality of amenities has also declined. Over priced tickets with diminished quality of the entire experience.

It was OK as the seat which we paid for doesn’t have any window. We paid $120 for 3 seats but it’s for nothing. Crew could not help. None of the ports worked so all our phones went dry

I had a terrible experience checking in at the airport for my flight. I booked my ticket initially through Kayak while it was promoted as a ticket that offers a carry on and 2 suit cases. (I have a screen shot as a proof of it) I selected it to buy three tickets and paid online. Couple of minutes later airfare assist which is the OTA offering the ticket called me saying My card declined. So I used a different card that went through. I was surprised that they increased the price ticket by a $167. They said the ticket no longer exists and because my card declined I had to buy a new one. So I did. The day my family and I were traveling I could not check in and when I went to the airport I was shocked to be told my ticket had no bags allowed and must pay $200 per bag for three people 6 bags mean I have to pay $1200. I called the travel agency as I feel I was scammed the confirmation didn’t say anything about the bags and they never told me the new ticket doesn’t not include any bag so they changed it after I selected it on your app without informing me. Very sneaky. The travel agency said they will reimburse me only for one bag person. Which means I still paid $600 I still feel very disappointed to pay such an expense. I have always used Kayak to buy my flight tickets and telling everyone how good your rates and app are however after this I feel I was mislead and paid more for something I should not have to. You allowing such an agency on your platform will surely hurt your reputation and level of integrity. I have all the proofs from the screen shot to the confirmation email from them, the or email offering to reimburse o e bag per person and the $1200 bag fees receipts that I paid on the desk. I must be refund the full amount and I look forward to your response.

The food could be better. Toilets were smelly all along

Horrible. After paying for seats, I was cramped, my daughters legs kept hitting the seat in front, I had no overhead bin space and no help from stewards on board, the food was served cold, when asked for snacks was told to wait and never received any, the flight was cold with no temperature controls. Entertainment was outdated. I booked this through partnership with American Airlines but will avoid in the future.

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!

This is my 2nd time with the Turkish airline. Would definitely recommend. In stability we connected to Indiago would not recommend, very cramped seating. No inflight entertainment..service was inferior.

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!!

Paying extra for premium seats was wasted. Turkish Airlines takes 2 seats for bassinet. The lady next to me had a baby with bassinet Bassinet was in front of my seat

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

Not up to Business Class standards. Two of the three toilets were out of order. The hostesses were aware and didn’t show any responsible act to do something. Food quality was not what we expect from Turkish hospitality. Overall we were not impressed and disappointed.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

Everything you need to know for your flight from Washington, D.C. to Bangkok

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.