$425 Find Cheap Flights from Washington Dulles Airport to Thailand

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 Thailand departing on 4/5. 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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Cheap Flights from Dulles Intl to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop$848
Phuket City
Phuket City1 stop$940
Chiang Mai
Chiang Mai2 stops$952
Ko Samui
Ko Samui2 stops$1,062
Krabi
Krabi2 stops$1,137
Bangkok
Bangkok1 stop$848
Phuket City
Phuket City1 stop$940
Chiang Mai
Chiang Mai2 stops$952
Ko Samui
Ko Samui2 stops$1,062
Krabi
Krabi2 stops$1,137

Book Cheap Dulles Intl to Thailand Plane Tickets

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

Wed, Apr 22 - Mon, May 25
Etihad Airways Logo
3:10 pm - 12:20 pm
IAD
-
BKK
34h 10m
1 stop
Etihad Airways Logo
5:50 pm - 9:45 am
BKK
-
IAD
50h 55m
2 stops
$848Etihad Airways
Fri, Apr 24 - Mon, May 4
Etihad Airways Logo
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
BKK
-
IAD
23h 45m
1 stop
$849Etihad Airways
Sun, May 3 - Thu, Aug 27
AIR PREMIA Logo
1:20 pm - 9:10 pm
IAD
-
BKK
44h 50m
1 stop
AIR PREMIA Logo
10:45 pm - 10:50 am
BKK
-
IAD
23h 05m
1 stop
$853AIR PREMIA
Wed, May 6 - Sun, May 17
AIR PREMIA Logo
1:20 pm - 9:10 pm
IAD
-
BKK
44h 50m
1 stop
AIR PREMIA Logo
10:45 pm - 10:50 am
BKK
-
IAD
23h 05m
1 stop
$855AIR PREMIA
Wed, Sep 9 - Mon, Sep 21
EVA Air Logo
1:15 am - 10:25 am
IAD
-
CNX
22h 10m
1 stop
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$980EVA Air
Wed, Sep 9 - Fri, Sep 25
EVA Air Logo
1:15 am - 10:25 am
IAD
-
CNX
22h 10m
1 stop
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$1,020EVA Air
Sat, May 9 - Sun, May 17
Turkish Airlines Logo
1:20 pm - 8:15 am
IAD
-
USM
31h 55m
2 stops
Turkish Airlines Logo
7:50 am - 11:35 am
USM
-
IAD
38h 45m
2 stops
$1,120Turkish Airlines
Tue, Apr 28 - Tue, May 5
Turkish Airlines Logo
1:20 pm - 8:45 am
IAD
-
KBV
32h 25m
2 stops
Turkish Airlines Logo
9:25 am - 11:35 am
KBV
-
IAD
37h 10m
2 stops
$1,137Turkish Airlines
Tue, Apr 28 - Tue, May 5
Emirates Logo
10:55 am - 8:45 am
IAD
-
KBV
34h 50m
2 stops
Emirates Logo
10:45 pm - 8:40 am
KBV
-
IAD
44h 55m
1 stop
$1,202Emirates
Wed, Apr 29 - Wed, May 6
Emirates Logo
10:55 am - 10:55 am
IAD
-
KBV
37h 00m
1 stop
Emirates Logo
9:25 am - 8:40 am
KBV
-
IAD
58h 15m
2 stops
$1,210Emirates
Booking Insights

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

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

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

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 Thailand, 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 Thailand is October, when tickets cost $981 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,467 and $1,308 respectively.

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

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 Thailand, 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 Thailand, you should book around 2 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$425
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 50% increase in price.
Flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

FAQs - booking Thailand flights

  • How early should I arrive at IAD?

    Passengers flying from Washington Dulles Airport to Thailand should arrive at the airport at least 3h prior to the flight's scheduled departure. You won't run the risk of missing your flight this way, and you'll arrive at your boarding gate on time.

  • Where can I get assistance at any of the airports in Thailand?

    At HKT, you can get help from the information desks throughout the airport if you're looking for specific knowledge. On the other hand, at FRA, you can either utilize one of the various telephone services at the airport or go to the information desks in the Departures and Arrivals areas.

  • Can I spend the night at Washington Dulles International Airport (IAD)?

    Generally, Airside at Dulles offers the best sleeping alternatives, especially in Concourses C and D, where there are numerous armrest-free seats for stretching out. The landside is quite cold and noisy, and all couches have armrests; therefore, it is worthwhile to go through security before taking a nap. A blanket, warm clothes, and noise-canceling headphones or earplugs will help you sleep better even when it's not always warm and silent in the air.

  • Which is the most suitable ground transportation option in Thailand?

    Consider hiring a car if you want to thoroughly explore Thailand and its environs once you arrive at BKK or HKT. Budget, Hertz, Asap, Europcar, National, Avis, Bizcar, and Sixt are just a few of the many car rental companies. When you check in at either of the airports, there are a number of travel agencies that can help you get acquainted with the cities. The travel agencies are found in the arrivals area.

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

    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 Thailand.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Thailand 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 Thailand?

    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 from Washington Dulles Airport to Thailand with an airline and back 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 Thailand?

    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 from Washington Dulles Airport to Thailand up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Thailand

  • Hong Kong Phuket International Airport (HKT) and Bangkok Suvarnabhumi International Airport (BKK) are the major airports in Thailand, serving most international flights. BKK serves as the hub of Emirates Airlines, Bangkok Airways, Sri Lankan Airlines, Indian Airlines and Thai Airways. On the other hand, HKT is the hub of Thai Airways, Thai AirAsia and Bangkok Airways.
  • If you are flying through Washington Dulles International Airport (IAD), you will find a military lounge located at the airport’s Main terminal across from the Baggage Claim Area 11 and 12 in the Arrivals level. The lounge offers complimentary services to active US military personnel and their families.
  • The airport offers exceptional shower facilities if you want to freshen up upon your arrival at BKK. The shower facilities are found in Concourse G in the International terminal’s Airside in the Miracle CIP First Class Lounges and Miracle Transit Hotel. On the hand, if you fly through HKT, you will find the shower facilities on the Arrivals level 5 in terminal 1.
  • IAD has a designated interactive children's playground situated on the airport’s Airside near Gate B70, where you can have your kids get rid of some steam before boarding their flights. Additionally, nursing mothers will find lactation suites at the Main Terminal and Gates B70, A20 and C11.
  • IAD offers services and facilities to travelers with limited mobility. The airport is outfitted with wheelchair-accessible parking spaces, restrooms and shuttles to simplify their movement throughout the airport. On the other hand, you can request additional assistance and wheelchair services at the Thailand airports where you are flying into.

Reviews of the top 5 airlines serving from Dulles Intl to Thailand

 
Need help choosing which airline to fly with from Dulles Intl to Thailand? 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
ANAOverall score based on 1128 reviews
8.0Entertainment
7.8Food
8.7Crew
8.5Boarding
8.2Comfort
Airline reviews

Their was $200 charge for 2nd luggage, airplane very new and flight smooth. Flight time seem faster then Asian stoping Korea then china.

10.0 ExcellentZhao, Mar 2026
HNL - NRT
Read more ANA reviews

Their was $200 charge for 2nd luggage, airplane very new and flight smooth. Flight time seem faster then Asian stoping Korea then china.

Flight was late boarding. United crew were not friendly and cordial unlike the ANA crew.

Seat was broken. Check in was not possible until we reached the gate, by then we were separated.

The food was not great; but I don’t expect much from airline food. However, the staff was incredible! I had gotten to the gate when I realized I had left my computer at the security checkpoint! I told a staff member and she said, “well, you will miss this flight if you go back to get it” It was a long way from the gate. I asked if I might get on the next flight. She sent for another staff member, and he took me to the gate desk. He found an open seat, and said,”okay, go run to get your computer, I will get you a new boarding pass.” I rran back, retrieved my computer, and returned to the gate. It was closed, but I found the gate nearby where the next ANA flight was leaving. Another staff member was ready for me, and printed me a new pass, and even made sure I still had an aisle seat that I requested! I got in line and continued my trip. These people are amazing, helpful, and friendly. My trip could have been ruined, or postponed at a great expense, but they saved the day! 5 stars!!!!

I originally thought I was booking with ANA airlines and didn't see "operated by United" until the day of. I even thought the United check-in update was a scam so ended up checking in 3 hours before the flight, causing separate seating and uncomfortable middle seats.

Very disappointing. Our flight was delayed for almost 6 hours with the lost time disrupting our travel plans. United should have known that any delay (approximately and hour) triggered a no-fly/work because according to the FAA they had to many flight hours. After the mechanical delay (approximately an hour) we had to wait for a fresh crew change. Seems to me that United could have anticipated this incident. Again, a very disappointing travel experience.

Excellent crew, food and comfort from LA to Narita. Flight from Narita to Manila was just okay, Food and comfort needs to improve. The business class was not comfortable.

Lots of leg room in premium. Departed exactly on time. Friendly crew.

Cabin Crew was excellent. They took care of everything requested. Flight was good

I was charged $200 for a 2nd checked bag, which is unreasonably high and feels like price gouging. Other than that the experience was excellent.

Extremely uncomfortable seats with very little cushioning, unable to recline enough to sleep comfortably on this 13 hour overnight flight. My body was in pain by the end.

When we checked in at the Siem Reap Airport in Cambodia, we were only given three boarding passes and told that we would have to check in with American when we arrived in Boston. This was a source of stress for us. After we landed in Boston, we had a long passage from Terminal E to Terminal B (American Airline ticketing counter). Because the electronic ticketing kiosks for check-in would not recognize our Confirmation Code, we had to wait for an hour in a long line where only two AA reps were taking care of Special Services passengers. In many years of both business and recreational travel, I have never had this experience. I would expect more from AA being in partnership with other airlines to do a better job with this.

This flight was a very good trip for us. The crew were very friendly and helpful. They made arrangements for my husband to have assistance in boarding. We were not expecting a meal, so it was a pleasant surprise on this short flight to have a meal and beverage from a very courteous crew.

Our experience on the Doha to Hyderabad segment was extremely stressful due to prolonged delays and a lack of clear communication from the airline. We were traveling as a family, including children, and the uncertainty around timing and next steps caused significant distress. There was very little proactive information provided during the delay, and we were not given clear written explanations about what was happening or how long it might take. This made it difficult to manage the situation, especially while caring for children in a transit environment. In addition, one member of our party was ultimately unable to continue travel, which added to the emotional strain and disruption of the trip. Overall, the experience highlighted gaps in communication, customer care, and handling of unexpected situations. We are sharing this feedback so that future passengers, especially families, are supported with clearer communication and better assistance during irregular operations.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

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.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Dear Team, I purchased a full travel package that included 2 checked bags through you and JustFly. However, when I arrived at the airport, my ticket showed 0 checked bags. Since I was traveling internationally to India with 2 bags, It was a $200 per bag at the counter, which was extremely disappointing. For an international trip, why would I ever choose a no‑bag option for only $20–$30 less? This seems like an error in the booking process, and I am requesting clarification and a resolution. I have called JustFly and on phone for 1 hr :53 min and they couldn't help till I show some kind of proof etc which isn't possible but besides that love your service and using it for years !

Good one but just notice that you have to ask several time to get water or coffee .

We have paid premium price for a business class Cabinet and we have received the old 777 with the following apart business class that is not to standard. It was very disappointing and it’s a very bad reputation for a premium airline company. This aeroplane should be the commission from being as a business class. We will pass this knowledge to our colleagues because the quality of business class in Etihad is not consistent and it is a lucky dip that sometimes you’re getting a good aeroplane and sometimes you’re getting their 30 years old aeroplane. The crew of the aeroplane have apologise and said that they hate this aeroplane and they have complained about it multiple times as well. Obviously Etihad is putting the economy in front of the Customer Experience. For the future we will not take this risk anymore and will fly with established company like emirates.

It was fantastic. The flight from Chicago to Abu Dahbi was fantastic. The crew, food and service were amazing. Everything was handled by the crew member assigned to us , Nicholas, was usually done before we asked for it. Highly recommend Etihad!

Very disappointing #1 - You have to pay extra to use the business lounge, or else you sit in the cold airport for 7 hours and fall sick #2 - Did an awful job with boarding, they turned on the "last call" notice on the monitor made the passengers come running to the gate, once the passengers came close the crew would tell them - hey we are not boarding yet, this included passengers with children also, this was happening all the time, it was pitiful to see #3 - Did not have the courtesy for the passengers in the business class, there is a reasons why people choose business class, because they need to get to work, that means sleep is very important for them, in the business class, the crew members would themselves cause so much noise by closing the door in a loud way, once the crew member does it then the other passengers are also doing it, #4 - the food did not smell good, #5 - The Abu Dhabi airport is small, so not a whole lot to do, especially when the layover is 7+ hours. #6 - Did not provide the slippers with pajamas, #7 - also the pajamas also I had to ask, only after asking it was provided. #8- Asked for an extra pillow because the pillow they provided was not tall enough, the crew member said there was no additional pillow and gave me something like a blanket, I tried my best to use that as a pillow, but my head kept on sliding and that messed up my sleep and did not get deep thorough sleep Overall the airlines did not have an understanding of how to care for the passengers, especially the business class ones. Overall it was a bad experience, I would much rather spend the money with Qatar airways, the experience with Qatar is so much better.

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.

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

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

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

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

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

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

Information on your arrival and departure airports