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Cheap flights from Chiang Mai to Washington, D.C. Reagan-National Airport from ฿18,257

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 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — DCA
13 Nov — 20 Nov1
1 adult
1 adult, Economy

Cheap 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 14 October 2025.

Round-trip from

฿33,846

One-way from

฿18,257
5/3-1/5
  • 5/3-1/5
  • 4 total stops
  • 79h 28m total
  • Chiang Mai to Washington, D.C.
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30/1
  • 30/1
  • 2 total stops
  • 44h 35m total
  • Chiang Mai to Washington, D.C.
Search Deals

Find flight deals from Chiang Mai to Reagan-National

Enter your travel dates to find the best prices.

Best flights from Chiang Mai to Reagan-National
Discover carefully curated flight deals from Chiang Mai to Reagan-National that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 October 2025.

Thu 5/311:25CNX - DCA
2 stops42h 07mMultiple Airlines
Fri 1/509:59DCA - CNX
2 stops37h 21mMultiple Airlines
Deal found 12/10฿33,846
Wed 4/311:25CNX - DCA
2 stops42h 07mMultiple Airlines
Fri 1/518:35DCA - CNX
2 stops28h 45mMultiple Airlines
Deal found 12/10฿34,920
Tue 17/200:15CNX - DCA
2 stops30h 01mเดลต้า
Sun 22/219:30DCA - CNX
2 stops39h 25mเดลต้า
Deal found 12/10฿105,802
Tue 17/200:15CNX - DCA
2 stops23h 44mKorean Air
Sun 22/206:05DCA - CNX
2 stops28h 50mKorean Air
Deal found 13/10฿107,820

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 14 October 2025.
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

Thu 5/3

11:25-17:32

2 stops42h 07m

Washington, D.C. Reagan-National

Fri 1/5

09:59-10:20

2 stops37h 21m

฿33,846

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 4/3

11:25-17:32

2 stops42h 07m

Washington, D.C. Reagan-National

Fri 1/5

18:35-10:20

2 stops28h 45m

฿34,920

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 17/2

00:15-18:16

2 stops30h 01m

Washington, D.C. Reagan-National

Sun 22/2

19:30-22:55

2 stops39h 25m

฿105,802

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 17/2

00:15-11:59

2 stops23h 44m

Washington, D.C. Reagan-National

Sun 22/2

06:05-22:55

2 stops28h 50m

฿107,820

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Fri 30/1

11:25-20:00

2 stops44h 35m

฿18,257

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Fri 30/1

11:25-17:56

2 stops42h 31m

฿23,302

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 29/1

00:15-17:27

2 stops29h 12m

฿31,405

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Fri 30/1

12:10-18:58

3 stops42h 48m

฿50,900

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 9/11

00:45-22:35

2 stops33h 50m

฿116,509

Flights are sorted by cheapest return flights first.

Deals found on 11/10

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.

  • 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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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?

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