$465 Find Cheap Flights from Reagan Washington National 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 Reagan-National to Thailand departing on 1/7. 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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Cheap Flights from Reagan-National to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Phuket City
Phuket City2 stops$1,026
Chiang Mai
Chiang Mai2 stops$982
Ko Samui
Ko Samui2 stops$1,422
Krabi
Krabi3 stops$2,003
Phuket City
Phuket City2 stops$1,026
Chiang Mai
Chiang Mai2 stops$982
Ko Samui
Ko Samui2 stops$1,422
Krabi
Krabi3 stops$2,003

Book Cheap Reagan-National to Thailand Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National 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 round-trip flight deals from Reagan-National to Thailand

Tue, Jan 13 - Sun, Jan 25
China Airlines Logo
9:59 am - 4:45 pmDCA-BKK
42h 46m2 stops
China Airlines Logo
2:35 am - 8:00 pmBKK-DCA
53h 25m2 stops
$927China Airlines
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Wed, Mar 11 - Wed, Mar 25
Delta Logo
9:40 am - 12:45 amDCA-BKK
28h 05m2 stops
Delta Logo
12:55 am - 11:39 pmBKK-DCA
33h 44m2 stops
$928Delta
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Mon, Apr 6 - Tue, Apr 28
United Airlines Logo
11:30 am - 9:45 amDCA-BKK
35h 15m3 stops
United Airlines Logo
9:35 am - 3:59 pmBKK-DCA
41h 24m2 stops
$932United Airlines
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Thu, Mar 12 - Wed, Mar 25
Korean Air Logo
8:36 am - 12:45 amDCA-BKK
29h 09m2 stops
Korean Air Logo
12:55 am - 5:00 pmBKK-DCA
27h 05m2 stops
$933Korean Air
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Mon, Mar 23 - Tue, Apr 28
United Airlines Logo
12:00 pm - 11:25 amDCA-BKK
36h 25m3 stops
United Airlines Logo
7:00 am - 9:53 pmBKK-DCA
25h 53m2 stops
$935United Airlines
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Sun, Mar 29 - Tue, Apr 14
Korean Air Logo
8:45 pm - 11:40 pmDCA-BKK
39h 55m2 stops
Korean Air Logo
9:50 am - 3:07 pmBKK-DCA
40h 17m2 stops
$939Korean Air
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Wed, Feb 11 - Mon, Feb 16
Cathay Pacific Logo
9:35 am - 11:20 amDCA-HKT
37h 45m2 stops
Cathay Pacific Logo
6:35 pm - 11:00 pmHKT-DCA
40h 25m2 stops
$1,026Cathay Pacific
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Fri, Feb 6 - Sun, Feb 15
Cathay Pacific Logo
9:35 am - 5:35 pmDCA-HKT
44h 00m2 stops
Cathay Pacific Logo
6:35 pm - 6:59 pmHKT-DCA
36h 24m2 stops
$1,076Cathay Pacific
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Tue, Jan 20 - Mon, Feb 9
Multiple Airlines Logo
6:56 pm - 10:35 amDCA-CNX
51h 39m2 stops
Multiple Airlines Logo
11:50 am - 5:56 pmCNX-DCA
42h 06m2 stops
$1,104Multiple Airlines
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Sun, Jan 18 - Sat, Feb 14
Multiple Airlines Logo
9:59 am - 10:35 amDCA-CNX
60h 36m2 stops
Multiple Airlines Logo
11:50 am - 5:59 pmCNX-DCA
42h 09m2 stops
$1,131Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Reagan-National to Thailand flights

Get data-powered insights and trends into flights from Reagan-National 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. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Thailand is February, when tickets cost $977 (return) on average. On the other hand, the most expensive months are April and June, when the average cost of round-trip tickets is $1,761 and $1,660 respectively.

What’s the cheapest day of the week to fly from Reagan Washington National Airport to Thailand?

The average price of all round-trip flights from Washington, D.C. Reagan-National Airport to Thailand clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Reagan Washington National Airport to Thailand, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Thailand, Monday is the cheapest day to fly and Wednesday is the most expensive.

Good to know

Low seasonFebruary
Cheapest flight$465
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Reagan Washington National Airport to Bangkok

FAQs - booking Thailand flights

  • How does KAYAK find such low prices on flights from Reagan Washington National 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 Reagan Washington National Airport to Thailand.

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

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

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to Thailand?

    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 from Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National Airport to Thailand up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Thailand?

    The cheapest time of day to fly to Thailand is generally at night, when round-trip flights cost $1,203 on average. Morning departures are around 9% more expensive than evening flights, on average. The most expensive time of day to fly to Thailand is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,680.

Reviews of the top 4 airlines serving from Reagan-National to Thailand

 
Need help choosing which airline to fly with from Reagan-National 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 1174 reviews
8.3Comfort
8.7Crew
8.2Entertainment
8.5Boarding
8.1Food
Airline reviews

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

10.0 ExcellentAnonymous, Nov 2025MNL - ICN
Read more Korean Air reviews

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

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

Not many people, so you can lay down on two seats

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Super delayed. Unnecessary. Need more competent people doing logistics to keep things moving on time. Totally unacceptable.

Flew from lax economy on cathay 777. Seat configuration 3-4-3. When the forward seat reclines it feels like someone is leaning forward and staring you. If you are slightly big tray tables will touch your abdomen even with seats upright. AVOID this above 777 configuration at all cost for a long flight. However their Airbus 350 3-3-3 configuration felt spacious and Seats wider.

Leg room wasn't that great. Other than that it was a good flight

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

Great entertainment system, the seat is a bit old style needs refurbishment

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

Crew was great. But a bit understaffed. The business class seat, etc were dated. But comfortable. Some legs had entertainment system from a decade ago. Selections were rather poor. Food was mediocre at best. Actually poor for business class standards. I liked the lounge in Hong Kong. Showers were great. Food was nice.

Everything was fine and I have no complaints or things to note.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

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