$483 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 9/15. 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$1,011
Chiang Mai
Chiang Mai2 stops$1,098
Ko Samui
Ko Samui2 stops$1,759
Krabi
Krabi3 stops$1,473
Phuket City
Phuket City2 stops$1,011
Chiang Mai
Chiang Mai2 stops$1,098
Ko Samui
Ko Samui2 stops$1,759
Krabi
Krabi3 stops$1,473

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, Feb 3 - Tue, Feb 10
Singapore Airlines Logo
9:30 am - 6:45 pmDCA-BKK
45h 15m2 stops
Singapore Airlines Logo
3:40 pm - 8:55 pmBKK-DCA
41h 15m2 stops
$890Singapore Airlines
Find Deal
Tue, Feb 3 - Tue, Feb 10
Singapore Airlines Logo
9:30 am - 2:35 pmDCA-BKK
41h 05m2 stops
Singapore Airlines Logo
3:40 pm - 8:55 pmBKK-DCA
41h 15m3 stops
$892Singapore Airlines
Find Deal
Mon, Sep 1 - Wed, Sep 10
ANA Logo
3:30 pm - 4:35 amDCA-BKK
26h 05m2 stops
ANA Logo
9:35 pm - 2:16 pmBKK-DCA
27h 41m2 stops
$898ANA
Find Deal
Tue, Jan 27 - Wed, Feb 11
ANA Logo
2:00 pm - 5:10 amDCA-BKK
27h 10m2 stops
ANA Logo
7:10 am - 6:52 pmBKK-DCA
23h 42m2 stops
$901ANA
Find Deal
Mon, Sep 1 - Mon, Sep 15
Korean Air Logo
8:35 am - 11:25 pmDCA-BKK
27h 50m2 stops
Korean Air Logo
11:30 pm - 3:03 pmBKK-DCA
26h 33m2 stops
$913Korean Air
Find Deal
Mon, Sep 29 - Mon, Oct 6
American Airlines Logo
9:20 am - 5:50 amDCA-BKK
33h 30m2 stops
American Airlines Logo
10:05 pm - 8:59 pmBKK-DCA
33h 54m2 stops
$927American Airlines
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Wed, Sep 17 - Wed, Oct 1
Cathay Pacific Logo
5:30 pm - 5:20 pmDCA-HKT
36h 50m2 stops
Cathay Pacific Logo
6:20 pm - 7:58 pmHKT-DCA
36h 38m2 stops
$1,011Cathay Pacific
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Wed, Nov 19 - Tue, Dec 16
Cathay Pacific Logo
11:55 am - 5:35 pmDCA-HKT
41h 40m2 stops
Cathay Pacific Logo
12:20 pm - 6:54 pmHKT-DCA
42h 34m2 stops
$1,017Cathay Pacific
Find Deal
Sat, Sep 27 - Sat, Oct 4
American Airlines Logo
1:30 pm - 7:50 amDCA-HKT
31h 20m2 stops
American Airlines Logo
8:30 pm - 7:58 pmHKT-DCA
34h 28m2 stops
$1,249American Airlines
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Mon, Dec 8 - Wed, Dec 24
Korean Air Logo
6:05 am - 9:40 pmDCA-HKT
51h 35m2 stops
Korean Air Logo
11:20 pm - 11:00 pmHKT-DCA
35h 40m2 stops
$1,344Korean Air
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 May, when tickets cost $1,172 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is $1,783 and $1,706 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$483
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 15% increase in price.
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.
8.4
Korean AirOverall score based on 1131 reviews
8.7Crew
8.1Food
8.5Boarding
8.3Comfort
8.2Entertainment
Airline reviews

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.

8.0 ExcellentMatt, Aug 2025ATL - ICN
Read more Korean Air reviews

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

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

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Great. Efficient boarding process with the face recognition. Plenty of cabin space for luggage.

Entertainment for kids was good. Good was terrible, needs lots of work.

As before, my only problem was not being able to download my boarding passes prior to arrival at the airport. Everything else was perfect.

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.

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

The economy seats are much indeed roomier. Meals needs improvement.

When comes to Taiwan airlines China airlines is the best rest are pure trash

flight delayed 45 mins - missed connection - 1 hr layover became 8 hr layover waiting for next flight -

Refreshments and Air Hostess was good. Issues with customs in Toronto caused flight to depart and left me behind twice. Vouchers for delayed flight needs to increase.

No paper towels in bathroom. Aisle seat difficult to get out of Other than those, excellent service

Plane was packed but flew on-time, and the comfort level was great! All planes are a bit cramped, but the in flight entertainment was superb, snacks were nice, and the crew was polite. Got into Calgary on schedule...all we could ask for

Long wait to check in at the priority counter in Toronto

I had no communication, receipt etc from Air Canada until hours before flight

They could care less about you. Just under a 4 hour delay in Seattle, leading into a missed connection in Vancouver, which led to 2 more delays that added up to 3 more hours leaving us to have to sleep on the floor of the Toronto airport cause they don't help you find accomodations and they just book you on the next flight out. Took an additional 14 hours to get home. Always given the brush off to get rid of us. Worst airline ever

All good but I could barely get my arms and legs into the room in front of me. Have never been so cramped before. Plane left the gate on time, taxied very quickly and took off without waiting. Unique. Arrival on time. No problem

Both flights are delayed so I rate the whole experience as mediocre.

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

I had a good experience. I liked being informed about the status of my luggage

Everything you need to know for your flight from Reagan-National to Thailand

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