IAD - CNX

$468 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 1/23. 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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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, Dec 1 - Sun, Dec 7
Multiple Airlines Logo
8:05 pm - 10:20 pmIAD-CNX
38h 15m2 stops
Multiple Airlines Logo
10:50 pm - 3:55 pmCNX-IAD
53h 05m2 stops
$993Multiple Airlines
Find Deal
Fri, Jan 23 - Sun, Feb 22
Multiple Airlines Logo
8:05 pm - 9:40 pmIAD-CNX
37h 35m2 stops
Multiple Airlines Logo
2:30 pm - 3:55 pmCNX-IAD
37h 25m2 stops
$1,019Multiple Airlines
Find Deal
Sun, Mar 1 - Wed, Mar 11
Qatar Airways Logo
8:05 pm - 11:20 amIAD-CNX
51h 15m2 stops
Qatar Airways Logo
7:45 pm - 4:55 pmCNX-IAD
32h 10m2 stops
$1,037Qatar Airways
Find Deal
Sun, Mar 1 - Tue, Mar 10
Korean Air Logo
12:30 pm - 10:55 pmIAD-CNX
46h 25m2 stops
Korean Air Logo
12:15 am - 7:12 pmCNX-IAD
29h 57m2 stops
$1,039Korean Air
Find Deal
Sun, Mar 1 - Tue, Mar 10
Korean Air Logo
11:50 am - 10:55 pmIAD-CNX
23h 05m1 stop
Korean Air Logo
12:15 am - 7:12 pmCNX-IAD
29h 57m2 stops
$1,068Korean Air
Find Deal
Sun, Mar 8 - Tue, Mar 10
Delta Logo
7:00 am - 10:55 pmIAD-CNX
28h 55m2 stops
Delta Logo
12:15 am - 9:11 amCNX-IAD
43h 56m2 stops
$1,118Delta
Find Deal
Tue, Dec 2 - Mon, Dec 8
Delta Logo
7:15 am - 10:55 pmIAD-CNX
27h 40m2 stops
Delta Logo
12:15 am - 7:19 pmCNX-IAD
31h 04m2 stops
$1,128Delta
Find Deal
Sun, Feb 15 - Mon, Mar 23
Etihad Airways Logo
2:35 pm - 6:05 amIAD-CNX
27h 30m1 stop
Etihad Airways Logo
8:50 am - 10:05 amCNX-IAD
36h 15m1 stop
$1,222Etihad Airways
Find Deal
Fri, Mar 20 - Fri, Apr 3
Qatar Airways Logo
9:05 pm - 1:45 pmIAD-CNX
29h 40m2 stops
Qatar Airways Logo
8:00 pm - 8:40 amCNX-IAD
47h 40m2 stops
$1,246Qatar Airways
Find Deal
Sun, Feb 15 - Mon, Mar 23
Etihad Airways Logo
2:35 pm - 11:20 amIAD-CNX
32h 45m2 stops
Etihad Airways Logo
8:50 am - 10:05 amCNX-IAD
36h 15m1 stop
$1,315Etihad Airways
Find Deal

Everything you should know

Top airlines
Qatar Airways
Cheapest • from $1,037 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$993
Multiple Airlines
Mon 12/1Sun 12/7
IAD - CNX • 2 stops
Cheapest one-way
$471
Multiple Airlines
Fri 1/23
IAD - 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 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’s the cheapest day of the week to fly from Washington Dulles Airport to Chiang Mai?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Chiang Mai clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Chiang Mai on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Washington Dulles Airport to Chiang Mai. For your return ticket, we recommend flying on a Monday and avoiding Tuesdays for the best deals.

Good to know

Low seasonAugust
Cheapest flight$471
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 3% 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 $471 for a one-way ticket and $993 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?

    SkyTeam is the only airline alliance operating flights between Washington Dulles Airport and Chiang Mai.

  • 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 $1,693 and an overall rating of 8.4, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,143 and an overall rating of 7.9.

  • 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 airlines flying 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
Korean AirOverall score based on 1155 reviews
8.7Crew
8.5Boarding
8.3Comfort
8.1Food
8.2Entertainment
Airline reviews

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

10.0 ExcellentAnonymous, Oct 2025IAD - ICN
Read more Korean Air reviews

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.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

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

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