IAD - CNX

$367 Find Cheap Flights from Washington Dulles 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 Dulles Intl to Chiang Mai departing on 8/26. 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
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Everything you should know

Cheapest round-trip
$904
Etihad Airways
Thu 4/23Thu 4/30
IAD - CNX • 2 stops
Cheapest one-way
$367
Multiple Airlines
Wed 8/26
IAD - CNX • 2 stops
Top airlines
Cheapest • from $904 (round-trip)
Best reviews • 8.4 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 • 21h 39m (one-way)
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 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

Thu, Apr 23 - Thu, Apr 30
Etihad Airways Logo
3:10 pm - 9:20 am
IAD
-
CNX
55h 10m
2 stops
Etihad Airways Logo
9:30 am - 9:45 am
CNX
-
IAD
35h 15m
1 stop
$904Etihad Airways
Fri, Sep 4 - Fri, Sep 25
Etihad Airways Logo
3:10 pm - 11:15 am
IAD
-
CNX
33h 05m
2 stops
Etihad Airways Logo
9:30 am - 9:45 am
CNX
-
IAD
35h 15m
1 stop
$952Etihad Airways
Thu, Apr 2 - Thu, Apr 9
Etihad Airways Logo
3:10 pm - 9:20 am
IAD
-
CNX
55h 10m
2 stops
Etihad Airways Logo
9:30 am - 9:45 am
CNX
-
IAD
35h 15m
1 stop
$973Etihad Airways
Mon, Aug 24 - Wed, Sep 2
EVA Air Logo
1:50 am - 10:25 am
IAD
-
CNX
21h 35m
1 stop
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$1,028EVA Air
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
12:15 pm - 9:20 am
IAD
-
CNX
34h 05m
2 stops
Multiple Airlines Logo
10:10 am - 10:05 am
CNX
-
IAD
34h 55m
2 stops
$1,052Multiple Airlines
Mon, Aug 24 - Thu, Sep 3
Multiple Airlines Logo
5:38 pm - 10:20 am
IAD
-
CNX
29h 42m
2 stops
Multiple Airlines Logo
11:20 am - 7:28 am
CNX
-
IAD
31h 08m
2 stops
$1,061Multiple Airlines
Mon, Aug 24 - Wed, Sep 2
EVA Air Logo
1:50 am - 9:20 am
IAD
-
CNX
44h 30m
2 stops
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$1,066EVA Air
Sat, Aug 22 - Wed, Sep 2
EVA Air Logo
1:50 am - 10:25 am
IAD
-
CNX
21h 35m
1 stop
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$1,067EVA Air
Wed, Sep 2 - Mon, Sep 7
EVA Air Logo
1:15 am - 10:25 am
IAD
-
CNX
22h 10m
1 stop
EVA Air Logo
11:35 am - 10:00 pm
CNX
-
IAD
21h 25m
1 stop
$1,068EVA Air
Mon, Aug 24 - Thu, Sep 3
Multiple Airlines Logo
1:50 am - 10:25 am
IAD
-
CNX
21h 35m
1 stop
Multiple Airlines Logo
11:35 am - 4:26 pm
CNX
-
IAD
39h 51m
2 stops
$1,078Multiple 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.

Which airlines provide the cheapest flights from Washington Dulles 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 Washington Dulles Airport to Chiang Mai were found on Etihad Airways ($904) and EVA Air ($1,028).

Good to know

Low seasonMay
Cheapest flight$367
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 5% 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 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Chiang Mai was $500 for a one-way ticket and $904 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, Korean Air or EVA Air?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chiang Mai are Korean Air and EVA Air. With an average price for the route of $1,420 and an overall rating of 8.4, Korean Air is the most popular choice. EVA Air is also a great choice for the route, with an average price of $1,355 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.
8.4
EVA AirOverall score based on 1372 reviews
8.6Crew
8.1Food
8.4Boarding
8.3Comfort
8.0Entertainment
Airline reviews

It was easy going check in was easy and pretty fast entertainment was up to date on movies and food was ok

8.0 ExcellentAnonymous, Feb 2026
IAH - TPE
Read more EVA Air reviews

It was easy going check in was easy and pretty fast entertainment was up to date on movies and food was ok

Premium Economy seats were more comfortable than other airlines I have recently been on. Great staff. Food was unremarkable.

From checking at the airport to end of flights, attentive and caring personnel, comfortable seating, great food. I plan on using EVA again. Thank you, all.

Very nice, I feel I got good value for the price.

Amazing one of the best airlines i have ever traveled with. I live with medical issues called psoriatic arthritis and was in pain on the flight. The flight crew made sure I had fresh ice pack ever hour. Going above an beyond with service and care ⭐️⭐️⭐️⭐️⭐️.

Certain flight crew member were rude and short with me when I asked questions.

We were very impressed with the modern plane its amenities, as well as the services of flight attendants.

Everything was great, however the seats in the back are very small. Not as Comfortable as I would have liked.

The crew very accommodating and food too is good. Keep up the good work

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

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

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.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

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

Information on your arrival and departure airports