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Cheap Flights from Thailand to Washington, D.C.

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Thailand to Washington, D.C.

Fri, Oct 30 - Fri, Nov 6
Multiple Airlines Logo
2:30 pm - 10:05 amBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
30h 35m2 stops Krabi Abu Dhabi Zayed Intl
Multiple Airlines Logo
11:35 pm - 9:25 pmIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
33h 50m1 stop Incheon Intl
$803Multiple Airlines
Fri, Oct 30 - Fri, Nov 6
SAUDIA Logo
3:20 pm - 2:50 pmBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
34h 30m1 stop Jeddah King Abdulaziz Intl
SAUDIA Logo
5:50 pm - 1:40 pmIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
31h 50m1 stop Riyadh King Khaled Intl
$819SAUDIA
Mon, Nov 9 - Sun, Nov 22
United Airlines Logo
9:10 am - 9:10 amBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
36h 00m1 stop Tokyo Haneda
United Airlines Logo
1:15 pm - 11:30 amIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
34h 15m3 stops Chicago O'Hare Intl Los Angeles Hong Kong Intl
$1,027United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
9:10 am - 9:10 amBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
36h 00m1 stop Tokyo Haneda
United Airlines Logo
6:11 am - 5:10 amIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
34h 59m2 stops Chicago O'Hare Intl Tokyo Haneda
$1,028United Airlines
Mon, Dec 21 - Sat, Jan 9
ANA Logo
2:20 pm - 11:54 amBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
33h 34m2 stops Tokyo Haneda Chicago O'Hare Intl
ANA Logo
11:10 am - 5:10 amIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
30h 00m1 stop Tokyo Haneda
$1,062ANA
Sun, Nov 1 - Wed, Dec 2
ANA Logo
10:25 pm - 9:13 pmBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
34h 48m2 stops Tokyo Haneda Chicago O'Hare Intl
ANA Logo
11:10 am - 4:20 pmIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
41h 10m1 stop Tokyo Haneda
$1,062ANA
Tue, Nov 3 - Thu, Apr 1
Qatar Airways Logo
3:00 am - 3:55 pmBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
24h 55m1 stop Doha Hamad Intl
Qatar Airways Logo
9:00 pm - 6:20 amIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
22h 20m1 stop Doha Hamad Intl
$1,111Qatar Airways
Tue, Nov 3 - Thu, Apr 1
Qatar Airways Logo
6:55 pm - 8:10 amBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
25h 15m1 stop Doha Hamad Intl
Qatar Airways Logo
9:00 pm - 6:20 amIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
22h 20m1 stop Doha Hamad Intl
$1,111Qatar Airways
Thu, Oct 29 - Mon, Nov 2
Delta Logo
1:05 am - 4:51 pmBKK  Bangkok Suvarnabhumi-BWI Baltimore/Washington
26h 46m2 stops Incheon Intl Detroit Metropolitan Wayne County
Delta Logo
6:10 am - 11:05 pmBWI  Baltimore/Washington-BKK Bangkok Suvarnabhumi
28h 55m2 stops Detroit Metropolitan Wayne County Incheon Intl
$1,133Delta
Thu, Oct 29 - Mon, Nov 2
Delta Logo
1:05 am - 4:42 pmBKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
26h 37m2 stops Incheon Intl Detroit Metropolitan Wayne County
Delta Logo
6:05 am - 11:05 pmIAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
29h 00m2 stops Detroit Metropolitan Wayne County Incheon Intl
$1,152Delta
Booking Insights

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

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

What is the cheapest flight to Washington, D.C.?

In the last 5 days, the cheapest flight deal to Washington, D.C. was found on the route from Chiang Mai, at $803 return. The most popular connection is from Bangkok to Washington, D.C. and KAYAK users have found round-trip deals for as low as $803 in the last 5 days.

What is the cheapest month to fly to Washington, D.C.?

The cheapest month for flights to Washington, D.C. is July, where tickets cost $1,054 on average for return flights. On the other hand, the most expensive months are December and August, where the average cost of tickets from Thailand is $1,246 and $1,220 respectively. For one-way flights, the best month to travel is September with an average price of $620.

How far in advance should I book a flight to Washington, D.C.?

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Which is the cheapest airport to fly into in Washington, D.C.?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington, D.C. is Baltimore/Washington Airport (BWI), with an average flight price of $250.

Good to know

Low season

October

Cheapest flight

$368
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 52% increase in price.
Flight from Chiang Mai to Washington Dulles Airport

FAQs - booking Washington, D.C. flights

  • What is the cheapest flight to Washington, D.C.?

    In the last 5 days, the cheapest flight deal to Washington, D.C. was found on the route from Chiang Mai, at $803 return. The most popular connection is from Bangkok to Washington, D.C. and KAYAK users have found round-trip deals for as low as $803 in the last 5 days.

  • Which Washington, D.C. airport is closest to central Washington, D.C.?

    Out of the 2 airports in Washington, D.C., Reagan Washington National Airport is the nearest to the city center (4 miles). You'll travel 22 miles to reach the center of Washington, D.C. if you land in Washington Dulles Airport

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

    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 to Washington, D.C..

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

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

    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 Washington, D.C. 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 to Washington, D.C.?

    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 Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Washington, D.C. are there each week?

    Each week there are around 13,233 direct flights from within Thailand to Washington, D.C.. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Washington, D.C.

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington, D.C. flight deals.

Reviews of the top 3 airlines serving from Thailand to Washington, D.C.

 
Need help choosing which airline to fly with to Washington, D.C.? 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.
8.3
ANAOverall score based on 1315 reviews
8.5Boarding
8.2Comfort
8.7Crew
8.0Entertainment
7.8Food
Airline reviews

I am a United 1K flyer but certainly I would fly ANA again. Great inflight service!

8.0 ExcellentWei Hong, Sep 2026
Read more ANA reviews

I am a United 1K flyer but certainly I would fly ANA again. Great inflight service!

"The Room" is the only way to fly. The service was excellent and the stewardesses we all gorgeous and friendly. The boarding process was delayed and the attendants at the airport were not the best.

Great. Very helpful staff and accommodating. The flight was also smooth

My son flew and had a great experience.. thank you for taking care of my baby

The flights with ANA were great. The flights with United, not so much.

I enjoyed the flight, but a little too much turbulence on the flight. Thank you for the meal and entertainment. This kept my kids entertain during the flight. I have to admit comparing the crew from ANA vs United, there was a sense of more accomodation, friendliness and service compared to United crew. I felt for the United crew, it was just a job and it can be seen in there demeanor and delivery.

Choice of movies dated as with the screens. Major room for improvement on the software to sort and select choices.

I loved everything about my experience!!! The staff were absolutely incredible. I can not wait to fly again with them.

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

we were in premium economy, but we both got middle seats and had to sit separately. i could have avoided this by trying to obtain seats sooner, but i tried 3 times and gave up. ANA's technology is not friendly for newcomers. no, check that---I think it is nigh impossible. not sure we are coming back. ana can do better to provide a front end that's friendly to users in both US and Japan.

One hour before landing was the most scary part of my life. The plane just dropped from the air . No explanation or apologies from the captain. Women and children screaming everywhere. Would like to know what happened

My flight going to doha had economy seats that had a little more leg room. Coming back the leg room was not there. I'm 6'3" and my knees were against the chair in front of me. I couldn't slide my feet under the chair. The 15 hour flight felt like torture from the lack of sleep I was getting being so uncomfortable. Food and crew were great though.

It was excellent except for at the very end. I woke up about 1.5 hrs before touchdown and wanted to order food in the Business class. I was told they had shut down food service. It would have been good to get a heads up before they closed the service. Anna the air hostess was wonderful. She did get me 2 bowls of fruit and I was very appreciative of her. Wonderful human and a hostess.

Amazing airline accommodations. The cabins were so great. The food was very good and the flight attendants were so nice. Made a 15 hour flight seem easy.

I paid extra for seating when first booking flight to be in a comfortable economy seat They still changed it to a middle seat regardless. When I asked for it to be changed back to aisle, they could only give me one at the back of the plane in the least comfortable seats.

Same as already mentioned. This was more comforting as I got my aisle seat for my knee.

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.

I recently travelled with Qatar Airways from Doha to Dulles in the QSuite, and the experience was nothing short of exceptional. The QSuite truly feels like a First-Class experience, with its luxurious design, privacy, and comfort. The cabin crew, especially the lady in charge of the cabin, was remarkable—professional, attentive, and genuinely kind. The food was excellent, and the comfort of the seat was absolutely first-class, making the journey smooth and enjoyable. While the in-flight experience was outstanding, I have a few points of feedback. Firstly, the content available in the in-flight entertainment system could be expanded and upgraded to include a more diverse and updated collection. This would elevate the entertainment experience to match the premium standards of the QSuite. Secondly, regarding the Wi-Fi service: while QSuite passengers receive one hour of complimentary Wi-Fi, any additional usage requires a fee of USD 10. Considering the premium pricing of QSuite, it would be more fitting to include unlimited Wi-Fi as part of the experience, further enhancing the luxury offered to passengers. Lastly, I must highlight an issue with luggage handling. Unfortunately, my luggage did not make it through the transit, which was disappointing. While the ground crew assured me that it would be delivered to my home on the same day as it was arriving on the next flight, this promise was not fulfilled, and the delay added unnecessary inconvenience to an otherwise excellent experience. Overall, the QSuite experience was exceptional, but addressing these areas would further solidify Qatar Airways’ position as a leader in luxury air travel.

Do not overbook flights and kick out confirmed ticketed passengers :-(

Vistara i bought a biz class fare but a few days before vistara always changes my biz class flight to economy .. happened to me 4 times .. seated could be wider .. boarding could be more organized .. crew did their best but not enough resources all in all very poor experience Qatar Delhi .. only complain .. no clear signage to lounge for transferring pax .. its a Delhi shot coming.. no feeling of exclusivity for biz/ 1st class pax.. but everything else was much better .. once i boarded Qatar .. i loved it Qatar to Washington .. only complain i boarding .. too crowded .. no separate area for biz/1st class should hav completely separate area for upper class.. security is stifling pax comfort by the gate ..but everything else was great

Awful!!!. I do not recommend United. The flight staff are unhappy and don't attempt to make the passengers feel comfortable or welcome. The food is not edible, and the seats are miserable. My expensive luggage was destroyed, and the ticket prices are too much for the experience.

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

Did not like the check in guy quibbling over a couple pounds at the luggage weigh in

Just having a little bit more legroom would've been nice.

This is related to my second leg of the flight, from Washington DC to SFO. I understand things happen, but I got home at 3 am for a 12:59 am landing. I live 10 min from the airport. Bridge breaks when a few rows of the plane are off? Maintenance didn’t catch that?

Great Brasilia aircraft - not a Boeing 757 like the next part of the flight. Flight from MCI to IAD was great, on-time, comfortable, did I mention that? The flight from IAD to EDI was painful. One of the reasons I won't fly United again? Boeing 757, with a seat pitch and material that was horrendous. Worst aircraft ever, made worse by United sardine-can tight seating. Oh, and the connection window, 45 minutes, really? At IAD, in different concourses? What idiot came up with that flight scenario? Happily, (for me and my travel insurance people) the flight was late (reminiscent of American Airlines). The crew was professional and courteous.

great starting with the business Class that's was Amazing . thank you United Airlines and brussels Airlines

Best flight in years. Pre-boarding because of my mobility issues. Good food and beverage from beginning to end. Excellent choice of films. Good service by stewardesses. Comfortable seats. I could lie down!

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

Bad check in experience. Dirty ancient aircraft. Truly awful food and this in Business/ First class.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Oxon Hill
Owings Mills
Greenbelt
Glen Burnie
Edgewood
Chesapeake Beach
Camp Springs
Ellicott City
Pikesville
Hunt Valley
Colonial Beach
Capitol Heights
Lutherville Timonium
Westminster
Clinton

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