IAD - CNX

$597 Find Cheap Flights from Washington Dulles Airport to Chiang Mai - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Chiang Mai departing on 10/15. 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, 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
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Everything you should know

Cheapest round-trip
$1,027
Typical prices: $1,407-$1,156
Multiple Airlines
Mon 9/7Thu 9/17
IAD - CNX • 2 stops
Cheapest one-way
$597
Qatar Airways
Thu 10/15
IAD - CNX • 2 stops
Top airlines
Cheapest • from $1,130 (round-trip)
Best reviews • 8.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Chiang Mai. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $922 (round-trip)
Shortest trip • 22h 11m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 Dulles Intl to Chiang Mai (IAD-CNX)

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

Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
3:10 pm - 10:00 pm
IAD
-
CNX
43h 50m
2 stops
Multiple Airlines Logo
10:30 pm - 9:45 am
CNX
-
IAD
46h 15m
2 stops
$1,027Multiple Airlines
Thu, Sep 17 - Mon, Sep 28
Multiple Airlines Logo
9:00 pm - 11:15 am
IAD
-
CNX
27h 15m
2 stops
Multiple Airlines Logo
9:10 pm - 3:40 pm
CNX
-
IAD
29h 30m
2 stops
$1,075Multiple Airlines
Wed, Sep 30 - Thu, Oct 8
Multiple Airlines Logo
9:00 pm - 1:45 pm
IAD
-
CNX
29h 45m
2 stops
Multiple Airlines Logo
8:00 pm - 3:40 pm
CNX
-
IAD
30h 40m
2 stops
$1,085Multiple Airlines
Thu, Sep 24 - Wed, Oct 14
Multiple Airlines Logo
9:00 pm - 7:10 pm
IAD
-
CNX
35h 10m
2 stops
Multiple Airlines Logo
4:55 pm - 3:40 pm
CNX
-
IAD
33h 45m
2 stops
$1,086Multiple Airlines
Sun, Nov 1 - Mon, Nov 16
Multiple Airlines Logo
10:40 am - 9:25 am
IAD
-
CNX
34h 45m
2 stops
Multiple Airlines Logo
9:05 pm - 3:55 pm
CNX
-
IAD
30h 50m
2 stops
$1,103Multiple Airlines
Sun, Sep 6 - Fri, Sep 18
Multiple Airlines Logo
9:00 pm - 11:15 am
IAD
-
CNX
27h 15m
2 stops
Multiple Airlines Logo
8:00 pm - 3:40 pm
CNX
-
IAD
30h 40m
2 stops
$1,113Multiple Airlines
Sun, Nov 1 - Mon, Nov 16
Multiple Airlines Logo
8:05 pm - 7:00 pm
IAD
-
CNX
34h 55m
2 stops
Multiple Airlines Logo
9:05 pm - 3:55 pm
CNX
-
IAD
30h 50m
2 stops
$1,119Multiple Airlines
Mon, Sep 7 - Fri, Sep 18
Multiple Airlines Logo
9:00 pm - 9:20 am
IAD
-
CNX
25h 20m
2 stops
Multiple Airlines Logo
2:35 pm - 3:40 pm
CNX
-
IAD
36h 05m
2 stops
$1,124Multiple Airlines
Sat, Oct 3 - Sun, Oct 25
Multiple Airlines Logo
3:10 pm - 11:25 pm
IAD
-
CNX
45h 15m
2 stops
Multiple Airlines Logo
8:50 pm - 10:05 am
CNX
-
IAD
48h 15m
2 stops
$1,127Multiple Airlines
Sun, Sep 6 - Thu, Sep 17
Multiple Airlines Logo
9:00 pm - 1:45 pm
IAD
-
CNX
53h 45m
2 stops
Multiple Airlines Logo
4:55 pm - 8:45 am
CNX
-
IAD
26h 50m
2 stops
$1,128Multiple Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Chiang Mai flights

Get data-powered insights and trends into flights from Dulles Intl to Chiang Mai 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. Dulles Intl Airport to Chiang Mai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Chiang Mai, 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. Dulles Intl Airport to Chiang Mai is April, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $1,696 and $1,443 respectively.

Good to know

Low seasonMay
Cheapest flight$597
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Washington Dulles Airport to Chiang Mai

When to book flights from Dulles Intl to Chiang Mai

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Chiang Mai flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Chiang Mai?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Chiang Mai was $597 for a one-way ticket and $1,027 for a round-trip.

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

    Yes, you’ll need a passport to travel to Chiang Mai from Washington Dulles Airport.

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

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Chiang Mai is Chiang Mai.

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

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

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

    Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Chiang Mai, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Chiang Mai, EVA Air or Korean Air?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chiang Mai are EVA Air and Korean Air. With an average price for the route of $1,292 and an overall rating of 8.5, EVA Air is the most popular choice. Korean Air is also a great choice for the route, with an average price of $1,420 and an overall rating of 8.4.

  • How does KAYAK find such low prices on flights from Washington Dulles 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 Washington Dulles Airport to Chiang Mai.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles 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 Washington Dulles 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 Washington Dulles 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 Washington Dulles Airport with another airline. Booking your flights between Washington Dulles 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 Washington Dulles 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 Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Dulles Intl 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 Dulles Intl 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.
8.5
EVA AirOverall score based on 1470 reviews
8.4Boarding
8.3Comfort
8.0Entertainment
8.7Crew
8.1Food
Airline reviews

Great food on both legs and fast customer service from the stewardesses....

10.0 ExcellentTony, Jun 2026
LAX - CRK
Read more EVA Air reviews

Great food on both legs and fast customer service from the stewardesses....

The food was great; the attendants were pleasant. Waiting to onboard felt stressful, as passengers who had connecting flights at SEA had to be verified again for two things before getting a real boarding pass: passport and carry-on luggage weight. The boarding pass issued by another airline (i.e., the first leg of my trip) did not count. The S terminal at SEA was barren, with lots of sensory overloads because every airline was repeatedly broadcasting long lists of names of passengers who had not gone through that verification process. The carry-on luggage weight check seemed futile to me. I saw a woman who opened her over-weight suitcase to move some items into her shoulder bag. She still boarded with two huge bags with her. I assume this check is an endeavor of ensuring fairness of the overhead bin space or optimizing fuel efficiency when gas price is through the roof, but I don't know if either goal is achieved. Nonetheless I respect the crew's dedication to the SOP.

Food tasted like the meat had freezer burn. Another thing all of our 4 check baggage was left somewhere and my oral medication for my diabetes was left in one of the lost luggage..most of the flight attendants did not know how to communicate in English.. the trip was a total nightmare

I put the review all together for the first review

The crew need to be more friendly it seem everything such a rush situation during dinner and breakfast. Smiles to the passenger go such a long way just the service from Seattle to Taipei, service from Taipei to Bangkok were great more pleasant the flight attendant from Thailand she was very nice, as far as entertainment were amazing , wiffi connection was incredible great, I will be able to charged my phone from Seattle to Taipei and from taipei to Bangkok I won’t be able to do so flight attendant told me that because I don’t have the original iPhone charger connection has nothing to do what type of charger I have so she said there is nothing she can do about it. Foods : from Seattle to Taipei were ok no flavor , from Taipei to Bangkok I have chicken teriyaki the rice is overcooked all the flavor stuck on the aluminum wraps , breakfast the congee was on point and delicious. Will I recommend anyone to fly with Eva air go for it so you can experience yourself for myself I won’t fly with them again I’m gonna stick with Singapore airlines instead.

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Never went. Got rescheduled with Phillipine Airlines to Bali, which was fine.

I am really satisfied with Eva Air and will definitely fly with them again.

Again on this leg the WiFi wouldn't work. The seats were comfortable with adequate cushion and space between seats for my legs. Very nice 3-hour flight.

The flight from SEA to Taipei was on a Boeing 787-10. Economy seats were unacceptably cramped and the seats themselves were old and lacking cushion. I'm only 5'3" and couldn't cross my legs as my knees were up against the seat in front of me! I could not get WiFi to work most of the time on both flights and crew were invisible except to serve meals. The onboard entertainment also did not work reliably and was very hard to hear through the provided earbuds. The Asian vegetarian meals were interesting. I hope they can provide a fully vegan option though these meals seemed to be already. I appreciate their providing these meals options for vegans. I don't think I'll fly a 787-10 if I can help it. It was the definition of a sardine can in Economy.

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

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

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Everything you need to know for your flight from Dulles Intl to Chiang Mai

Information on your arrival and departure airports