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Cheap flights from Washington, D.C. to Chiang Mai from $447

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 2/13. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
3:35 pm - 11:20 amIAD-CNX
32h 45m2 stops
Etihad Airways Logo
8:50 am - 9:45 amCNX-IAD
35h 55m1 stop
$915Etihad Airways
Find Deal
Fri, Mar 13 - Sat, Mar 28
Air China Logo
11:00 pm - 9:50 pmIAD-CNX
35h 50m1 stop
Air China Logo
11:05 pm - 7:30 pmCNX-IAD
31h 25m1 stop
$921Air China
Find Deal
Fri, Mar 27 - Mon, Apr 6
Etihad Airways Logo
3:35 pm - 11:20 amIAD-CNX
32h 45m2 stops
Etihad Airways Logo
8:50 am - 9:45 amCNX-IAD
35h 55m1 stop
$929Etihad Airways
Find Deal
Fri, Mar 13 - Sat, Mar 28
Multiple Airlines Logo
12:15 pm - 9:20 amIAD-CNX
34h 05m2 stops
Multiple Airlines Logo
4:55 pm - 10:05 amCNX-IAD
28h 10m2 stops
$940Multiple Airlines
Find Deal
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
8:05 pm - 1:20 pmIAD-CNX
29h 15m2 stops
Multiple Airlines Logo
10:10 am - 4:55 pmCNX-IAD
41h 45m2 stops
$1,040Multiple Airlines
Find Deal
Sun, Feb 15 - Mon, Mar 23
Etihad Airways Logo
3:35 pm - 9:20 amIAD-CNX
30h 45m2 stops
Etihad Airways Logo
8:45 am - 9:45 amCNX-IAD
36h 00m1 stop
$1,050Etihad Airways
Find Deal
Fri, Mar 27 - Sat, Apr 4
Qatar Airways Logo
8:05 pm - 9:25 amIAD-CNX
49h 20m2 stops
Qatar Airways Logo
7:45 pm - 4:55 pmCNX-IAD
32h 10m2 stops
$1,055Qatar Airways
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Sun, Mar 1 - Wed, Mar 11
Korean Air Logo
7:51 pm - 10:55 pmIAD-CNX
39h 04m2 stops
Korean Air Logo
12:15 am - 7:19 pmCNX-IAD
30h 04m2 stops
$1,064Korean Air
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Sun, Mar 1 - Tue, Mar 10
Korean Air Logo
11:50 am - 10:55 pmIAD-CNX
23h 05m1 stop
Korean Air Logo
12:15 am - 9:50 amCNX-IAD
21h 35m1 stop
$1,082Korean Air
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Fri, Jan 23 - Sun, Feb 22
Delta Logo
10:05 pm - 10:55 pmDCA-CNX
36h 50m2 stops
Delta Logo
12:15 am - 7:32 pmCNX-DCA
31h 17m2 stops
$1,712Delta
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Thu, Jan 15 - Wed, Jan 21

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
Mar 16
IAD6:27 pmWashington, D.C. Dulles Intl
29h 08m
2 stops
CNX10:35 amChiang Mai
Apr 16
CNX11:35 amChiang Mai
29h 14m
2 stops
IAD5:49 amWashington, D.C. Dulles Intl
$1,096
Find similar
EVA Air
May 5
BWI7:00 amBaltimore/Washington
40h 25m
2 stops
CNX10:25 amChiang Mai
May 17
CNX11:35 amChiang Mai
29h 54m
2 stops
BWI6:29 amBaltimore/Washington
$1,245
Find similar
EVA Air
Mar 20
IAD7:01 pmWashington, D.C. Dulles Intl
28h 34m
2 stops
CNX10:35 amChiang Mai
Apr 3
CNX11:35 amChiang Mai
29h 14m
2 stops
IAD5:49 amWashington, D.C. Dulles Intl
$1,296
Find similar

Etihad Airways flights from Washington, D.C. to Chiang Mai

Our best Etihad Airways deals on Washington, D.C. to Chiang Mai flight tickets
Etihad Airways
Mar 13
IAD3:35 pmWashington, D.C. Dulles Intl
32h 45m
2 stops
CNX11:20 amChiang Mai
Mar 28
CNX8:50 amChiang Mai
35h 55m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$915
Find similar
Etihad Airways
Mar 13
IAD3:35 pmWashington, D.C. Dulles Intl
32h 45m
2 stops
CNX11:20 amChiang Mai
Mar 28
CNX8:50 amChiang Mai
35h 55m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$929
Find similar
Etihad Airways
Mar 27
IAD3:35 pmWashington, D.C. Dulles Intl
30h 45m
2 stops
CNX9:20 amChiang Mai
Apr 4
CNX8:45 amChiang Mai
36h 00m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$1,050
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 November 25, 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

Fri 3/13

3:35 pm-11:20 am

2 stops32h 45m

Chiang Mai

Sat 3/28

8:50 am-9:45 am

1 stop35h 55m

$915

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 3/27

11:00 pm-9:50 pm

1 stop35h 50m

Chiang Mai

Mon 4/6

11:05 pm-7:30 pm

1 stop31h 25m

$921

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 3/13

3:35 pm-11:20 am

2 stops32h 45m

Chiang Mai

Sat 3/28

8:50 am-9:45 am

1 stop35h 55m

$929

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 5/5

12:15 pm-9:20 am

2 stops34h 05m

Chiang Mai

Tue 5/12

4:55 pm-10:05 am

2 stops28h 10m

$940

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 2/15

8:05 pm-1:20 pm

2 stops29h 15m

Chiang Mai

Mon 3/23

10:10 am-4:55 pm

2 stops41h 45m

$1,040

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 3/27

3:35 pm-9:20 am

2 stops30h 45m

Chiang Mai

Sat 4/4

8:45 am-9:45 am

1 stop36h 00m

$1,050

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/1

8:05 pm-9:25 am

2 stops49h 20m

Chiang Mai

Wed 3/11

7:45 pm-4:55 pm

2 stops32h 10m

$1,055

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/1

7:51 pm-10:55 pm

2 stops39h 04m

Chiang Mai

Tue 3/10

12:15 am-7:19 pm

2 stops30h 04m

$1,064

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 1/23

11:50 am-10:55 pm

1 stop23h 05m

Chiang Mai

Sun 2/22

12:15 am-9:50 am

1 stop21h 35m

$1,082

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Thu 1/15

10:05 pm-10:55 pm

2 stops36h 50m

Chiang Mai

Wed 1/21

12:15 am-7:32 pm

2 stops31h 17m

$1,712

Flights are sorted by cheapest round-trip flights 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 cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in January, then you should wait until June to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $1,187.

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 12% 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

Fastest flight time

25h 20m

Direct flights

None
The fastest flight from Washington, D.C. to Chiang Mai takes 25h 20m
There are no direct flights from Washington, D.C. to Chiang Mai. There are no popular flight routes from Washington, D.C. to Chiang Mai.
Search flight deals

  • 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 23h 05m 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 $743Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
DeltaPriceFrom $798Free CancellationRating
7.9
7,999 reviews
Search Delta 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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