$426+ Cheap flights from Dulles Intl (IAD) to Chiang Mai (CNX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CNX
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Chiang Mai with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Chiang Mai
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Best
Last-minute
One-way
Cheapest flights from Dulles Intl to Chiang MaiExplore 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 10, 2026.
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 10, 2026.
This Rumbo deal was found by Cheapflights users on 9/8. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:30 pm -
2 stops46h 15m
Tue 11/109:10 am -
1 stop35h 55m
Deal found 9/8![Multiple Airlines logo]()
$880
This Korean Air deal was found by Cheapflights users on 9/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:50 am -
1 stop22h 55m
Mon 11/1612:20 am -
2 stops23h 17m
Deal found 9/7![Korean Air logo]()
$951
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 am -
1 stop22h 55m
Sun 11/1512:20 am -
2 stops27h 39m
Deal found 9/9![Delta logo]()
$968
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:05 pm -
2 stops27h 15m
Mon 11/169:10 am -
1 stop35h 55m
Deal found 9/9![Multiple Airlines logo]()
$970
This Gotogate deal was found by Cheapflights users on 9/7. 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 10/2211:05 am -
2 stops36h 15m
Thu 10/299:10 am -
1 stop35h 55m
Deal found 9/7![Multiple Airlines logo]()
$971
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:00 am -
2 stops29h 45m
Sun 11/1512:20 am -
2 stops27h 39m
Deal found 9/9![Delta logo]()
$973
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:10 pm -
2 stops41h 50m
Thu 12/249:10 am -
1 stop35h 55m
Deal found 9/5![Multiple Airlines logo]()
$1,010
Best flights from Dulles Intl to Chiang MaiDiscover carefully curated flight deals from Dulles Intl to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Dulles Intl to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 am -
1 stop22h 55m
Sun 11/1512:20 am -
2 stops27h 39m
Deal found 9/9![Delta logo]()
$968
This Air Canada deal was found by Cheapflights users on 9/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:29 am -
2 stops26h 31m
Tue 10/611:00 pm -
2 stops50h 57m
Deal found 9/4![Multiple Airlines logo]()
$1,077
This Korean Air 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:15 pm -
1 stop44h 30m
Wed 10/149:45 pm -
1 stop24h 20m
Deal found 9/9![Korean Air logo]()
$2,118
Last-minute flights from Dulles Intl to Chiang MaiDiscover last-minute flight deals from Dulles Intl to Chiang Mai. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Chiang Mai. Data last updated September 10, 2026 and is based on user searches.
This IEagle deal was found by Cheapflights users on 9/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:00 pm -
2 stops27h 15m
Tue 9/228:00 pm -
2 stops30h 40m
Deal found 9/8![Multiple Airlines logo]()
$1,084
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:10 pm -
2 stops41h 50m
Thu 12/249:10 am -
1 stop35h 55m
Deal found 9/5![Multiple Airlines logo]()
$1,010
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:00 pm -
2 stops27h 15m
Wed 10/142:35 pm -
2 stops36h 05m
Deal found 9/9![Multiple Airlines logo]()
$1,086
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:00 pm -
2 stops35h 10m
Fri 10/92:35 pm -
2 stops36h 05m
Deal found 9/8![Multiple Airlines logo]()
$1,115
This Gotogate deal was found by Cheapflights users on 9/5. 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.
Tue 10/209:00 pm -
2 stops35h 10m
Tue 10/279:10 am -
1 stop35h 55m
Deal found 9/5![Multiple Airlines logo]()
$1,039
This Gotogate deal was found by Cheapflights users on 9/7. 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 10/2211:05 am -
2 stops36h 15m
Thu 10/299:10 am -
1 stop35h 55m
Deal found 9/7![Multiple Airlines logo]()
$971
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:00 pm -
2 stops49h 00m
Fri 10/309:10 am -
1 stop35h 55m
Deal found 9/7![Multiple Airlines logo]()
$1,092
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:05 pm -
2 stops27h 15m
Mon 11/169:10 am -
1 stop35h 55m
Deal found 9/9![Multiple Airlines logo]()
$970
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:00 am -
2 stops29h 45m
Sun 11/1512:20 am -
2 stops27h 39m
Deal found 9/9![Delta logo]()
$973
One-way flights from Dulles Intl to Chiang MaiSearch for one-way flight options from Dulles Intl to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Dulles Intl to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:30 pm -
2 stops46h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Korean Air logo]()
$426
This Korean Air deal was found by Cheapflights users on 9/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:50 am -
1 stop22h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Korean Air logo]()
$495
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/259:00 pm -
2 stops27h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$567
This Korean Air deal was found by Cheapflights users on 9/6. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:50 am -
1 stop22h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Korean Air logo]()
$617
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:55 pm -
1 stop22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![EVA Air logo]()
$669
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:35 pm -
3 stops28h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$743
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:10 pm -
3 stops47h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$756
This Malaysia Airlines deal was found by Cheapflights users on 9/7. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:05 pm -
3 stops34h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$1,500
Find 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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $880 (Rumbo) |
One-way from | $426 (eDestinos) |
Popular in | June |
Cheapest in | May |
Average price | $1,285 |
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 7,457,451 searches. Data last updated September 10, 2026.
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
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Tue 11/10
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$495
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Fri 9/25
9:00 pm-11:15 am
2 stops27h 15m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$567
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Fri 12/4
6:00 am-10:45 pm
2 stops28h 45m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$622
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Wed 11/4
2:35 pm-7:20 am
3 stops28h 45m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$743
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Sun 11/1
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Sun 11/15
12:20 am-3:59 pm
2 stops27h 39m
$968
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Wed 9/16
8:29 am-10:00 pm
2 stops26h 31m
Chiang Mai
Tue 10/6
11:00 pm-2:57 pm
2 stops50h 57m
$1,077
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Thu 9/24
1:15 pm-8:45 pm
1 stop44h 30m
Chiang Mai
Wed 10/14
9:45 pm-11:05 am
1 stop24h 20m
$2,118
Sorted by cheapest first
Compare providers for flights from Dulles Intl to Chiang Mai
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Chiang Mai in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Chiang Mai flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
IAD-CNX
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.
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 10, 2026.
Get a feel of what it's like to fly with EVA Air,Korean Air, andDelta 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.
Boarding
8.5
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Boarding
8.5
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Boarding
8.5
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Boarding
8.5
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
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.
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Other flights to Chiang Mai
Explore flights to Chiang Mai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Dulles Intl to Chiang Mai by cabin class
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Dulles Intl and Chiang Mai flights
Browse other Dulles Intl and Chiang Mai flight options. Last updated on September 10, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Dulles Intl to Chiang Mai
Discover the top 3 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$754 | Average$1,318 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$798 | Average$1,383 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,040 | Average$1,296 | FlexibilityNo cancel fee | On-time74% |