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Cheap flights from Chiang Mai to Washington, D.C. Reagan-National Airport from ฿20,616

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — DCA
30 May — 6 Jun1
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 30 April 2026.

Wed 19/811:20
CNX
-
DCA
2 stops41h 39m
China Airlines
Tue 15/917:00
DCA
-
CNX
2 stops30h 20m
China Airlines
Deal found 26/4฿43,160
Tue 18/811:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Wed 16/918:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 26/4฿43,813
Wed 19/811:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Mon 14/909:30
DCA
-
CNX
2 stops37h 55m
Multiple Airlines
Deal found 26/4฿43,977
Tue 18/811:35
CNX
-
DCA
2 stops43h 25m
EVA Air
Fri 18/909:30
DCA
-
CNX
2 stops37h 55m
EVA Air
Deal found 25/4฿44,401
Thu 20/817:20
CNX
-
DCA
2 stops37h 40m
Multiple Airlines
Tue 15/909:30
DCA
-
CNX
2 stops43h 50m
Multiple Airlines
Deal found 26/4฿51,981
Thu 22/1021:45
CNX
-
DCA
2 stops30h 12m
Korean Air
Mon 26/1017:00
DCA
-
CNX
2 stops42h 55m
Korean Air
Deal found 28/4฿54,138
Thu 3/921:45
CNX
-
DCA
2 stops35h 36m
Korean Air
Mon 7/907:00
DCA
-
CNX
2 stops26h 45m
Korean Air
Deal found 24/4฿56,359
Wed 1/711:20
CNX
-
DCA
2 stops41h 39m
Multiple Airlines
Wed 29/718:59
DCA
-
CNX
2 stops28h 21m
Multiple Airlines
Deal found 26/4฿94,030

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 30 April 2026.

Round-trip from

฿43,160

One-way from

฿20,616
China Airlines
  • China Airlines
  • 19/8-15/9
  • 4 total stops
  • 71h 59m total
  • Chiang Mai to Washington, D.C.
Search Deals
8/9
  • 8/9
  • 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 30 April 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

Wed 19/8

11:20-17:59

2 stops41h 39m

Washington, D.C. Reagan-National

Tue 15/9

17:00-10:20

2 stops30h 20m

฿43,160

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Mon 14/9

18:59-10:25

2 stops28h 26m

฿43,813

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Fri 18/9

09:30-10:25

2 stops37h 55m

฿43,977

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Mon 14/9

09:30-10:25

2 stops37h 55m

฿43,977

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Fri 18/9

09:30-10:25

2 stops37h 55m

฿44,401

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 22/10

21:45-16:57

2 stops30h 12m

Washington, D.C. Reagan-National

Mon 26/10

17:00-22:55

2 stops42h 55m

฿54,138
Fastest return journey

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 3/9

21:45-22:21

2 stops35h 36m

Washington, D.C. Reagan-National

Mon 7/9

07:00-20:45

2 stops26h 45m

฿56,359

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 1/7

11:20-17:59

2 stops41h 39m

Washington, D.C. Reagan-National

Wed 29/7

16:55-10:20

3 stops30h 25m

฿101,643
Cheapest one-way

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 8/9

11:20-20:00

2 stops43h 40m

฿20,616

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:20-17:59

2 stops41h 39m

฿28,033

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 12 resultsSorted by cheapest first
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 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 ฿43,160, China Airlines can have you in Washington, D.C. Reagan-National Airport from Chiang Mai in 41h 39m. The distance between Chiang Mai and Washington, D.C. Reagan-National Airport is about 13584 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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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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.

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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?

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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