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Cheap flights from Chiang Mai to Washington, D.C. from $862

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 6/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Chiang Mai to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
9:45 pm - 8:35 pm
CNX
-
DCA
33h 50m
2 stops
Korean Air Logo
10:00 am - 8:45 pm
DCA
-
CNX
47h 45m
2 stops
$1,710Korean Air
Thu, Sep 10 - Sun, Sep 13
Korean Air Logo
9:45 pm - 8:35 pm
CNX
-
DCA
33h 50m
2 stops
Korean Air Logo
10:00 am - 8:45 pm
DCA
-
CNX
47h 45m
2 stops
$1,718Korean Air
Thu, Sep 10 - Sun, Sep 13

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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 10
CNX9:45 pmChiang Mai
33h 50m
2 stops
DCA8:35 pmWashington, D.C. Reagan-National
Sep 13
DCA10:00 amWashington, D.C. Reagan-National
47h 45m
2 stops
CNX8:45 pmChiang Mai
$1,710
Korean Air
Sep 10
CNX9:45 pmChiang Mai
33h 50m
2 stops
DCA8:35 pmWashington, D.C. Reagan-National
Sep 13
DCA10:00 amWashington, D.C. Reagan-National
47h 45m
2 stops
CNX8:45 pmChiang Mai
$1,718

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 June 19, 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 round-trip
Quickest round-trip

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 9/10

9:45 pm-8:35 pm

2 stops33h 50m

Washington, D.C. Reagan-National

Sun 9/13

10:00 am-8:45 pm

2 stops47h 45m

$1,710

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 9/10

9:45 pm-8:35 pm

2 stops33h 50m

Washington, D.C. Reagan-National

Sun 9/13

10:00 am-8:45 pm

2 stops47h 45m

$1,718
Cheapest one-way

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Fri 6/26

7:25 pm-12:57 pm

3 stops52h 32m

$862

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 6/28

6:50 am-4:16 pm

3 stops44h 26m

$887

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Fri 7/17

11:30 am-10:31 pm

3 stops46h 01m

$901

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 6/28

10:20 pm-11:14 pm

3 stops35h 54m

$933

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 8/11

11:35 am-8:00 pm

2 stops43h 25m

$998

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sun 11/29

10:50 pm-4:08 pm

3 stops53h 18m

$1,002
Quickest one-way

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sat 11/28

12:15 am-7:14 pm

2 stops30h 59m

$1,077

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Sat 6/27

12:50 am-4:16 pm

2 stops50h 26m

$1,093

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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?

Delta is the most popular carrier 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

Fastest flight time

33h 50m

Direct flights

None
The fastest flight from Chiang Mai to Washington, D.C. Reagan-National Airport takes 33h 50m
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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Frequently asked questions about flying from Chiang Mai to Washington, D.C. Reagan-National Airport

  • 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 33h 50m.

  • 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
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Fredericksburg
Gaithersburg
Colonial Beach
Rockville
Linthicum Heights
Silver Spring
Towson
Manassas
Tysons
Springfield
Bethesda
Fairfax
College Park

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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