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฿14,930 Find Cheap Flights to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest return flight
฿25,975
Typical prices: ฿35,336-฿42,273
Air China, AIR PREMIA
Mon 19/11Tue 27/11
BKK - IAD • 1 stop
Cheapest one-way flight
฿14,930
Typical prices: ฿21,567-฿35,119
AIR PREMIA
Sun 18/2
BKK - IAD • 1 stop
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Best reviews • 8.4 score
Airline reviews
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Top routes
Cheapest
Most popular
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When to book
in advance
Our data shows that travellers who book at least 15 weeks in advance save around 23% compared to booking last minute.
Insights
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When to travel
Cheapest • 9% price drop
Most popular
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We hope you enjoy your trip to Washington, D.C. Dulles Intl Airport!
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Booking Insights
Flight Deals

Cheap Flights to Dulles Intl

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

Recent return flight deals to Dulles Intl

Thu 19 Nov - Fri 27 Nov
Multiple Airlines Logo
01:30 - 18:30BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
29h 00m1 stop Beijing Capital
Multiple Airlines Logo
23:35 - 21:25IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
33h 50m1 stop Incheon Intl
฿25,975Multiple Airlines
Thu 4 Mar - Wed 24 Mar
AIR PREMIA Logo
22:55 - 20:35BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
33h 40m1 stop Incheon Intl
AIR PREMIA Logo
00:35 - 21:25IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
33h 50m1 stop Incheon Intl
฿26,414AIR PREMIA
Sun 7 Mar - Mon 23 Aug
เอทิฮัดแอร์เวย์ Logo
02:55 - 09:00BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
42h 05m1 stop Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
15:10 - 07:15IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
29h 05m1 stop Abu Dhabi Zayed Intl
฿34,791เอทิฮัดแอร์เวย์
Sun 7 Mar - Mon 23 Aug
เอทิฮัดแอร์เวย์ Logo
02:55 - 09:00BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
42h 05m1 stop Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
15:10 - 07:15IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
29h 05m1 stop Abu Dhabi Zayed Intl
฿34,824เอทิฮัดแอร์เวย์
Tue 10 Nov - Wed 25 Nov
United Airlines Logo
09:10 - 11:52BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
38h 42m2 stops Tokyo Haneda Chicago O'Hare Intl
United Airlines Logo
22:10 - 11:30IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
49h 20m2 stops Los Angeles Hong Kong Intl
฿35,162United Airlines
Sat 23 Jan - Fri 29 Jan
United Airlines Logo
09:10 - 21:18BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
48h 08m2 stops Tokyo Haneda Chicago O'Hare Intl
United Airlines Logo
22:37 - 11:30IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
48h 53m2 stops Los Angeles Hong Kong Intl
฿35,196United Airlines
Tue 6 Apr - Tue 11 May
ANA Logo
13:55 - 10:05BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
31h 10m1 stop Tokyo Haneda
ANA Logo
15:35 - 04:35IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
26h 00m2 stops Chicago O'Hare Intl Tokyo Haneda
฿36,176ANA
Tue 19 Jan - Fri 22 Jan
ANA Logo
14:20 - 13:33BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
59h 13m2 stops Tokyo Haneda Chicago O'Hare Intl
ANA Logo
11:10 - 16:20IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
41h 10m1 stop Tokyo Haneda
฿36,311ANA
Sun 7 Mar - Mon 9 Aug
Qatar Airways Logo
03:00 - 15:55BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
24h 55m1 stop Doha Hamad Intl
Qatar Airways Logo
21:00 - 06:20IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
22h 20m1 stop Doha Hamad Intl
฿41,344Qatar Airways
Mon 8 Mar - Mon 9 Aug
Qatar Airways Logo
20:35 - 15:55BKK  Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl
31h 20m1 stop Doha Hamad Intl
Qatar Airways Logo
21:00 - 19:05IAD  Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi
35h 05m1 stop Doha Hamad Intl
฿42,154Qatar Airways
Booking Insights

Price, demand, and travel trends for flights to Washington, D.C. Dulles Intl Airport

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

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

Bangkok Suvarnabhumi Airport to Washington, D.C. Dulles Intl Airport is the cheapest route at ฿25,975 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Washington, D.C. Dulles Intl Airport?

On average, a return flight from Thailand to Washington, D.C. Dulles Intl Airport costs ฿38,864, based on KAYAK data over the past 12 months. Return fares from Chiang Mai average ฿38,621, while Bangkok Suvarnabhumi Airport runs a bit higher at ฿38,974.

What is the cheapest day to fly to Washington, D.C. Dulles Intl Airport?

Friday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport at ฿35,365 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿41,614.

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

•March is the cheapest month to fly to Washington, D.C. Dulles Intl Airport with an average price of ฿35,331 return.
•February (฿41,546) and May (฿40,026) are the most expensive.

Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

Afternoon flights to Washington, D.C. Dulles Intl Airport are the cheapest at ฿32,359 return on average. Night flights are the most expensive at ฿40,465.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

Flights under ฿35,336 are considered a good deal. 25% of KAYAK users found return flights to Washington, D.C. Dulles Intl Airport at or below these prices, with the lowest fares from:
•Bangkok Suvarnabhumi Airport ฿35,310.

When are flights to Washington, D.C. Dulles Intl Airport the cheapest?

Flights to Washington, D.C. Dulles Intl Airport are cheapest 15 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Washington, D.C. Dulles Intl Airport

Low season

January

Cheapest flight

฿14,930
Beat the crowds with an average 47% drop in travellers.
The most popular month to fly with an average 77% increase in travellers.
One-way flight from Bangkok Suvarnabhumi Airport to Washington, D.C. Dulles Intl Airport

When to book flights to Dulles Intl

Are your dates flexible? Find out the best times to travel to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Washington, D.C. Dulles Intl Airport, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to Washington, D.C. Dulles Intl Airport is a good deal?

    A good deal on a flight to Washington, D.C. Dulles Intl Airport is around ฿35,336 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • Which city has the cheapest flights to Washington, D.C. Dulles Intl Airport?

    Based on fares booked in the past 5 days, the cheapest flights to Washington, D.C. Dulles Intl Airport are from Bangkok, starting at ฿25,975 return.

  • How expensive are last-minute flights to Washington, D.C. Dulles Intl Airport?

    Last-minute fares to Washington, D.C. Dulles Intl Airport (booked within two weeks of departure) are typically 7% higher than the average return fare of ฿38,864.

  • What is the difference between the most popular and the most frequent airline at Washington, D.C. Dulles Intl Airport?

    ซาอุเดียแอร์ไลน์ operates the most flights from Thailand to Washington, D.C. Dulles Intl Airport at 0 per week, while AIR PREMIA is the airline most often selected by KAYAK users searching for flights from Thailand to Washington, D.C. Dulles Intl Airport. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve Washington, D.C. and the surrounding area?

    Flights to Washington, D.C. can arrive at several major airports serving the metro area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Nearby alternatives within 80.5 km of Washington, D.C. include Washington, D.C. Reagan-National (DCA), Fort Meade Tipton (FME) and Baltimore/Washington (BWI). These airports are not in Washington, D.C. itself but may be useful depending on your route, airline, and onward travel plans.

Your guide to booking Washington, D.C. Dulles Intl Airport flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Washington, D.C. Dulles Intl Airport, book around 15 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 23% lower during this window than last-minute fares.
  • For flights to Washington, D.C. Dulles Intl Airport, a good return fare is around ฿35,336. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to Washington, D.C. Dulles Intl Airport in March. Return fares historically average ฿35,331, making March the cheapest month to travel based on KAYAK data from the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to midday to save up to ฿8,107 on a return flight. Midday flights to Washington, D.C. Dulles Intl Airport average ฿32,359 compared to ฿40,465 for evening flights.
  • Once you arrive in Washington, D.C. Dulles Intl Airport, a few great places to start are Vietnam Veterans Memorial and Nationals Park. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top 5 airlines flying to Dulles Intl

 
Need help choosing which airline to fly with to Dulles Intl? 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 1219 reviews
8.1Food
8.7Crew
8.3Comfort
8.5Boarding
8.2Entertainment
Airline reviews

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

10.0 ExcellentFiruz, Apr 2026
Read more Korean Air reviews

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

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.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

Long haul from Chicago to Tokyo was great, traveled in the ROOM on ANA and experience was great all around. The flight from Tokyo to Bangkok was fine. Definitely a good way to go. Should have stopped in Tokyo for a bit.

Refer to the Osaka-Tokyo one, it explained how I felt about both flights

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

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.

The flight went great. Of course sleeping is always a challenge for me when sitting up but there’s nothing they could’ve done about that. All went as great as it could’ve. Food great, friendly flight attendants and good entertainment.

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.

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

Good could be better. Crew is good but not great. Not much snack options for kids. Bathrooms were not cleaned on time

The crew were really bad mannered! And spoiled all my mood throughout the flight!

Limit the number of usage of wine or please arrange our seats. The passenger was drunk on this flight and not on Thiruvananthapuram to Abudhabi.

The seats seemed smaller than other business class offerings. The entertainment menu was limited. Flight crew was good.

It was excellent service in the snow storm gives us hotel and transportation. It will be more better if u can add one more meal because it’s a long flight boring journey. If you give extra meal time passes faster and can enjoy the trip better

Food quality and varites were very minimum. Surprised to have no desserts. Business class tickets should have lounge access and seats selection. They should be allowed to board while people with wheel chair, secial assistance and family with childrem.

Good flight. There were a few issues with the flat bed. It was some technical issues. Otherwise everything was good

The crew could have been more friendly and could have offered to make the beds. Also, Ethiad should have more vegetarian food options.

1st of all on February 27th Abu Dhabi to Delhi flight the seat wasn't comfortable at all, coming back the Lounge at Abu Dhabi didn't have anything. Than the Food in the flight

Overall mediocre experience. Check in was good. They're were discriminatory. They were not attentive, food choices were not vegetarian friendly. The food served was frozen.

Worst boarding experience, flight extremely delayed causing super tight connect and deplaning was a disaster as ppl were pushing and shoving to get off. Then after flying over 8 hours had to get off a job to next flight. Limited beverage service in Business class (water or white wine) no food. The plane was very cold (temperature) so uncomfortable

The business class service was very good. The crew was helpful and the food was enjoyable. Boarding was well organized.

Entertainment was great. Seats were good. They did not have my pre-ordered hot food product available but did comp me something cold in place of the item.

No water or beverage was provided. I had to ask for water. The sole flight attendant had more interest in selling the credit card. In addition when we got to Dulles the plane and gate were misaligned and it took at least 15 minutes to get off the plane.

Flight was delayed almost an hour because the cleaning crew broke one of the bathroom doors.

When we boarded we were treated with care and it never stopped. Got towels before breakfast and after snacks was a lovely touch!

The flight crew was the worst I've experienced. If they worked for me, I would fire them immediately. They never smiled, they seemed angry and avoided passengers as much as possible. The food was not edible, and my luggage was lost. I will never fly United again!!!

Fought with Lufthansa was poor, seats are uncomfortable, food was bad and luggage did not arrive to IA

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.

Travelling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Alexandria
Arlington
Ashburn
Towson
Fairfax
Silver Spring
Bethesda
Falls Church

More options for your flight to Dulles Intl