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Chiang Mai

$542+ Cheap flights from Dulles Intl (IAD) to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CNX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Dulles Intl to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$924
(oojo)

One-way from

$542
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,372
From Washington, D.C. Dulles Intl to Chiang Mai
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One-way flight from Washington, D.C. Dulles Intl to Chiang Mai
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Highest demand for flights based on searches. 12% potential increase in price ($221 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Chiang Mai

Cheapest flights from Dulles Intl to Chiang Mai
Explore the most affordable flight options available from Dulles Intl to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This oojo deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:00 pmIAD - CNX
1 stop35h 50mAir China
Mon 12/111:05 pmCNX - IAD
1 stop31h 25mAir China
Deal found 9/11$924
This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:15 pmIAD - CNX
2 stops36h 00mMultiple Airlines
Thu 9/1811:55 amCNX - IAD
2 stops33h 10mMultiple Airlines
Deal found 9/10$962
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:10 pmIAD - CNX
2 stops26h 45mMultiple Airlines
Sun 11/210:50 pmCNX - IAD
2 stops29h 00mMultiple Airlines
Deal found 9/10$976
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:05 pmIAD - CNX
2 stops31h 45mMultiple Airlines
Sat 10/1111:30 pmCNX - IAD
2 stops51h 40mMultiple Airlines
Deal found 9/9$985
This oojo deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/129:00 pmIAD - CNX
2 stops25h 20mMultiple Airlines
Sun 10/199:10 pmCNX - IAD
2 stops53h 30mMultiple Airlines
Deal found 9/10$1,054
This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:00 pmIAD - CNX
2 stops25h 20mMultiple Airlines
Sat 10/119:10 pmCNX - IAD
2 stops29h 30mMultiple Airlines
Deal found 9/10$1,057
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/97:43 amIAD - CNX
2 stops38h 42mChina Airlines
Sun 11/1611:25 amCNX - IAD
2 stops30h 58mChina Airlines
Deal found 9/9$1,094
This SmartFares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:00 pmIAD - CNX
2 stops25h 25mMultiple Airlines
Sat 11/19:25 amCNX - IAD
2 stops34h 55mMultiple Airlines
Deal found 9/9$1,111
This oojo deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:43 amIAD - CNX
2 stops38h 42mChina Airlines
Mon 12/15:35 pmCNX - IAD
2 stops24h 43mChina Airlines
Deal found 9/10$1,141
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:00 pmIAD - CNX
1 stop35h 50mMultiple Airlines
Mon 12/17:45 pmCNX - IAD
2 stops34h 45mMultiple Airlines
Deal found 9/10$1,159

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Chiang Mai that are best for you.

Fly from

Dulles Intl

Fly to

Chiang Mai

Route

Depart

Return

Price

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/26

10:10 pm-11:55 am

2 stops26h 45m

Chiang Mai

Sun 11/2

10:50 pm-3:50 pm

2 stops29h 00m

$976

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/12

9:00 pm-9:20 am

2 stops25h 20m

Chiang Mai

Sun 10/19

9:10 pm-3:40 pm

2 stops53h 30m

$1,054

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/9

7:43 am-10:25 am

2 stops38h 42m

Chiang Mai

Sun 11/16

11:25 am-6:23 am

2 stops30h 58m

$1,094

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 11/10

7:43 am-10:25 am

2 stops38h 42m

Chiang Mai

Mon 12/1

5:35 pm-6:18 am

2 stops24h 43m

$1,141

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 11/11

9:10 pm-6:05 am

1 stop20h 55m

Chiang Mai

Mon 12/1

8:50 am-3:50 pm

1 stop43h 00m

$1,166

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 11/11

6:13 pm-10:35 am

2 stops28h 22m

Chiang Mai

Mon 12/1

11:50 am-6:18 am

2 stops30h 28m

$1,201

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 9/15

12:15 pm-9:20 am

2 stops34h 05m

Chiang Mai

Sat 10/11

8:00 pm-7:45 pm

3 stops34h 45m

$1,203

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/26

7:35 pm-10:55 pm

2 stops40h 20m

Chiang Mai

Sat 11/1

12:15 am-3:36 pm

2 stops26h 21m

$1,254

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sat 10/25

9:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

Fri 10/31

12:15 am-11:20 pm

2 stops34h 05m

$1,264

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 11/4

11:05 am-1:25 pm

2 stops38h 20m

Chiang Mai

Sat 11/8

8:50 am-3:50 pm

1 stop43h 00m

$1,271

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 results
1
2

Best time to book a flight from Dulles Intl to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Chiang Mai

What is the cheapest time of day to fly from IAD to CNX?

Find hourly flight availability from Dulles Intl to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Chiang Mai, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the afternoon.

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Korean Air and Delta from Washington, D.C. Dulles Intl Airport to Chiang Mai by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,960 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Chiang Mai from Washington, D.C. Dulles Intl?

    Chiang Mai (CNX) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Chiang Mai. You should not have trouble finding flights to Chiang Mai from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Chiang Mai airport from Washington, D.C. Dulles Intl. It is only a 1.9 mi journey from Chiang Mai (CNX) to Chiang Mai’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Chiang Mai?

    China Airlines can get you from Washington, D.C. Dulles Intl Airport to Chiang Mai in just under 38h 42m. Your travel time can differ by up to . Airlines will cover a distance of 8436 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Chiang Mai round-trip?

    Korean Air, at $743, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Chiang Mai. An alternate airline flying to your destination would be Delta. These flights start at 51% lower than the current average price 3 months from now.

  • Can I find deals for flights from Dulles Intl to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Chiang Mai.

  • Can I find deals for business class flights from Dulles Intl to Chiang Mai?

    Yes. Cheapflights offers flight deals from Dulles Intl to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Chiang Mai?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Chiang Mai (average of $977). Flying from Washington, D.C. Dulles Intl Airport to Chiang Mai in June is currently the most expensive (average of $1,562). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Dulles Intl to Chiang Mai

Discover the top 2 airlines that operate flights from Dulles Intl to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$743Average$1,729FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,028Average$1,143FlexibilityNo cancel feeOn-timeN/A

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