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Reagan-National

$649+ Cheap flights from Chiang Mai (CNX) to Reagan-National (DCA)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — DCA
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Chiang Mai to Reagan-National

Cheapest flights from Chiang Mai to Reagan-National
Explore the most affordable flight options available from Chiang Mai to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Tue 9/89:59 am
DCA
-
CNX
2 stops37h 26m
Multiple Airlines
Deal found 2/19$981
This Trip.com deal was found by Cheapflights users on 2/17. 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.
Tue 6/211:35 am
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Mon 7/276:59 pm
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 2/17$1,122
This Trip.com deal was found by Cheapflights users on 2/17. 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.
Tue 6/211:35 am
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Sat 7/259:59 am
DCA
-
CNX
2 stops37h 26m
Multiple Airlines
Deal found 2/17$1,194
This Trip.com deal was found by Cheapflights users on 2/17. 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.
Tue 6/211:35 am
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Fri 7/246:59 pm
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 2/17$1,198
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:50 am
CNX
-
DCA
2 stops44h 15m
Multiple Airlines
Mon 3/29:59 am
DCA
-
CNX
2 stops60h 36m
Multiple Airlines
Deal found 2/20$1,226
This Delta deal was found by Cheapflights users on 2/20. 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.
Wed 2/2512:15 am
CNX
-
DCA
2 stops34h 42m
Delta
Mon 3/26:59 pm
DCA
-
CNX
2 stops39h 56m
Delta
Deal found 2/20$1,229
This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:35 am
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Tue 8/186:59 pm
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 2/19$1,260
This Delta deal was found by Cheapflights users on 2/18. 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.
Tue 3/1712:15 am
CNX
-
DCA
2 stops27h 45m
Delta
Wed 3/258:45 pm
DCA
-
CNX
2 stops39h 10m
Delta
Deal found 2/18$1,367
This Delta deal was found by Cheapflights users on 2/20. 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.
Wed 2/2512:15 am
CNX
-
DCA
2 stops23h 47m
Delta
Fri 3/278:40 am
DCA
-
CNX
2 stops27h 15m
Delta
Deal found 2/20$1,397
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/111:35 am
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Mon 8/316:59 pm
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 2/20$1,460
This Trip.com deal was found by Cheapflights users on 2/17. 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.
Tue 3/312:15 am
CNX
-
DCA
2 stops25h 35m
Korean Air
Wed 3/118:40 am
DCA
-
CNX
2 stops27h 15m
Korean Air
Deal found 2/17$1,482

Find flight deals from Chiang Mai to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Reagan-National (DCA). 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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,122
(Trip.com)

One-way from

$649
(Delta)
Provider with most accurate pricing for Chiang Mai-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chiang Mai-Washington, D.C. (WAS) flights.
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From Chiang Mai to Washington, D.C. Reagan-National
Search Deals
One-way flight from Chiang Mai to Washington, D.C. Reagan-National
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Chiang Mai to Reagan-National 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 February 21, 2026.
Use the filters below to find and compare flights from Chiang Mai to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Chiang Mai

Fly to

Reagan-National

Route

Depart

Return

Price

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 6/2

11:35 am-5:59 pm

2 stops41h 24m

Washington, D.C. Reagan-National

Mon 7/27

6:59 pm-10:25 am

2 stops28h 26m

$1,122

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 6/2

11:35 am-5:59 pm

2 stops41h 24m

Washington, D.C. Reagan-National

Sat 7/25

9:59 am-10:25 am

2 stops37h 26m

$1,194

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 6/2

11:35 am-5:59 pm

2 stops41h 24m

Washington, D.C. Reagan-National

Fri 7/24

6:59 pm-10:25 am

2 stops28h 26m

$1,198

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 8/4

11:35 am-5:59 pm

2 stops41h 24m

Washington, D.C. Reagan-National

Tue 8/18

6:59 pm-10:25 am

2 stops28h 26m

$1,260

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 3/17

12:15 am-5:00 pm

2 stops27h 45m

Washington, D.C. Reagan-National

Wed 3/25

8:45 pm-10:55 pm

2 stops39h 10m

$1,367

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 4/1

11:35 am-8:00 pm

2 stops43h 25m

Washington, D.C. Reagan-National

Mon 8/31

6:59 pm-10:25 am

2 stops28h 26m

$1,460

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 3/3

12:15 am-1:50 pm

2 stops25h 35m

Washington, D.C. Reagan-National

Wed 3/11

8:40 am-10:55 pm

2 stops27h 15m

$1,482

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 3/19

12:15 am-11:35 pm

2 stops34h 20m

Washington, D.C. Reagan-National

Fri 3/27

10:10 am-10:55 pm

2 stops25h 45m

$1,606

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 4/5

11:35 am-8:00 pm

2 stops43h 25m

Washington, D.C. Reagan-National

Sun 4/12

9:59 am-10:25 am

2 stops37h 26m

$1,932

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sat 3/21

11:50 am-8:00 pm

2 stops43h 10m

Washington, D.C. Reagan-National

Sat 3/28

6:41 pm-10:25 am

2 stops28h 44m

$2,483

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 20 results
1
2

Best time to book a flight from Chiang Mai to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Chiang Mai 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 Chiang Mai to Reagan-National. 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 from for flights from Chiang Mai to Washington, D.C. Reagan-National?

    Located just 1.9 mi from the city center, Chiang Mai is the airport most travelers will use when flying to Washington, D.C. Reagan-National from Chiang Mai. Booking flights from Chiang Mai (CNX) to Washington, D.C. Reagan-National should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Reagan-National from 0 different airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chiang Mai to Reagan-National 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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Manassas
Bowie
Largo
McLean
Clinton
Towson

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Alternative routes for Chiang Mai to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
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