IAD - CNX

$561 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 5/3. 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, 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
$1,083
Typical prices: $1,299-$1,044
Etihad Airways
Thu 10/22Fri 10/30
IAD - CNX • 2 stops
Cheapest one-way
$606
Qatar Airways
Sun 5/3
IAD - CNX • 2 stops
Top airlines
Cheapest • from $1,083 (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 13m (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

Thu, Oct 22 - Fri, Oct 30
Etihad Airways Logo
3:10 pm - 11:20 am
IAD
-
CNX
57h 10m
2 stops
Etihad Airways Logo
8:50 am - 10:05 am
CNX
-
IAD
36h 15m
1 stop
$1,083Etihad Airways
Sun, May 10 - Sat, May 16
Multiple Airlines Logo
3:10 pm - 11:25 pm
IAD
-
CNX
45h 15m
2 stops
Multiple Airlines Logo
10:30 pm - 9:45 am
CNX
-
IAD
46h 15m
2 stops
$1,103Multiple Airlines
Thu, Oct 15 - Mon, Oct 26
Multiple Airlines Logo
9:00 pm - 5:55 pm
IAD
-
CNX
33h 55m
2 stops
Multiple Airlines Logo
5:20 pm - 4:55 pm
CNX
-
IAD
34h 35m
2 stops
$1,117Multiple Airlines
Tue, Sep 1 - Fri, Sep 11
Multiple Airlines Logo
9:00 pm - 7:10 pm
IAD
-
CNX
35h 10m
2 stops
Multiple Airlines Logo
2:35 pm - 3:40 pm
CNX
-
IAD
36h 05m
2 stops
$1,125Multiple Airlines
Thu, Sep 24 - Wed, Oct 14
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
$1,130Multiple Airlines
Mon, Oct 26 - Mon, Nov 9
Multiple Airlines Logo
8:05 pm - 11:30 am
IAD
-
CNX
28h 25m
2 stops
Multiple Airlines Logo
9:05 pm - 3:55 pm
CNX
-
IAD
30h 50m
2 stops
$1,131Multiple Airlines
Mon, Aug 10 - Wed, Sep 9
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
$1,132Multiple Airlines
Sun, Aug 30 - Mon, Sep 7
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
$1,135Multiple Airlines
Mon, Aug 10 - Wed, Sep 9
Multiple Airlines Logo
9:00 pm - 11:15 am
IAD
-
CNX
27h 15m
2 stops
Multiple Airlines Logo
2:35 pm - 3:40 pm
CNX
-
IAD
36h 05m
2 stops
$1,136Multiple Airlines
Thu, Oct 22 - Fri, Oct 30
Qatar Airways Logo
9:00 pm - 9:25 am
IAD
-
CNX
49h 25m
2 stops
Qatar Airways Logo
12:10 pm - 4:55 pm
CNX
-
IAD
39h 45m
2 stops
$1,161Qatar Airways
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 March and January, where the average cost of round-trip tickets is $1,443 and $1,440 respectively.

Good to know

Low seasonMay
Cheapest flight$606
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 13% 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 $606 for a one-way ticket and $1,083 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 $1,296 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 $1,412 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 1433 reviews
8.4Boarding
8.0Entertainment
8.1Food
8.6Crew
8.3Comfort
Airline reviews

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.

6.0 GoodBrandon, Apr 2026
HKT - BKK
Read more EVA Air reviews

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.

My luggage was lost and didnt arrive in manila yesterday. And until now im still waiting for the confirmation if my luggage is teady for pick up in terminal 1

I always preferred EVA air every time I visit Philippines. It’s just this time that I have to be very early to make sure that I don’t miss my flight due to TSA problem. There’s only one choice of food serve which you use to have 2 on our flight from Taiwan to Philippines . Otherwise I will still use EVA air in my future flight.

Service was great. Flight schedule was on time. Staffs are friendly.

Overall was good but it would be good if the airline is providing snack such as sandwich or instant noodle between meals for LA to Taipei

Amazing customer service. BUT!! It would be nice if the flight attendants SMILE a little more, I know they are doing their job, but it is importantly to smile back and be warm to passengers. Nobody is trying to hit on them, it’s just being polite. So, please Taiwanese flight attendants: SMILE MORE WHEN YOU INTERACT WITH PAYING CUSTOMERS

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

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

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

Information on your arrival and departure airports