$473 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 11/18. 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

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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$996
Chiang Mai
Chiang Mai3 stops$962
Ko Samui
Ko Samui2 stops$1,401
Krabi
Krabi2 stops$2,415
Phuket City
Phuket City2 stops$996
Chiang Mai
Chiang Mai3 stops$962
Ko Samui
Ko Samui2 stops$1,401
Krabi
Krabi2 stops$2,415

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

Mon, Jan 12 - Tue, Jan 27
Singapore Airlines Logo
5:01 pm - 8:00 pmDCA-BKK
38h 59m2 stops
Singapore Airlines Logo
12:00 pm - 8:00 pmBKK-DCA
44h 00m2 stops
$894Singapore Airlines
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Wed, Nov 26 - Tue, Dec 2
Korean Air Logo
6:59 am - 11:20 pmDCA-BKK
28h 21m2 stops
Korean Air Logo
2:05 am - 12:51 pmBKK-DCA
46h 46m2 stops
$906Korean Air
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Wed, Nov 19 - Sat, Dec 13
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
$926China Airlines
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Wed, Jan 7 - Tue, Feb 3
Delta Logo
6:00 am - 12:45 amDCA-BKK
30h 45m2 stops
Delta Logo
12:55 am - 11:59 amBKK-DCA
23h 04m2 stops
$928Delta
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Mon, Nov 3 - Mon, Dec 8
United Airlines Logo
6:00 am - 12:20 amDCA-BKK
30h 20m2 stops
United Airlines Logo
9:10 am - 8:55 pmBKK-DCA
23h 45m2 stops
$936United Airlines
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Thu, Nov 27 - Tue, Dec 23
United Airlines Logo
12:00 pm - 11:25 amDCA-BKK
35h 25m3 stops
United Airlines Logo
4:55 pm - 9:59 amBKK-DCA
29h 04m3 stops
$948United Airlines
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Fri, Oct 31 - Sat, Nov 15
China Airlines Logo
9:59 am - 1:35 amDCA-BKK
28h 36m2 stops
China Airlines Logo
2:05 pm - 8:00 pmBKK-DCA
65h 55m2 stops
$952China Airlines
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Mon, Oct 27 - Tue, Nov 18
Delta Logo
6:10 am - 11:20 pmDCA-BKK
30h 10m2 stops
Delta Logo
9:40 am - 11:10 pmBKK-DCA
25h 30m2 stops
$953Delta
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Mon, Jan 12 - Sun, Jan 25
Cathay Pacific Logo
6:42 pm - 5:35 pmDCA-HKT
34h 53m2 stops
Cathay Pacific Logo
6:35 pm - 11:00 pmHKT-DCA
40h 25m2 stops
$1,042Cathay Pacific
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Sun, Jan 18 - Wed, Feb 4
Cathay Pacific Logo
3:24 pm - 5:35 pmDCA-HKT
62h 11m2 stops
Cathay Pacific Logo
6:35 pm - 11:59 pmHKT-DCA
41h 24m2 stops
$1,048Cathay Pacific
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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 January, when tickets cost $1,050 (return) on average. On the other hand, the most expensive months are April and June, when the average cost of round-trip tickets is $1,783 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$473
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 25% 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 3 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.
7.9
DeltaOverall score based on 7973 reviews
8.5Crew
7.3Food
7.9Comfort
7.9Entertainment
8.2Boarding
Airline reviews

On time flight. Seat comfort could be better in the Comfort section.

10.0 ExcellentMichael, Oct 2025CLT - MSP
Read more Delta reviews

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

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.

Boarding at the airport was not well managed. Otherwise, had a good flight sitting in the first row (which I paid for). Crew was pretty friendly, and flight was smooth.

There was a flight attendant named Angela who took care of me because I injured my foot badly right before the flight. Because of the service she provided I will always fly Cathay.

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.

The economy seats are incredibly tight. A large percent of the traveling public will not fit. I will not fly Cathay again because of this. You are literally squeezing passengers for profit. The CEO should fly some economy flights.

Paid a premium a have a shorter transit time in Hong Kong, but Cathay pacific rebooked me and ended up waiting for 10 hrs in Hong Hong airport.

Special request meals are really below average. Vegetarian options are very limited if you didn't prebook.

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.

It was a smooth flight both in the sky and landing!

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Fair. What's the point of partnering with United if we cannot use the lounge. My wife is a frequent flier with United but we were refused access to Air Canada lounge

extremely cramped seating... absolutely no leg room and when person in front of me reclined... I was pinned in my seat... absolutely ridiculous

Didn’t realize I purchased a basic fare with no carry ons allowed. Not very well communicated. Also had seats switched without knowledge and had to pay for different ones.

We loved our Air Canada experience and will definitely fly them again. It just so happened than in the first leg of our trip their entertainment system was not working, and neither was their oven so cold meal & snacks only.

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