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Cheap flights from Chiang Mai to Washington, D.C. Reagan-National Airport from ฿19,669

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — DCA
15 Apr — 22 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Reagan-National

Enter your travel dates to find the best prices.

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 16 March 2026.

Wed 19/811:35
CNX
-
DCA
2 stops43h 25m
EVA Air
Fri 18/909:59
DCA
-
CNX
2 stops37h 26m
EVA Air
Deal found 12/3฿34,663
Wed 19/811:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Sat 19/918:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 12/3฿35,953
Thu 30/411:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Thu 7/518:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 16/3฿36,888
Wed 19/811:20
CNX
-
DCA
3 stops38h 30m
Multiple Airlines
Fri 18/909:30
DCA
-
CNX
2 stops37h 50m
Multiple Airlines
Deal found 15/3฿43,659
Tue 18/817:20
CNX
-
DCA
2 stops37h 40m
Multiple Airlines
Thu 17/909:59
DCA
-
CNX
2 stops43h 21m
Multiple Airlines
Deal found 12/3฿46,303
Thu 20/817:20
CNX
-
DCA
2 stops37h 40m
Multiple Airlines
Thu 17/909:59
DCA
-
CNX
2 stops43h 21m
Multiple Airlines
Deal found 12/3฿50,011
Tue 18/809:30
CNX
-
DCA
2 stops45h 29m
เอทิฮัดแอร์เวย์
Fri 18/910:45
DCA
-
CNX
2 stops32h 40m
เอทิฮัดแอร์เวย์
Deal found 12/3฿89,640
Sun 16/809:30
CNX
-
DCA
2 stops45h 29m
เอทิฮัดแอร์เวย์
Fri 18/910:45
DCA
-
CNX
2 stops32h 40m
เอทิฮัดแอร์เวย์
Deal found 12/3฿90,124
Sat 22/814:55
CNX
-
DCA
2 stops38h 16m
China Eastern
Wed 16/911:00
DCA
-
CNX
2 stops39h 25m
China Eastern
Deal found 12/3฿109,406

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 16 March 2026.

Round-trip from

฿34,663

One-way from

฿19,669
EVA Air
  • EVA Air
  • 19/8-18/9
  • 4 total stops
  • 80h 51m total
  • Chiang Mai to Washington, D.C.
Search Deals
11/5
  • 11/5
  • 2 total stops
  • 43h 40m total
  • Chiang Mai to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise 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 17,341 searches. Data last updated 16 March 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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 30/4

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Thu 7/5

18:59-10:25

2 stops28h 26m

฿36,888

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:20-14:50

3 stops38h 30m

Washington, D.C. Reagan-National

Fri 18/9

09:30-10:20

2 stops37h 50m

฿43,659

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

17:20-20:00

2 stops37h 40m

Washington, D.C. Reagan-National

Thu 17/9

09:59-16:20

2 stops43h 21m

฿46,303

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

09:30-17:46

2 stops43h 16m

Washington, D.C. Reagan-National

Wed 16/9

10:45-06:25

2 stops32h 40m

฿89,640

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 20/8

09:30-17:46

2 stops43h 16m

Washington, D.C. Reagan-National

Tue 15/9

10:45-06:25

2 stops32h 40m

฿89,640

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 20/8

09:30-19:59

2 stops45h 29m

Washington, D.C. Reagan-National

Fri 18/9

10:45-06:25

2 stops32h 40m

฿89,640

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 16/8

09:30-19:59

2 stops45h 29m

Washington, D.C. Reagan-National

Wed 16/9

10:45-06:25

2 stops32h 40m

฿90,124

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 16/8

09:30-19:59

2 stops45h 29m

Washington, D.C. Reagan-National

Thu 17/9

10:45-06:25

2 stops32h 40m

฿90,124

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 15/4

11:20-17:41

2 stops41h 21m

Washington, D.C. Reagan-National

Fri 8/5

09:59-10:20

2 stops37h 21m

฿213,878
Fastest return journey

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 15/4

11:35-08:53

2 stops32h 18m

Washington, D.C. Reagan-National

Sat 9/5

18:55-10:25

2 stops28h 30m

฿305,034

Flights are sorted by cheapest return flights first.

Deals found on 12/3

Showing 1-10 of 18 resultsSorted by cheapest first
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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 return 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?

    Most people fly from Chiang Mai (CNX) if they book a flight from Chiang Mai to Washington, D.C. Reagan-National. On average, Chiang Mai has 0 outbound flights to Washington, D.C. Reagan-National per day from 0 airlines. Chiang Mai is conveniently located just 3.1 km from Chiang Mai’s city centre.

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

    For as low as ฿89,640, เอทิฮัดแอร์เวย์ can have you in Washington, D.C. Reagan-National Airport from Chiang Mai in 43h 16m. The distance between Chiang Mai and Washington, D.C. Reagan-National Airport is about 13584 km.

  • 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 holiday 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

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Alternative routes for Chiang Mai to Reagan-National

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Fly with Cheapflights

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How does Cheapflights help users find flights from Chiang Mai to Reagan-National?

Deals for Chiang Mai to Reagan-National flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Reagan-National?

Millions of users choose and trust Cheapflights to book the best flight deals from Chiang Mai to Reagan-National for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Chiang Mai to Reagan-National with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Chiang Mai to Reagan-National, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Chiang Mai to Reagan-National become cheaper?

Not ready to book yet? You can track prices for flights from Chiang Mai to Reagan-National on Cheapflights with our Price Alert feature and get notified when better prices are available.

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