฿18,079 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 14/8. 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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Flight Deals

Best Thailand Flight Deals from Dulles Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop฿33,543
Chiang Mai
Chiang Mai2 stops฿35,145
Phuket City
Phuket City1 stop฿32,922
Krabi
Krabi2 stops฿34,622
Ko Samui
Ko Samui2 stops฿34,916
Bangkok
Bangkok1 stop฿33,543
Chiang Mai
Chiang Mai2 stops฿35,145
Phuket City
Phuket City1 stop฿32,922
Krabi
Krabi2 stops฿34,622
Ko Samui
Ko Samui2 stops฿34,916

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 1 Oct - Wed 7 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 18:20
IAD
-
HKT
40h 10m
1 stop
เอทิฮัดแอร์เวย์ Logo
21:20 - 09:45
HKT
-
IAD
23h 25m
1 stop
฿32,922เอทิฮัดแอร์เวย์
Thu 27 Aug - Fri 4 Sep
เอทิฮัดแอร์เวย์ Logo
15:10 - 18:20
IAD
-
HKT
40h 10m
1 stop
เอทิฮัดแอร์เวย์ Logo
09:25 - 09:45
HKT
-
IAD
35h 20m
1 stop
฿32,955เอทิฮัดแอร์เวย์
Tue 29 Sep - Sat 3 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 06:40
IAD
-
HKT
28h 30m
1 stop
เอทิฮัดแอร์เวย์ Logo
03:20 - 09:45
HKT
-
IAD
41h 25m
1 stop
฿33,249เอทิฮัดแอร์เวย์
Tue 29 Sep - Fri 2 Oct
เอทิฮัดแอร์เวย์ Logo
15:10 - 23:50
IAD
-
HKT
21h 40m
1 stop
เอทิฮัดแอร์เวย์ Logo
03:20 - 09:45
HKT
-
IAD
41h 25m
1 stop
฿33,281เอทิฮัดแอร์เวย์
Sat 10 Oct - Wed 3 Feb
Qatar Airways Logo
21:00 - 06:20
IAD
-
BKK
22h 20m
1 stop
Qatar Airways Logo
20:30 - 15:55
BKK
-
IAD
31h 25m
1 stop
฿33,772Qatar Airways
Sun 8 Nov - Sun 15 Nov
Qatar Airways Logo
10:40 - 19:25
IAD
-
BKK
20h 45m
1 stop
Qatar Airways Logo
18:55 - 15:55
BKK
-
IAD
33h 00m
1 stop
฿33,805Qatar Airways
Mon 2 Nov - Tue 2 Mar
Multiple Airlines Logo
20:05 - 21:15
IAD
-
KBV
37h 10m
2 stops
Multiple Airlines Logo
22:00 - 15:55
KBV
-
IAD
29h 55m
2 stops
฿34,622Multiple Airlines
Sun 13 Sep - Sun 27 Sep
Multiple Airlines Logo
15:10 - 07:10
IAD
-
USM
29h 00m
2 stops
Multiple Airlines Logo
08:45 - 09:45
USM
-
IAD
36h 00m
2 stops
฿34,916Multiple Airlines
Wed 9 Sep - Wed 16 Sep
Emirates Logo
10:55 - 20:20
IAD
-
KBV
22h 25m
1 stop
Emirates Logo
12:40 - 08:40
KBV
-
IAD
31h 00m
1 stop
฿37,008Emirates
Sun 6 Sep - Mon 14 Sep
Emirates Logo
10:55 - 11:25
IAD
-
DMK
37h 30m
1 stop
Emirates Logo
23:50 - 08:40
DMK
-
IAD
43h 50m
1 stop
฿38,316Emirates
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 ฿21,283 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is ฿108,214 and ฿49,726 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 2 weeks before departure, which saves you about 19% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight฿18,079
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 1218 reviews
8.2Entertainment
8.1Food
8.5Boarding
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.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

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 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.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

No control at all at the gate , passengers were not cuing up, , some were very loud , no action taken by the attendants . It looked more like a heard of animals then humans boarding a plane .

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

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

Information on your arrival and departure airports