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Cheap flights from Washington, D.C. to Chiang Mai from $492

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Chiang Mai departing on 9/17. 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 Washington, D.C. to Chiang Mai (WAS-CNX)

Cheap round-trip flights

Logo
12:20 pm - 9:25 amIAD-CNX
33h 05m2 stops
Logo
7:45 pm - 9:10 amCNX-IAD
25h 25m2 stops
$917
Find Deal
Mon, Jan 26 - Mon, Feb 9
Logo
12:10 pm - 1:45 pmIAD-CNX
62h 35m2 stops
Logo
7:45 pm - 9:10 amCNX-IAD
25h 25m2 stops
$934
Find Deal
Tue, Oct 28 - Thu, Nov 13
Delta Logo
7:00 am - 11:05 pmIAD-CNX
28h 05m2 stops
Delta Logo
12:15 am - 2:51 pmCNX-IAD
25h 36m2 stops
$1,078Delta
Find Deal
Tue, Feb 10 - Mon, Mar 16
Delta Logo
3:26 pm - 9:55 pmIAD-CNX
43h 29m2 stops
Delta Logo
11:15 pm - 6:01 amCNX-IAD
41h 46m2 stops
$1,083Delta
Find Deal
Mon, Sep 1 - Tue, Sep 30
EVA Air Logo
6:59 pm - 10:25 amDCA-CNX
28h 26m2 stops
EVA Air Logo
11:50 am - 5:58 pmCNX-DCA
42h 08m2 stops
$1,105EVA Air
Find Deal
Tue, Sep 30 - Tue, Nov 4
EVA Air Logo
9:59 am - 10:35 amDCA-CNX
36h 36m2 stops
EVA Air Logo
11:50 am - 5:32 pmCNX-DCA
41h 42m2 stops
$1,133EVA Air
Find Deal
Wed, Nov 19 - Tue, Jan 20
China Airlines Logo
6:25 am - 10:20 amIAD-CNX
40h 55m2 stops
China Airlines Logo
11:20 am - 7:33 amCNX-IAD
31h 13m2 stops
$1,140China Airlines
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Sun, Oct 12 - Sun, Oct 19
Korean Air Logo
11:50 am - 11:05 pmIAD-CNX
23h 15m1 stop
Korean Air Logo
12:15 am - 9:50 amCNX-IAD
21h 35m1 stop
$1,151Korean Air
Find Deal
Sun, Jan 25 - Sun, Feb 22
China Airlines Logo
6:25 am - 10:20 amIAD-CNX
40h 55m2 stops
China Airlines Logo
11:20 am - 7:33 amCNX-IAD
31h 13m2 stops
$1,200China Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Korean Air Logo
8:20 am - 11:05 pmDCA-CNX
26h 45m2 stops
Korean Air Logo
12:15 am - 1:25 pmCNX-DCA
25h 10m2 stops
$1,349Korean Air
Find Deal
Tue, Jan 20 - Thu, Jan 29

EVA Air flights from Washington, D.C. to Chiang Mai

Our best EVA Air deals on Washington, D.C. to Chiang Mai flight tickets
EVA Air
Sep 30
DCA6:59 pmWashington, D.C. Reagan-National
28h 26m
2 stops
CNX10:25 amChiang Mai
Nov 4
CNX11:50 amChiang Mai
42h 08m
2 stops
DCA5:58 pmWashington, D.C. Reagan-National
$1,105
Find similar
EVA Air
Nov 19
DCA9:59 amWashington, D.C. Reagan-National
36h 36m
2 stops
CNX10:35 amChiang Mai
Jan 20
CNX11:50 amChiang Mai
41h 42m
2 stops
DCA5:32 pmWashington, D.C. Reagan-National
$1,133
Find similar
EVA Air
Nov 9
IAD7:43 amWashington, D.C. Dulles Intl
38h 52m
2 stops
CNX10:35 amChiang Mai
Nov 16
CNX11:50 amChiang Mai
30h 33m
2 stops
IAD6:23 amWashington, D.C. Dulles Intl
$1,163
Find similar

China Airlines flights from Washington, D.C. to Chiang Mai

Our best China Airlines deals on Washington, D.C. to Chiang Mai flight tickets
China Airlines
Aug 20
DCA8:59 amWashington, D.C. Reagan-National
38h 21m
2 stops
CNX10:20 amChiang Mai
Aug 30
CNX11:20 amChiang Mai
41h 39m
2 stops
DCA5:59 pmWashington, D.C. Reagan-National
$1,121
Find similar
China Airlines
Aug 20
DCA8:59 amWashington, D.C. Reagan-National
38h 21m
2 stops
CNX10:20 amChiang Mai
Aug 30
CNX11:20 amChiang Mai
41h 39m
2 stops
DCA5:59 pmWashington, D.C. Reagan-National
$1,122
Find similar
China Airlines
Oct 12
IAD6:25 amWashington, D.C. Dulles Intl
40h 55m
2 stops
CNX10:20 amChiang Mai
Oct 19
CNX11:20 amChiang Mai
31h 13m
2 stops
IAD7:33 amWashington, D.C. Dulles Intl
$1,140
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Chiang Mai 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 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 1/26

12:20 pm-9:25 am

2 stops33h 05m

Chiang Mai

Mon 2/9

7:45 pm-9:10 am

2 stops25h 25m

$917

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 10/28

12:10 pm-1:45 pm

2 stops62h 35m

Chiang Mai

Thu 11/13

7:45 pm-9:10 am

2 stops25h 25m

$934

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 2/10

7:00 am-11:05 pm

2 stops28h 05m

Chiang Mai

Mon 3/16

12:15 am-2:51 pm

2 stops25h 36m

$1,078

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 9/1

3:26 pm-9:55 pm

2 stops43h 29m

Chiang Mai

Tue 9/30

11:15 pm-6:01 am

2 stops41h 46m

$1,083

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 9/30

6:59 pm-10:25 am

2 stops28h 26m

Chiang Mai

Tue 11/4

11:50 am-5:58 pm

2 stops42h 08m

$1,105

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 11/19

9:59 am-10:35 am

2 stops36h 36m

Chiang Mai

Tue 1/20

11:50 am-5:32 pm

2 stops41h 42m

$1,133

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/12

6:25 am-10:20 am

2 stops40h 55m

Chiang Mai

Sun 10/19

11:20 am-7:33 am

2 stops31h 13m

$1,140

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 1/25

11:50 am-11:05 pm

1 stop23h 15m

Chiang Mai

Sun 2/22

12:15 am-9:50 am

1 stop21h 35m

$1,151

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/12

6:25 am-10:20 am

2 stops40h 55m

Chiang Mai

Sun 10/19

11:20 am-7:33 am

2 stops31h 13m

$1,200

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 1/20

8:20 am-11:05 pm

2 stops26h 45m

Chiang Mai

Thu 1/29

12:15 am-1:25 pm

2 stops25h 10m

$1,349

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 Chiang Mai from

How to get the cheapest flight ticket from Washington, D.C. to Chiang Mai

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 typical price of a round-trip flight between Washington, D.C. and Chiang Mai?

What is the cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in June, then you should wait until March to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $1,273.

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from Washington, D.C. to Chiang Mai is on a Monday. Travelers who choose to depart for Chiang Mai on a Monday will often find tickets for as low as $1,286. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Chiang Mai for around $1,704.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,300 when looking at flights departing in the evening. Flights to Chiang Mai are more costly in the afternoon, with an average ticket price of $1,718. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Washington, D.C. to Chiang Mai flights?

You could potentially save up to 16% on your flight if you consider stops on a Washington, D.C. to Chiang Mai flight.

When to book flights from Washington, D.C. to Chiang Mai

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

Cheap Washington, D.C. to Chiang Mai (WAS to CNX) flight deals and tips

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

Best Price Found

$492

Fastest flight time

20h 55m

Direct flights

None

Airports in Chiang Mai

1 airport
The best one-way flight to Chiang Mai from Washington, D.C. in the past 72 hours is $492. The best round-trip flight deal from Washington, D.C. to Chiang Mai found on momondo in the last 72 hours is $917.
The fastest flight from Washington, D.C. to Chiang Mai takes 20h 55m
There are no direct flights from Washington, D.C. to Chiang Mai. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Chiang Mai Airport, Baltimore/Washington Airport - Chiang Mai Airport and Washington, D.C. Dulles Intl Airport - Chiang Mai Airport.
There is 1 airport near Chiang Mai: Chiang Mai (CNX)
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  • How far is Washington, D.C. to Chiang Mai by plane?

    Chiang Mai is 8436.4 mi away from Washington, D.C.. Typically, this will take 20h 55m by plane in normal conditions.

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

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

  • How many operators does momondo search for flights from Washington, D.C. to Chiang Mai Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Chiang Mai Airport.

  • What documentation or ID do you need to fly to Chiang Mai Airport?

    The necessary travel and health documents for your Chiang Mai 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.

  • What is the most popular airline from Washington, D.C. to Chiang Mai?

Best airlines flying from Washington, D.C. to Chiang Mai

Compare and see reviews for airlines that fly from Washington, D.C. to Chiang Mai with momondo
Airline
Rating
Free Cancellation
Price
Korean AirPriceFrom $741Free CancellationRating
8.4
1,131 reviews
Search Korean Air flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Chiang Mai. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Chiang Mai flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Chiang Mai.

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

Of course. momondo tracks the price of Washington, D.C. to Chiang Mai 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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