$459 Find Cheap Flights from Reagan Washington National Airport to Thailand - Compare and Save

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Cheap Flights from Reagan-National to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Phuket City
Phuket City2 stops$991
Chiang Mai
Chiang Mai2 stops$907
Ko Samui
Ko Samui2 stops$1,218
Phuket City
Phuket City2 stops$991
Chiang Mai
Chiang Mai2 stops$907
Ko Samui
Ko Samui2 stops$1,218
Booking Insights

Price, demand and travel trends for Washington, D.C. Reagan-National Airport to Thailand flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Washington, D.C. Reagan-National Airport to Thailand cheaper or more expensive than last year?

Fares from Washington, D.C. Reagan-National Airport to Thailand are running about 8% lower than they were around this time last year, averaging $1,128 round-trip.

What are the cheapest fares from Washington, D.C. Reagan-National Airport to Thailand right now?

Here are the cheapest round-trip fares from Washington, D.C. Reagan-National Airport to Thailand on KAYAK in the last week:

• Bangkok Suvarnabhumi (BKK) from $901
• Chiang Mai (CNX) from $907
• Phuket City (HKT) from $991

What’s the cheapest month to fly from Washington, D.C. Reagan-National Airport to Thailand?

September is the cheapest time of year to fly, with average fares of $974. Prices are highest in May, when average flight costs increase to around $1,670.

Which airport in Thailand is the cheapest to fly to from Washington, D.C. Reagan-National Airport?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Thailand are:

• Chiang Mai (CNX) from $1,128
• Phuket City (HKT) from $1,178
• Bangkok Suvarnabhumi (BKK) from $1,190

What’s the cheapest day to fly from Washington, D.C. Reagan-National Airport to Thailand?

Thursday tends to be the cheapest day to fly from Washington, D.C. Reagan-National Airport to Thailand, while Monday is the most expensive. Fares run about 18% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Washington, D.C. Reagan-National Airport to Thailand?

Data from the past 12 months shows it's cheapest to fly to Thailand during the morning with average prices of $1,131. The evening is the most expensive time to fly, with average prices of $1,324.

Key details for Washington, D.C. Reagan-National Airport to Thailand flights

Low season

April

Cheapest flight

$459
Beat the crowds with an average 61% drop in travelers.
The most popular month to fly with an average 80% increase in travelers.
One-way flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport

Your Washington, D.C. Reagan-National Airport to Thailand flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Washington, D.C. Reagan-National Airport to Thailand?

    Yes. Fares from Washington, D.C. Reagan-National Airport to Thailand are low right now. As a rule of thumb, a round-trip under $1,063 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Washington, D.C. Reagan-National Airport to Thailand?

    Over the past 12 months, round-trip fares from Washington, D.C. Reagan-National Airport to Thailand have ranged from $1,063 to $1,398.

  • What are the main airports serving Thailand?

    Thailand has 33 airports. The three busiest are Bangkok Suvarnabhumi (BKK) (71% of arrivals), Chiang Mai (CNX) (19%) and Phuket City (HKT) (10%).

  • Which cabin classes are available on flights from Washington, D.C. Reagan-National Airport to Thailand?

    On flights from Washington, D.C. Reagan-National Airport to Thailand you can book Economy Class, Premium Economy Class or Business Class.

  • What are some popular landmarks in Thailand?

    KAYAK travelers' favorite landmarks in Thailand include:

    • Lamai Beach
    • Pratunam
    • Chaweng Beach
    • Phuket Old Town

Your guide to booking Washington, D.C. Reagan-National Airport to Thailand flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for September when flights are typically cheapest and avoid May when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Monday cost about 18% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Chiang Mai (CNX) is the cheapest airport to fly into from Washington, D.C. Reagan-National Airport. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Bangkok, which is the most popular destination in Thailand. From there, it's easy to continue on to other popular destinations such as Pattaya, Phuket City and Chiang Mai.

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.
8.3
ANAOverall score based on 1325 reviews
7.8Food
8.2Comfort
8.5Boarding
8.0Entertainment
8.7Crew
Airline reviews

It was so disappointed trip by unexpected company's fault delay. It had taken 3 hours delay for mechanical maintenance plus another 3 hours for bad weather.

2.0 Mediocreemiko, Jul 2026
Read more ANA reviews

It was so disappointed trip by unexpected company's fault delay. It had taken 3 hours delay for mechanical maintenance plus another 3 hours for bad weather.

One of the business class panels where we were sitting was broken and it didn’t close. Therefore, the be privacy was limited.

12 of the 14 hours were in the dark, all during daylight. Didn’t use my light because it disturbed other people it was illuminating. 14 hours sitting upright in a cramped space was horrible.

Service is great. Seat is ok. Not much storage room and seat is hard but seat topper was nice. Cabin was very warm most of the flight. Washoku Food was good.

I like the service very much. The food just okay but maybe different culture who like, who don't like.

Seats had more space than expected. No recline, that is good.

We purchased premium economy seats 9 months ago and got bumped to economy when we tried to board the plane. It was a huge fiasco while they struggled to find us seats. I tried reaching out to Kayak to see how we can get refunded for the extra money we spent on premium but have heard nothing back. It was a 14 hour flight and were disappointed that we lost our seats after selecting them 9 months ago.

Excellent. All the ticket prices have gone up so much. With only economy as the option, I thought I better pay for a good airline and I am glad I took ANA. The only thing is the long layover at Hanaeda enroute to Singapore. Any chance to bring back the service to land at Narita instead for the transit and a shorter layover will be fantastic. I am a fan of ANA.

The flight was canceled due to a mechanical problem. The rebooked flights were snot good. Many complexities. Will not use a third party booking again.

Our flight that was before this one was delayed, and I appreciate that this airline sent a very nice flight attendant to pick us up at the Chicago airport and walked us to the gate. They waited for us, so we didn't miss the flight. That was amazing and outstanding customer service! We appreciate you so much!!

I don't know why the crew decided to board 15 minutes early without informing anyone not at the gate. Why would you have the app send a notification that we're boarding on time, instead board early, and then rush me to the gate. Then have me check my carry-on when I specifically packed my bag as to not do so.

Long delays at both DCA and MSP; Crew did not keep us informed (or very little). Airplane was showing signs of heavy use (not up to Delta standards). Food options for Business Class have dropped in quality. After landing we sat on tarmac for maybe 25 minutes with no provided chance to use the bathroom and crew did not tell us what was going on or give an estimated time to expect to be at a gate.

Flight was delayed for about an hour but overall good experience

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

The flight from Frankfurt to Pisa was cancelled and we were rebooked to route through London. The flight to London was delayed for maintenance issues and we missed our connection flight. Lufthansa automatically rebooked my wife on the next flight but I was not rebooked. I spent over an hour trying to get onto the flight. Ultimately my wife’s gate checked bag from Washington did not arrive in Pisa and remained in London. Very bad experience overall.

Flight attendant incredibly rude. Stuck her finger in my drink and didn’t even have the courtesy to apologize.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Never nice, United Express partners always do an amazing job.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

The flight was on time and the crew were great.

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

The only problem that I have is if you have questions about your flight ✈️ there's no one to communicate with when you call 📱.

The gate and flight crew were very responsive and professional. They went out of their way to make sure this senior had a good flight.

The upgraded seats on the smaller flights I guess is a toss up if you get a full meal. We paid less for the ticket on the way there and got a full meal where we got a snack and drink on the way home. The lounge was also in the other terminal too. No entertainment on the seat and no wifi on the plane.

I checked a bag and there was only one agent to assist all customers with any issues.

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

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

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

The flight was delayed at the last moment quoting an absurd weather reason. This delay led to an issue with my connecting flight. I was made to run (literary) from this flight to the next one ( as they preponed departure. I was still in my DCA to YYZ flight when the boarding started for the next connecting flight. After my sprint to get the connecting flight, found that no place for my carry on. Had to sit for 3 hours with my back-pack on my lap , it was the most uncomfortable and inconvenient journey with little to no empathy shown by cabin crew in both flights. Another poor show from Air Canada!! Cant help because of lack of options !!

Made me check my carry on despite there being dozens of empty bins when I boarded which significantly inconvenienced me.

The people are great! The trip to Japan is simply never ending!!! Not the problem of the airlines, though.

More options for your flight from Reagan-National to Thailand

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