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Chiang Mai

$524+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — CNX
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find 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 October 28, 2025.

This Korean Air deal was found by Cheapflights users on 10/28. 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.
Wed 11/266:59 amDCA - CNX
2 stops27h 56mKorean Air
Fri 12/512:15 amCNX - DCA
2 stops24h 36mKorean Air
Deal found 10/28$1,203
This Delta deal was found by Cheapflights users on 10/28. 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.
Fri 11/77:59 amDCA - CNX
2 stops26h 56mDelta
Thu 11/2012:15 amCNX - DCA
2 stops27h 44mDelta
Deal found 10/28$1,263
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 11/62:26 pmDCA - CNX
2 stops44h 29mDelta
Mon 11/1712:15 amCNX - DCA
2 stops34h 55mDelta
Deal found 10/28$1,353
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 11/62:26 pmDCA - CNX
2 stops44h 29mDelta
Tue 11/1112:15 amCNX - DCA
2 stops35h 26mDelta
Deal found 10/28$1,378
This Trip.com deal was found by Cheapflights users on 10/28. 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 10/299:59 amDCA - CNX
2 stops49h 16mMultiple Airlines
Wed 11/58:40 amCNX - DCA
2 stops47h 20mMultiple Airlines
Deal found 10/28$1,390
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 11/62:26 pmDCA - CNX
2 stops44h 29mDelta
Sat 11/1512:15 amCNX - DCA
2 stops35h 16mDelta
Deal found 10/28$1,393
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 11/62:26 pmDCA - CNX
2 stops44h 29mDelta
Fri 11/1412:15 amCNX - DCA
2 stops51h 10mDelta
Deal found 10/28$1,404
This KAYAK deal was found by Cheapflights users on 10/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:59 amDCA - CNX
2 stops36h 36mMultiple Airlines
Mon 12/1511:50 amCNX - DCA
2 stops40h 18mMultiple Airlines
Deal found 10/27$1,417
This Delta deal was found by Cheapflights users on 10/28. 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.
Fri 10/317:45 amDCA - CNX
2 stops28h 10mDelta
Tue 11/1112:15 amCNX - DCA
2 stops34h 26mDelta
Deal found 10/28$1,448
This IEagle deal was found by Cheapflights users on 10/26. 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.
Wed 11/266:46 pmDCA - CNX
2 stops51h 49mMultiple Airlines
Sat 12/611:50 amCNX - DCA
2 stops42h 09mMultiple Airlines
Deal found 10/26$1,452
This Delta deal was found by Cheapflights users on 10/26. 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.
Mon 12/16:00 amDCA - CNX
2 stops28h 55mDelta
Sun 12/712:15 amCNX - DCA
2 stops26h 45mDelta
Deal found 10/26$1,458

Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,139
(Delta)

One-way from

$524
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$1,263
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. 13% potential increase in price ($227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($89 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 28, 2025.
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

Reagan-National

Fly to

Chiang Mai

Route

Depart

Return

Price

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Thu 3/5

5:10 pm-10:55 pm

2 stops41h 45m

Chiang Mai

Sun 3/8

12:15 am-3:32 pm

2 stops50h 17m

$1,139

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 11/26

6:59 am-10:55 pm

2 stops27h 56m

Chiang Mai

Fri 12/5

12:15 am-12:51 pm

2 stops24h 36m

$1,203

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Fri 11/7

7:59 am-10:55 pm

2 stops26h 56m

Chiang Mai

Thu 11/20

12:15 am-3:59 pm

2 stops27h 44m

$1,263

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Fri 2/20

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Thu 3/5

12:15 am-1:25 pm

2 stops25h 10m

$1,263

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 1/12

6:59 am-10:55 pm

2 stops27h 56m

Chiang Mai

Tue 3/17

12:15 am-7:15 pm

2 stops30h 00m

$1,277

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 12/8

9:59 am-10:35 am

2 stops36h 36m

Chiang Mai

Mon 12/15

11:50 am-4:08 pm

2 stops40h 18m

$1,417

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 11/26

6:46 pm-10:35 am

2 stops51h 49m

Chiang Mai

Sat 12/6

11:50 am-5:59 pm

2 stops42h 09m

$1,452

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 12/1

6:00 am-10:55 pm

2 stops28h 55m

Chiang Mai

Sun 12/7

12:15 am-3:00 pm

2 stops26h 45m

$1,458

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 12/7

6:00 pm-5:50 pm

3 stops59h 50m

$544

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 1/6

8:00 am-10:25 am

3 stops38h 25m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 15 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-Chiang Mai flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 October 28, 2025.
Peruse reviews from past customers who have flown with Delta from Washington, D.C. Reagan-National Airport to Chiang Mai to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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. 1 airline 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 27h 56m. Fly via Delta or Korean Air to get the fastest option. There are 8441 mi between Washington, D.C. Reagan-National Airport and Chiang Mai. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Reagan-National to Chiang Mai

Discover the top airline that operate flights from Reagan-National 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,068Average$1,128FlexibilityNo cancel feeOn-timeN/A

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