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Chiang Mai

$625+ Cheap flights from Reagan-National (DCA) 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — CNX
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap flight deals from Reagan-National to Chiang Mai

Cheapest flights from Reagan-National to Chiang Mai
Explore the most affordable flight options available from Reagan-National to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.

This Korean Air deal was found by Cheapflights users on 7/24. 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.
Sat 10/249:10 am
DCA
-
CNX
2 stops26h 45m
Korean Air
Sun 11/112:15 am
CNX
-
DCA
2 stops24h 23m
Korean Air
Deal found 7/24$1,136
This FlightHub deal was found by Cheapflights users on 7/25. 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.
Wed 9/29:30 am
DCA
-
CNX
2 stops37h 55m
Multiple Airlines
Wed 12/211:50 am
CNX
-
DCA
2 stops44h 10m
Multiple Airlines
Deal found 7/25$1,186
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Wed 9/236:59 pm
DCA
-
CNX
2 stops52h 26m
Multiple Airlines
Sun 10/411:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Deal found 7/22$1,193
This Justfly.com deal was found by Cheapflights users on 7/25. 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.
Sun 11/15:00 pm
DCA
-
CNX
2 stops29h 35m
Multiple Airlines
Wed 11/1111:50 am
CNX
-
DCA
2 stops44h 10m
Multiple Airlines
Deal found 7/25$1,202
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Wed 8/196:59 pm
DCA
-
CNX
2 stops52h 26m
Multiple Airlines
Mon 8/3111:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Deal found 7/22$1,249
This China Airlines deal was found by Cheapflights users on 7/24. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:00 am
DCA
-
CNX
2 stops39h 20m
Multiple Airlines
Mon 9/1411:20 am
CNX
-
DCA
2 stops41h 39m
Multiple Airlines
Deal found 7/24$1,256
This FlightHub deal was found by Cheapflights users on 7/22. 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 8/95:00 pm
DCA
-
CNX
2 stops30h 25m
Multiple Airlines
Thu 9/311:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Deal found 7/22$1,262
This LionTravel deal was found by Cheapflights users on 7/25. 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 LionTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:59 pm
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Tue 9/1511:35 am
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Deal found 7/25$1,288
This Expedia deal was found by Cheapflights users on 7/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:30 am
DCA
-
CNX
2 stops37h 50m
Multiple Airlines
Wed 9/2311:20 am
CNX
-
DCA
2 stops43h 40m
Multiple Airlines
Deal found 7/21$1,331
This FlightHub deal was found by Cheapflights users on 7/23. 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.
Sat 8/89:59 am
DCA
-
CNX
2 stops37h 26m
Multiple Airlines
Thu 9/311:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Deal found 7/23$1,334
This FlightHub deal was found by Cheapflights users on 7/21. 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.
Fri 10/99:30 am
DCA
-
CNX
2 stops61h 55m
Multiple Airlines
Sun 10/1811:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Deal found 7/21$1,340

Find flight deals from Reagan-National to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,136
(Korean Air)

One-way from

$625
(SmartFares)

Popular in

May

Cheapest in

January

Average price

$1,195
Provider with most accurate pricing for Washington, D.C. Reagan-National-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Chiang Mai flights.
Search Deals
From Washington, D.C. Reagan-National to Chiang Mai
Search Deals
One-way flight from Washington, D.C. Reagan-National to Chiang Mai
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 July 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 10/24

9:10 am-10:55 pm

2 stops26h 45m

Chiang Mai

Sun 11/1

12:15 am-12:38 pm

2 stops24h 23m

$1,136

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 1/17

9:30 am-10:35 am

2 stops61h 05m

Chiang Mai

Sun 1/31

11:50 am-8:00 pm

2 stops44h 10m

$1,188

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 1/10

5:00 pm-10:55 pm

2 stops41h 55m

Chiang Mai

Wed 1/27

12:15 am-1:50 pm

2 stops25h 35m

$1,246

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 9/7

8:00 am-10:20 am

2 stops39h 20m

Chiang Mai

Mon 9/14

11:20 am-5:59 pm

2 stops41h 39m

$1,256

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 1/3

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Fri 2/12

12:15 am-2:38 pm

2 stops26h 23m

$1,276

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 1/9

5:00 pm-10:55 pm

2 stops41h 55m

Chiang Mai

Wed 1/27

12:15 am-1:50 pm

2 stops25h 35m

$1,286

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Fri 1/8

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Wed 1/27

12:15 am-1:50 pm

2 stops25h 35m

$1,286

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Thu 9/10

9:30 am-10:20 am

2 stops37h 50m

Chiang Mai

Wed 9/23

11:20 am-8:00 pm

2 stops43h 40m

$1,349
Cheapest one-way

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 11/10

9:30 am-10:25 am

2 stops36h 55m

$625

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 8/31

9:30 am-10:25 am

2 stops37h 55m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 16 resultsSorted by cheapest first
1
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Compare providers for flights from Reagan-National 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 Reagan-National to Chiang Mai in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National 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. Reagan-National Airport-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National 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 Reagan-National to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Reagan-National 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.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    Chiang Mai (CNX), located 1.9 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Reagan-National to Chiang Mai. 0 airlines have flights to Chiang Mai from Washington, D.C. Reagan-National on a regular basis. Booking flights from Washington, D.C. Reagan-National to Chiang Mai should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Reagan-National per day.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Chiang Mai?

    There are many flights that can get you from Washington, D.C. Reagan-National Airport to Chiang Mai in 26h 45m. Fly via Korean Air to get the fastest option. There are 8441 mi between Washington, D.C. Reagan-National Airport and Chiang Mai.

  • Can I find deals for flights from Reagan-National to Chiang Mai that include hotel bookings?

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

  • How can I find direct flights from Reagan-National to Chiang Mai?

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

  • Can I find deals for business class flights from Reagan-National to Chiang Mai?

    Yes. Cheapflights offers flight deals from Reagan-National 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.

See more FAQs

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