DCA - CNX

$763 Find Cheap Flights from Reagan Washington National Airport to Chiang Mai

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 Chiang Mai departing on 4/26. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chiang Mai, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$1,167
Multiple Airlines
vie. 9/25vie. 10/9
DCA - CNX • 2 stops
Cheapest one-way
$763
Multiple Airlines
dom. 4/26
DCA - CNX • 2 stops
Top airlines
Korean Air
Cheapest • from $1,638 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Reagan-National and Chiang Mai. You'll need at least 2 connections.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Reagan-National to Chiang Mai (DCA-CNX)

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

vie., sep. 25 - vie., oct. 9
Multiple Airlines Logo
9:30 am - 10:20 am
DCA
-
CNX
37h 50m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,167Multiple Airlines
dom., ago. 9 - jue., sep. 3
Multiple Airlines Logo
6:59 pm - 10:20 am
DCA
-
CNX
28h 21m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,257Multiple Airlines
sáb., ago. 8 - jue., sep. 3
Multiple Airlines Logo
6:59 pm - 10:20 am
DCA
-
CNX
28h 21m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,295Multiple Airlines
dom., ago. 9 - jue., sep. 3
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,339Multiple Airlines
mié., ago. 12 - vie., sep. 4
Multiple Airlines Logo
6:59 pm - 10:20 am
DCA
-
CNX
28h 21m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,345Multiple Airlines
vie., may. 1 - lun., jun. 1
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:06 pm
CNX
-
DCA
43h 31m
2 stops
$1,357Multiple Airlines
sáb., ago. 8 - jue., sep. 3
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,377Multiple Airlines
jue., sep. 24 - sáb., oct. 10
Multiple Airlines Logo
6:59 pm - 10:20 am
DCA
-
CNX
28h 21m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,380Multiple Airlines
dom., ago. 30 - mar., nov. 3
Multiple Airlines Logo
8:00 am - 10:20 am
DCA
-
CNX
39h 20m
2 stops
Multiple Airlines Logo
11:25 am - 8:00 pm
CNX
-
DCA
44h 35m
2 stops
$1,384Multiple Airlines
sáb., ago. 8 - jue., sep. 3
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,447Multiple Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Reagan-National to Chiang Mai to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Reagan Washington National Airport to Chiang Mai?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Reagan Washington National Airport to Chiang Mai were found on Korean Air ($1,638) and EVA Air ($2,086).

Find deals

Good to know

Cheapest flight$763
Flight from Reagan Washington National Airport to Chiang Mai

When to book flights from Reagan-National to Chiang Mai

Are your dates flexible? Find out the best times to travel from Reagan-National to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to Chiang Mai flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to Chiang Mai?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Chiang Mai was $763 for a one-way ticket and $1,167 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and Chiang Mai?

    A passport is required to fly from Reagan Washington National Airport to Chiang Mai.

  • Which airports will I be using when flying from Reagan Washington National Airport to Chiang Mai?

    Reagan Washington National Airport and Chiang Mai are both served by 1 main airport. You will leave Reagan Washington National Airport from Washington, D.C. Reagan-National and will be arriving at Chiang Mai.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Reagan Washington National Airport to Chiang Mai?

    SkyTeam is the only airline alliance operating flights between Reagan Washington National Airport and Chiang Mai.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Chiang Mai?

    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 Chiang Mai.

  • 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 Chiang Mai?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Reagan Washington National Airport 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 Chiang Mai?

    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 to Chiang Mai with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and CNX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Chiang Mai?

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

Reviews of the top airline flying from Reagan-National to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Chiang Mai. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Chiang Mai? 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 8404 reviews
7.2Food
8.5Crew
8.1Boarding
7.9Comfort
7.8Entertainment
Airline reviews

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

6.0 GoodAnonymous, Apr 2026
DTW - AMS
Read more Delta reviews

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

The tray table was broken and the food was terrible.

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

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

Would have been better if there was a nonstop flight from Tampa to Norfolk or Tampa to New Port News.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

The flight was smooth, the crew was great but the plane was quite old

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

Information on your arrival and departure airports

Reagan Washington National Airport (DCA)
Chiang Mai (CNX)