IAD - CNX

$502 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 10/20. 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
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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

Mon, Jul 7 - Tue, Jul 22
Logo
12:15 pm - 9:20 amIAD-CNX
34h 05m2 stops
Logo
11:55 am - 10:05 amCNX-IAD
33h 10m2 stops
$928
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Mon, Sep 1 - Tue, Sep 30
Logo
12:25 pm - 9:20 amIAD-CNX
33h 55m2 stops
Logo
3:30 pm - 10:05 amCNX-IAD
29h 35m2 stops
$932
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Mon, Aug 11 - Mon, Aug 25
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
$946Korean Air
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Wed, Aug 13 - Sat, Aug 30
China Airlines Logo
7:59 pm - 10:20 amIAD-CNX
27h 21m2 stops
China Airlines Logo
11:20 am - 5:09 pmCNX-IAD
40h 49m2 stops
$1,098China Airlines
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Sun, Jul 6 - Sun, Jul 13
Korean Air Logo
6:20 am - 9:55 pmIAD-CNX
28h 35m2 stops
Korean Air Logo
11:15 pm - 12:34 amCNX-IAD
36h 19m2 stops
$1,104Korean Air
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Mon, Aug 18 - Sun, Aug 31
China Airlines Logo
7:59 pm - 10:20 amIAD-CNX
27h 21m2 stops
China Airlines Logo
11:20 am - 7:32 amCNX-IAD
31h 12m2 stops
$1,147China Airlines
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Fri, Nov 21 - Fri, Dec 5
Delta Logo
7:00 am - 11:05 pmIAD-CNX
28h 05m2 stops
Delta Logo
12:15 am - 4:31 pmCNX-IAD
28h 16m2 stops
$1,159Delta
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Sun, Oct 12 - Wed, Oct 22
Qatar Airways Logo
9:00 pm - 1:45 pmIAD-CNX
29h 45m2 stops
Qatar Airways Logo
8:00 pm - 3:40 pmCNX-IAD
30h 40m2 stops
$1,205Qatar Airways
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Fri, Nov 21 - Sat, Dec 6
Qatar Airways Logo
8:05 pm - 11:25 amIAD-CNX
27h 20m2 stops
Qatar Airways Logo
7:45 pm - 3:55 pmCNX-IAD
56h 10m2 stops
$1,405Qatar Airways
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Fri, Nov 21 - Fri, Dec 5
Delta Logo
7:00 am - 11:05 pmIAD-CNX
28h 05m2 stops
Delta Logo
12:15 am - 9:50 amCNX-IAD
21h 35m1 stop
$1,424Delta
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Useful Info

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.

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Good to know

Low seasonAugust
High seasonDecember
Cheapest flight$502
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 30% 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 $502 for a one-way ticket and $928 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 Star Alliance 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.

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 1090 reviews
8.7Crew
8.3Comfort
8.1Food
8.5Boarding
8.2Entertainment
Airline reviews

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!

10.0 ExcellentAnonymous, May 2025LAS - ICN
Read more Korean Air reviews

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

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

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.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

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)

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