DCA - CNX

$569 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 2/3. 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

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
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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

Tue, Jan 27 - Mon, Feb 2
Multiple Airlines Logo
7:30 am - 9:25 amDCA-CNX
37h 55m3 stops
Multiple Airlines Logo
9:40 pm - 7:13 pmCNX-DCA
33h 33m3 stops
$962Multiple Airlines
Find Deal
Tue, Jan 27 - Sun, Feb 1
Delta Logo
6:00 am - 10:55 pmDCA-CNX
28h 55m2 stops
Delta Logo
12:15 am - 11:20 pmCNX-DCA
35h 05m2 stops
$1,078Delta
Find Deal
Tue, Jan 27 - Mon, Feb 2
Multiple Airlines Logo
9:59 am - 10:35 amDCA-CNX
36h 36m2 stops
Multiple Airlines Logo
11:50 am - 8:00 pmCNX-DCA
44h 10m2 stops
$1,113Multiple Airlines
Find Deal
Sun, Oct 26 - Wed, Oct 29
China Airlines Logo
9:59 am - 10:25 amDCA-CNX
37h 26m2 stops
China Airlines Logo
11:25 am - 8:00 pmCNX-DCA
43h 35m2 stops
$1,114China Airlines
Find Deal
Mon, Jan 26 - Sun, Feb 1
Delta Logo
9:59 pm - 10:55 pmDCA-CNX
36h 56m2 stops
Delta Logo
12:15 am - 12:47 pmCNX-DCA
24h 32m2 stops
$1,128Delta
Find Deal
Tue, Jan 27 - Mon, Feb 2
EVA Air Logo
9:59 am - 10:35 amDCA-CNX
36h 36m2 stops
EVA Air Logo
11:50 am - 8:00 pmCNX-DCA
44h 10m2 stops
$1,142EVA Air
Find Deal
Thu, Jan 8 - Sat, Jan 17
China Airlines Logo
8:00 am - 10:25 amDCA-CNX
38h 25m2 stops
China Airlines Logo
11:25 am - 5:56 pmCNX-DCA
42h 31m2 stops
$1,157China Airlines
Find Deal
Thu, Mar 5 - Sun, Mar 8
Korean Air Logo
8:20 am - 10:55 pmDCA-CNX
26h 35m2 stops
Korean Air Logo
12:15 am - 6:06 pmCNX-DCA
28h 51m2 stops
$1,263Korean Air
Find Deal
Fri, Dec 5 - Sun, Dec 14
EVA Air Logo
9:59 am - 10:35 amDCA-CNX
36h 36m2 stops
EVA Air Logo
11:50 am - 8:00 pmCNX-DCA
44h 10m2 stops
$1,408EVA Air
Find Deal
Wed, Dec 10 - Fri, Dec 19
Korean Air Logo
6:59 am - 10:55 pmDCA-CNX
27h 56m2 stops
Korean Air Logo
12:15 am - 10:01 pmCNX-DCA
33h 46m2 stops
$1,847Korean Air
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $1,078 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$962
Multiple Airlines
Tue 1/27Mon 2/2
DCA - CNX • 3 stops
Cheapest one-way
$569
Korean Air
Tue 2/3
DCA - CNX • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
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 Delta ($1,078) and China Airlines ($1,114).

Which airlines fly non-stop between Washington, D.C. Reagan-National Airport and Chiang Mai?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. Reagan-National Airport to Chiang Mai.

There is just one airline that flies from Washington, D.C. Reagan-National Airport to Chiang Mai direct and that is Delta. The best round-trip deal found from Delta for the route is $1,068.

Good to know

Cheapest flight$569
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 $569 for a one-way ticket and $962 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 7975 reviews
7.3Food
7.9Entertainment
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

8.0 ExcellentAnonymous, Oct 2025ATL - STL
Read more Delta reviews

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

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.

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

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