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Cheap flights from Chiang Mai to Washington, D.C. from $629

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chiang Mai to Washington, D.C. departing on 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chiang Mai to Washington, D.C.

Cheap round-trip flights

Logo
11:20 am - 8:59 pmCNX-DCA
44h 39m2 stops
Logo
5:00 pm - 10:25 amDCA-CNX
29h 25m2 stops
$1,052
Find Deal
Wed, Sep 3 - Tue, Dec 9
Logo
11:20 am - 5:59 pmCNX-DCA
41h 39m2 stops
Logo
5:00 pm - 10:25 amDCA-CNX
29h 25m2 stops
$1,090
Find Deal
Wed, Sep 3 - Tue, Dec 9
Logo
11:20 am - 8:59 pmCNX-DCA
44h 39m2 stops
Logo
8:59 am - 10:20 amDCA-CNX
38h 21m2 stops
$1,113
Find Deal
Wed, Sep 3 - Wed, Sep 10
Delta Logo
11:15 pm - 4:33 pmCNX-DCA
28h 18m2 stops
Delta Logo
6:00 am - 11:05 pmDCA-CNX
29h 05m2 stops
$1,220Delta
Find Deal
Wed, Sep 3 - Mon, Dec 8
Delta Logo
11:15 pm - 11:05 amCNX-DCA
46h 50m2 stops
Delta Logo
8:15 pm - 11:05 pmDCA-CNX
38h 50m2 stops
$1,226Delta
Find Deal
Wed, Sep 3 - Sun, Dec 7
Logo
12:45 am - 8:59 pmCNX-DCA
31h 14m2 stops
Logo
5:06 pm - 11:40 pmDCA-CNX
43h 34m2 stops
$1,421
Find Deal
Tue, Sep 2 - Wed, Sep 10
Korean Air Logo
9:45 pm - 5:20 pmCNX-DCA
30h 35m2 stops
Korean Air Logo
6:00 am - 11:05 pmDCA-CNX
29h 05m2 stops
$1,495Korean Air
Find Deal
Thu, Sep 4 - Mon, Dec 8
Korean Air Logo
11:15 pm - 9:48 pmCNX-DCA
33h 33m2 stops
Korean Air Logo
6:05 am - 11:05 pmDCA-CNX
53h 00m2 stops
$1,502Korean Air
Find Deal
Wed, Sep 3 - Wed, Dec 10
Delta Logo
11:15 pm - 10:59 pmCNX-DCA
34h 44m2 stops
Delta Logo
6:05 am - 11:05 pmDCA-CNX
29h 00m2 stops
$1,527Delta
Find Deal
Wed, Sep 3 - Thu, Dec 11
Korean Air Logo
9:45 pm - 5:20 pmCNX-DCA
30h 35m2 stops
Korean Air Logo
6:05 am - 11:05 pmDCA-CNX
53h 00m2 stops
$1,571Korean Air
Find Deal
Thu, Sep 4 - Wed, Dec 10

Delta flights from Chiang Mai to Washington, D.C. Reagan-National Airport

Our best Delta deals on Chiang Mai to Washington, D.C. Reagan-National Airport flight tickets
Delta
Sep 3
CNX11:15 pmChiang Mai
28h 18m
2 stops
DCA4:33 pmWashington, D.C. Reagan-National
Dec 8
DCA6:00 amWashington, D.C. Reagan-National
29h 05m
2 stops
CNX11:05 pmChiang Mai
$1,220
Find similar
Delta
Sep 3
CNX11:15 pmChiang Mai
46h 50m
2 stops
DCA11:05 amWashington, D.C. Reagan-National
Dec 7
DCA8:15 pmWashington, D.C. Reagan-National
38h 50m
2 stops
CNX11:05 pmChiang Mai
$1,226
Find similar
Delta
Sep 3
CNX11:15 pmChiang Mai
34h 44m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
Dec 11
DCA6:05 amWashington, D.C. Reagan-National
29h 00m
2 stops
CNX11:05 pmChiang Mai
$1,527
Find similar

Korean Air flights from Chiang Mai to Washington, D.C. Reagan-National Airport

Our best Korean Air deals on Chiang Mai to Washington, D.C. Reagan-National Airport flight tickets
Korean Air
Sep 4
CNX9:45 pmChiang Mai
30h 35m
2 stops
DCA5:20 pmWashington, D.C. Reagan-National
Dec 8
DCA6:00 amWashington, D.C. Reagan-National
29h 05m
2 stops
CNX11:05 pmChiang Mai
$1,495
Find similar
Korean Air
Sep 3
CNX11:15 pmChiang Mai
33h 33m
2 stops
DCA9:48 pmWashington, D.C. Reagan-National
Dec 10
DCA6:05 amWashington, D.C. Reagan-National
53h 00m
2 stops
CNX11:05 pmChiang Mai
$1,502
Find similar
Korean Air
Sep 4
CNX9:45 pmChiang Mai
30h 35m
2 stops
DCA5:20 pmWashington, D.C. Reagan-National
Dec 10
DCA6:05 amWashington, D.C. Reagan-National
53h 00m
2 stops
CNX11:05 pmChiang Mai
$1,571
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chiang Mai to Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated August 20, 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

Fly to

Route

Depart

Return

Price

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:20 am-8:59 pm

2 stops44h 39m

Washington, D.C. Reagan-National

Tue 12/9

5:00 pm-10:25 am

2 stops29h 25m

$1,052

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:20 am-5:59 pm

2 stops41h 39m

Washington, D.C. Reagan-National

Tue 12/9

5:00 pm-10:25 am

2 stops29h 25m

$1,090

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:20 am-8:59 pm

2 stops44h 39m

Washington, D.C. Reagan-National

Wed 9/10

8:59 am-10:20 am

2 stops38h 21m

$1,113

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:15 pm-4:33 pm

2 stops28h 18m

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-11:05 pm

2 stops29h 05m

$1,220

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:15 pm-11:05 am

2 stops46h 50m

Washington, D.C. Reagan-National

Sun 12/7

8:15 pm-11:05 pm

2 stops38h 50m

$1,226

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 9/2

12:45 am-8:59 pm

2 stops31h 14m

Washington, D.C. Reagan-National

Wed 9/10

5:06 pm-11:40 pm

2 stops43h 34m

$1,421

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 9/4

9:45 pm-5:20 pm

2 stops30h 35m

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-11:05 pm

2 stops29h 05m

$1,495

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:15 pm-9:48 pm

2 stops33h 33m

Washington, D.C. Reagan-National

Wed 12/10

6:05 am-11:05 pm

2 stops53h 00m

$1,502

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:15 pm-10:59 pm

2 stops34h 44m

Washington, D.C. Reagan-National

Thu 12/11

6:05 am-11:05 pm

2 stops29h 00m

$1,527

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 9/4

9:45 pm-5:20 pm

2 stops30h 35m

Washington, D.C. Reagan-National

Wed 12/10

6:05 am-11:05 pm

2 stops53h 00m

$1,571

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Chiang Mai to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Chiang Mai to Washington, D.C. Reagan-National?

China Airlines, Delta, and Korean Air are the most popular carriers operating from Chiang Mai to Washington, D.C. Reagan-National

When to book flights from Chiang Mai to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chiang Mai to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chiang Mai to Washington, D.C. Reagan-National Airport (CNX to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chiang Mai to Washington, D.C. Reagan-National Airport

Direct flights

None
There are no direct flights from Chiang Mai to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Chiang Mai to Washington, D.C. Reagan-National Airport.
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  • How far is Chiang Mai to Washington, D.C. Reagan-National by plane?

    Chiang Mai and Washington, D.C. Reagan-National are 8440.1 mi apart from one another. A reasonable flight in good conditions will take 28h 05m.

  • When did momondo last update prices for flights from Chiang Mai Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from Chiang Mai Airport to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Chiang Mai Airport to Washington, D.C. Reagan-National Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chiang Mai Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Woodbridge
Waldorf
Tysons
Silver Spring
Laurel
Colonial Beach
Fredericksburg
Manassas
Towson
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from Chiang Mai to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Chiang Mai.

Can I find flights from Chiang Mai to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Chiang Mai with this policy.

How can momondo help me find flights from Chiang Mai to Washington, D.C.?

Once you have performed a search for Chiang Mai to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chiang Mai to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chiang Mai to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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