฿14,606 Find Cheap Flights from Washington Dulles Airport to Bangkok – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Bangkok departing on 5/9. 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.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
฿30,421
Typical prices: ฿30,824-฿38,614
เอทิฮัดแอร์เวย์
Thu 13/8Tue 6/10
IAD - BKK • 1 stop
Cheapest one-way flight
฿14,606
Typical prices: ฿15,781-฿18,803
เอทิฮัดแอร์เวย์
Sat 5/9
IAD - BKK • 1 stop
Top airlines
Cheapest • from ฿30,421 (return)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 21% compared to booking last minute.
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Bangkok that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Dulles Intl to Bangkok

Thu 13 Aug - Tue 6 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 06:45
IAD
-
BKK
28h 35m
1 stop
เอทิฮัดแอร์เวย์ Logo
21:00 - 09:45
BKK
-
IAD
23h 45m
1 stop
฿30,421เอทิฮัดแอร์เวย์
Thu 24 Sep - Sun 4 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:55
IAD
-
BKK
21h 45m
1 stop
เอทิฮัดแอร์เวย์ Logo
09:15 - 09:45
BKK
-
IAD
35h 30m
1 stop
฿30,488เอทิฮัดแอร์เวย์
Sat 28 Nov - Fri 18 Dec
เตอร์กิชแอร์ไลน์ Logo
13:30 - 04:30
IAD
-
BKK
27h 00m
1 stop
เตอร์กิชแอร์ไลน์ Logo
08:45 - 19:25
BKK
-
IAD
22h 40m
1 stop
฿30,488เตอร์กิชแอร์ไลน์
Sat 28 Nov - Wed 23 Dec
เตอร์กิชแอร์ไลน์ Logo
13:30 - 04:30
IAD
-
BKK
27h 00m
1 stop
เตอร์กิชแอร์ไลน์ Logo
10:20 - 19:25
BKK
-
IAD
45h 05m
1 stop
฿30,488เตอร์กิชแอร์ไลน์
Sat 8 Aug - Thu 10 Sep
เอทิฮัดแอร์เวย์ Logo
15:10 - 06:45
IAD
-
BKK
28h 35m
1 stop
เอทิฮัดแอร์เวย์ Logo
21:00 - 09:45
BKK
-
IAD
23h 45m
1 stop
฿30,488เอทิฮัดแอร์เวย์
Mon 19 Oct - Sun 25 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:55
IAD
-
BKK
21h 45m
1 stop
เอทิฮัดแอร์เวย์ Logo
20:50 - 10:05
BKK
-
IAD
24h 15m
1 stop
฿30,488เอทิฮัดแอร์เวย์
Sat 10 Oct - Thu 15 Oct
เตอร์กิชแอร์ไลน์ Logo
21:40 - 05:10
IAD
-
BKK
20h 30m
1 stop
เตอร์กิชแอร์ไลน์ Logo
11:15 - 19:45
BKK
-
IAD
43h 30m
1 stop
฿31,495เตอร์กิชแอร์ไลน์
Wed 6 Jan - Fri 29 Jan
Korean Air Logo
11:50 - 21:30
IAD
-
BKK
45h 40m
1 stop
Korean Air Logo
00:55 - 17:30
BKK
-
IAD
28h 35m
2 stops
฿32,100Korean Air
Thu 27 Aug - Fri 11 Sep
Korean Air Logo
10:16 - 23:35
IAD
-
BKK
26h 19m
2 stops
Korean Air Logo
23:30 - 11:05
BKK
-
IAD
22h 35m
1 stop
฿33,611Korean Air
Tue 3 Nov - Tue 17 Nov
Korean Air Logo
11:50 - 23:20
IAD
-
BKK
23h 30m
1 stop
Korean Air Logo
00:55 - 09:50
BKK
-
IAD
20h 55m
1 stop
฿34,920Korean Air
Booking Insights

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

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

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

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Bangkok departing in August.

Flight prices are below average for this route right now.

Flights to Bangkok from Washington, D.C. Dulles Intl Airport usually cost between ฿32,536 and ฿41,199 in August.
The lowest price found in the past 5 days was ฿30,421 on เอทิฮัดแอร์เวย์ (13 Aug–6 Oct).

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 September, where tickets cost ฿31,495 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is ฿50,936 and ฿42,441 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 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Cheapest flight

฿14,606
Flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

When to book flights from Dulles Intl to Bangkok

Are your dates flexible? Find out the best times to travel from Dulles Intl to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Bangkok 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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Bangkok was ฿14,606 for a one-way ticket and ฿30,421 for a return.

  • Which airports will I be using when flying from Washington Dulles Airport to Bangkok?

    Washington Dulles Airport is served by only 1 airport and there are 2 airports in Bangkok. You will leave Washington Dulles Airport 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 Dulles Airport to Bangkok?

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

  • Which airline alliances offer flights from Washington Dulles Airport to Bangkok?

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

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Bangkok.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Bangkok?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Bangkok with an airline and back to Washington Dulles Airport 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 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 Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Bangkok

  • 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 airlines flying from Dulles Intl to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Bangkok. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Bangkok? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1221 reviews
8.3Comfort
8.5Boarding
8.2Entertainment
8.7Crew
8.1Food
Airline reviews

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

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

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

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

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

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

Excellent service, love the extra amenities (water bottles, blankets, etc.).

It would be better if flight crew can clearly communicate in english. But they are kind and accommodating. Food is good, especially the sandwiches on the self-serving snack trays. They are better than the ones served. Boarding was organized.

They had the same movie choice as my previous flight, not much of a choice, movies were not up to date, music was uninteresting. Other than sitting on the ground for 40 minutes after boarding the plane, with pilot telling us that they couldn't load the plane because of rain, (bullshit) We finally got into Bangkok of course 40 minutes late.

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

After the gauntlet of unnecessary security, and the two mile jog to make the flight, the flight was delayed 20 minutes on the ground for takeoff.. However, once in the air, the crew gave its usual excellent service.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

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

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

Awful seating. Bad food. Staff only have one bottle of water and no cans.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

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.

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!!

I’ve been traveling for 20 years. I tried Turkish airline for the first time horrible horrible service and it would be my last time even if I get offer for a free ticket, I will not accept it. They have races and the worst Flight attendant

It wasn't good. I didn’t understand. They changed 320 dollars for 2 luggage. My ticket was regular and I paid almost 1200.00 dollars. Why they did charge? I want my money back.. thanks Yılmaz polat

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

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