IAD - CNX

$529 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 8/31. 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

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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights 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

Tue, Nov 11 - Thu, Nov 20
Air China Logo
10:00 pm - 9:50 pmIAD-CNX
35h 50m1 stop
Air China Logo
11:05 pm - 6:30 pmCNX-IAD
31h 25m1 stop
$847Air China
Find Deal
Fri, Nov 14 - Thu, Nov 20
Air China Logo
10:00 pm - 9:50 pmIAD-CNX
35h 50m1 stop
Air China Logo
11:05 pm - 6:30 pmCNX-IAD
31h 25m1 stop
$852Air China
Find Deal
Wed, Sep 10 - Wed, Sep 17
Logo
12:15 pm - 1:45 pmIAD-CNX
38h 30m2 stops
Logo
10:10 am - 10:05 amCNX-IAD
34h 55m2 stops
$910
Find Deal
Wed, Oct 15 - Mon, Nov 17
Logo
12:15 pm - 9:20 amIAD-CNX
34h 05m2 stops
Logo
10:10 am - 9:10 amCNX-IAD
35h 00m2 stops
$917
Find Deal
Mon, Aug 18 - Wed, Aug 27
Delta Logo
5:25 pm - 9:55 pmIAD-CNX
41h 30m2 stops
Delta Logo
11:15 pm - 5:55 amCNX-IAD
41h 40m2 stops
$1,028Delta
Find Deal
Sun, Aug 17 - Mon, Sep 1
Delta Logo
6:00 am - 9:55 pmIAD-CNX
28h 55m2 stops
Delta Logo
11:15 pm - 11:21 pmCNX-IAD
35h 06m2 stops
$1,068Delta
Find Deal
Sun, Aug 17 - Wed, Aug 27
Korean Air Logo
6:00 am - 9:55 pmIAD-CNX
28h 55m2 stops
Korean Air Logo
11:15 pm - 11:21 pmCNX-IAD
35h 06m2 stops
$1,124Korean Air
Find Deal
Thu, Aug 21 - Mon, Sep 1
Korean Air Logo
7:30 pm - 9:55 pmIAD-CNX
39h 25m2 stops
Korean Air Logo
11:15 pm - 11:21 pmCNX-IAD
35h 06m2 stops
$1,130Korean Air
Find Deal
Sat, Jan 17 - Mon, Feb 16
Etihad Airways Logo
9:10 pm - 6:05 amIAD-CNX
20h 55m1 stop
Etihad Airways Logo
8:50 am - 4:05 pmCNX-IAD
43h 15m1 stop
$1,239Etihad Airways
Find Deal
Sun, Nov 9 - Thu, Nov 20
Etihad Airways Logo
9:10 pm - 6:05 amIAD-CNX
20h 55m1 stop
Etihad Airways Logo
8:50 am - 4:05 pmCNX-IAD
43h 15m1 stop
$1,260Etihad Airways
Find Deal
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.

Find deals

Good to know

Low seasonAugust
Cheapest flight$529
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 6% 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 $529 for a one-way ticket and $847 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, Star Alliance, and oneworld 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.

  • 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 airline 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 1121 reviews
8.2Comfort
8.5Boarding
8.7Crew
8.2Entertainment
8.1Food
Airline reviews

Friendly flight attendants and gate agents. Very clean plane and food was good!

10.0 ExcellentAnonymous, Jul 2025DFW - ICN
Read more Korean Air reviews

Friendly flight attendants and gate agents. Very clean plane and food was good!

Plane took off on time and I had the whole row to myself!

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.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Chiang Mai (CNX)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.