฿14,606 Find Cheap Flights from Washington Dulles Airport to Thailand – 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 Thailand 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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Best Thailand Flight Deals from Dulles Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop฿30,421
Chiang Mai
Chiang Mai1 stop฿35,491
Phuket City
Phuket City1 stop฿30,555
Krabi
Krabi2 stops฿34,618
Ko Samui
Ko Samui2 stops฿35,827
Bangkok
Bangkok1 stop฿30,421
Chiang Mai
Chiang Mai1 stop฿35,491
Phuket City
Phuket City1 stop฿30,555
Krabi
Krabi2 stops฿34,618
Ko Samui
Ko Samui2 stops฿35,827

Cheap Flights from Dulles Intl to Thailand

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return 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 return flight deals from Dulles Intl to Thailand

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 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 September, when tickets cost ฿32,100 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is ฿52,917 and ฿43,382 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 a flight from Washington, D.C. Dulles Intl Airport to Thailand, 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

Low season

August

Cheapest flight

฿14,606
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (34% more expensive on average)
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 travellers 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 return 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 airlines flying 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
Korean AirOverall score based on 1221 reviews
8.5Boarding
8.2Entertainment
8.1Food
8.3Comfort
8.7Crew
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 Thailand

Information on your arrival and departure airports