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IAD - CNX

$1,149 Find cheap flights from Washington Dulles Airport to Chiang Mai

This is the cheapest round-trip 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 9/8. 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
0 bags
Sat 6/29
Sat 7/6

Search 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
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Dulles Intl to Chiang Mai (IAD-CNX)

 
These are the cheapest deals for flights from Dulles Intl to Chiang Mai currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to Chiang Mai

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Chiang Mai.

Recent one-way flight deals from Dulles Intl to Chiang Mai

Only flying one-way? Below are some of the best one-way flight deals from Dulles Intl to Chiang Mai found on KAYAK recently.

Recent last minute flight deals from Dulles Intl to Chiang Mai

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Dulles Intl to Chiang Mai.

Recent direct flight deals from Dulles Intl to Chiang Mai

The latest deals for direct flights from Dulles Intl to Chiang Mai so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Dulles Intl to Chiang Mai

Find recent round-trip train or bus tickets from Dulles Intl to Chiang Mai.

All round-trip flight deals to Chiang Mai

The cheapest plane tickets to Chiang Mai found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
2:35 pm - 8:45 amCNX-IAD
29h 10m2 stops
$1,149
Find Deal
Sun, Sep 8 - Sun, Sep 22
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
8:00 pm - 8:45 amCNX-IAD
47h 45m2 stops
$1,164
Find Deal
Tue, Sep 3 - Tue, Sep 10
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
8:00 pm - 4:10 pmCNX-IAD
31h 10m2 stops
$1,226Qatar Airways
Find Deal
Thu, Sep 5 - Tue, Sep 24
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
8:00 pm - 4:10 pmCNX-IAD
31h 10m2 stops
$1,251Qatar Airways
Find Deal
Fri, Sep 6 - Mon, Sep 23
6:15 pm - 11:45 pmIAD-CNX
42h 30m2 stops
12:45 am - 5:47 amCNX-IAD
40h 02m2 stops
$1,601Asiana Airlines
Find Deal
Wed, Aug 14 - Sun, Aug 25
11:50 am - 10:05 pmIAD-CNX
22h 15m1 stop
11:15 pm - 9:50 amCNX-IAD
22h 35m1 stop
$1,640Korean Air
Find Deal
Tue, Nov 5 - Mon, Nov 11
1:25 pm - 8:40 pmIAD-CNX
44h 15m1 stop
11:15 pm - 11:15 amCNX-IAD
23h 00m1 stop
$1,649Korean Air
Find Deal
Sun, Sep 8 - Sun, Sep 22
7:05 am - 9:55 pmIAD-CNX
27h 50m2 stops
11:15 pm - 9:40 pmCNX-IAD
33h 25m2 stops
$1,692Delta
Find Deal
Wed, Jul 3 - Mon, Jul 15
6:30 am - 11:45 pmIAD-CNX
30h 15m2 stops
12:45 am - 5:23 amCNX-IAD
39h 38m2 stops
$1,696Asiana Airlines
Find Deal
Tue, Jul 2 - Tue, Jul 16
1:25 pm - 8:40 pmIAD-CNX
44h 15m1 stop
11:15 pm - 11:15 amCNX-IAD
23h 00m1 stop
$1,700Delta
Find Deal
Mon, Sep 9 - Mon, Sep 23
4:40 pm - 9:20 amIAD-CNX
29h 40m2 stops
2:35 pm - 2:45 pmCNX-IAD
35h 10m2 stops
$1,761
Find Deal
Sun, Jun 2 - Sun, Jun 23
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
8:00 pm - 4:10 pmCNX-IAD
31h 10m2 stops
$1,795Qatar Airways
Find Deal
Sat, Jun 1 - Mon, Jun 24
10:55 am - 9:20 amIAD-CNX
35h 25m2 stops
8:00 pm - 8:45 amCNX-IAD
47h 45m2 stops
$1,842Qatar Airways
Find Deal
Sun, Jun 2 - Tue, Jul 2
9:05 pm - 9:20 amIAD-CNX
25h 15m2 stops
8:00 pm - 4:10 pmCNX-IAD
31h 10m2 stops
$1,855Qatar Airways
Find Deal
Tue, Jun 4 - Mon, Jun 24
9:05 pm - 11:15 amIAD-CNX
27h 10m2 stops
8:00 pm - 4:10 pmCNX-IAD
55h 10m2 stops
$1,860Qatar Airways
Find Deal
Tue, Jun 4 - Tue, Jun 25
10:55 am - 9:20 amIAD-CNX
35h 25m2 stops
10:10 am - 8:40 amCNX-IAD
33h 30m2 stops
$2,022Emirates
Find Deal
Mon, Jun 3 - Thu, Jun 20
10:55 am - 9:20 amIAD-CNX
35h 25m2 stops
10:10 am - 8:40 amCNX-IAD
33h 30m2 stops
$2,072Emirates
Find Deal
Fri, May 31 - Thu, Jun 20
6:18 am - 8:40 pmIAD-CNX
27h 22m2 stops
11:15 pm - 11:15 amCNX-IAD
23h 00m1 stop
$5,541Korean Air
Find Deal
Mon, Jun 3 - Sat, Jun 22
1:25 pm - 8:45 pmIAD-CNX
44h 20m1 stop
11:15 pm - 5:27 pmCNX-IAD
29h 12m2 stops
$5,757Korean Air
Find Deal
Fri, May 31 - Wed, Jun 26
1:25 pm - 8:40 pmIAD-CNX
44h 15m1 stop
11:15 pm - 11:15 amCNX-IAD
23h 00m1 stop
$8,795Delta
Find Deal
Sun, Jun 2 - Tue, Jul 2

Flights from Dulles Intl to Chiang Mai - Travel Insights & Trends

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 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 September, where tickets cost $1,280 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,968 and $1,915 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Chiang Mai?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Dulles Intl Airport to Chiang Mai, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Chiang Mai, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 74 days before departure.

Good to know

Low season

August

High season

November

Cheapest flight

$1,149
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly and prices are also 10% lower on average.
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 $1,149 for a round-trip ticket.

  • 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?

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

  • What is the most popular layover when flying to Chiang Mai from Washington Dulles Airport?

    Incheon is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Chiang Mai.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chiang Mai are Korean Air and Delta. With an average price for the route of $1,435 and an overall rating of 8.5, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,308 and an overall rating of 8.0.

  • 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.

See more FAQs

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
Korean AirOverall score based on 1150 reviews
8.6Boarding
8.2Entertainment
8.1Food
8.8Crew
8.3Comfort
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

On time and flight crew are always so happy to help and always smiling unlike other airlines.

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

It was ok. Not good and not a bad experience

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Besides the flight cancellation, everything else was prefect. Kudos to Malaysian Airlines.

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

Qatar airways from Doha to guangzhau was excellent big bird Boeing 777 more room and smoothly flight, I Love it

It was good no problems made it on time for the next flight overseas!

The made us waiting and held our passports and boarding pass making us miss our flights

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Last minute flights from Dulles Intl to Chiang Mai

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Chiang Mai that are departing in the next 10 days.
6/2Sun
multi-stop
29h 40mIAD-CNX
6/23Sun
multi-stop
35h 10mCNX-IAD
$1,761
6/1Sat
multi-stopQatar Airways
25h 15mIAD-CNX
6/24Mon
multi-stopQatar Airways
31h 10mCNX-IAD
$1,795
6/2Sun
multi-stopQatar Airways
35h 25mIAD-CNX
7/2Tue
multi-stopQatar Airways
47h 45mCNX-IAD
$1,842
6/4Tue
multi-stopQatar Airways
25h 15mIAD-CNX
6/24Mon
multi-stopQatar Airways
31h 10mCNX-IAD
$1,855
6/4Tue
multi-stopQatar Airways
27h 10mIAD-CNX
6/25Tue
multi-stopQatar Airways
55h 10mCNX-IAD
$1,860
6/3Mon
multi-stopEmirates
35h 25mIAD-CNX
6/20Thu
multi-stopEmirates
33h 30mCNX-IAD
$2,022
5/31Fri
multi-stopEmirates
35h 25mIAD-CNX
6/20Thu
multi-stopEmirates
33h 30mCNX-IAD
$2,072
6/3Mon
multi-stopKorean Air
27h 22mIAD-CNX
6/22Sat
multi-stopKorean Air
23h 00mCNX-IAD
$5,541
5/31Fri
multi-stopKorean Air
44h 20mIAD-CNX
6/26Wed
multi-stopKorean Air
29h 12mCNX-IAD
$5,757
6/2Sun
multi-stopDelta
44h 15mIAD-CNX
7/2Tue
multi-stopDelta
23h 00mCNX-IAD
$8,795

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Washington Dulles Airport - Chiang Mai Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Chiang Mai (CNX)Thailand

Return flight deals:

Chiang Mai - Washington Dulles Airport

Cabin classes:

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