Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Chiang Mai from $501

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 3/9. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:10 pm - 10:20 pmIAD-CNX
37h 10m2 stops
Multiple Airlines Logo
10:50 pm - 3:30 pmCNX-IAD
52h 40m2 stops
$946Multiple Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 25
Multiple Airlines Logo
8:05 pm - 10:10 amIAD-CNX
26h 05m2 stops
Multiple Airlines Logo
7:05 am - 3:55 pmCNX-IAD
44h 50m2 stops
$957Multiple Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 25
Air China Logo
10:00 pm - 9:50 pmIAD-CNX
35h 50m1 stop
Air China Logo
11:05 pm - 6:30 pmCNX-IAD
31h 25m1 stop
$981Air China
Find Deal
Fri, Nov 14 - Mon, Dec 1
Qatar Airways Logo
8:05 pm - 9:25 amIAD-CNX
25h 20m2 stops
Qatar Airways Logo
7:45 pm - 3:55 pmCNX-IAD
32h 10m2 stops
$1,059Qatar Airways
Find Deal
Mon, Nov 17 - Tue, Dec 2
Qatar Airways Logo
10:40 am - 9:25 amIAD-CNX
34h 45m2 stops
Qatar Airways Logo
7:45 pm - 3:55 pmCNX-IAD
32h 10m2 stops
$1,062Qatar Airways
Find Deal
Sun, Nov 16 - Tue, Dec 2
China Airlines Logo
5:01 pm - 10:25 amDCA-CNX
29h 24m2 stops
China Airlines Logo
11:25 am - 8:00 pmCNX-DCA
44h 35m2 stops
$1,068China Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 30
China Airlines Logo
7:43 am - 10:25 amIAD-CNX
38h 42m2 stops
China Airlines Logo
11:25 am - 6:23 amCNX-IAD
30h 58m2 stops
$1,120China Airlines
Find Deal
Sun, Nov 9 - Sun, Nov 16
Korean Air Logo
11:50 am - 10:55 pmIAD-CNX
23h 05m1 stop
Korean Air Logo
12:15 am - 9:22 pmCNX-IAD
33h 07m2 stops
$1,223Korean Air
Find Deal
Sun, Nov 16 - Wed, Nov 26
Korean Air Logo
8:10 am - 10:55 pmBWI-CNX
27h 45m2 stops
Korean Air Logo
12:15 am - 2:47 pmCNX-BWI
25h 32m2 stops
$1,254Korean Air
Find Deal
Mon, Mar 9 - Wed, Mar 11
Air China Logo
5:50 pm - 9:50 pmBWI-CNX
41h 00m2 stops
Air China Logo
11:05 pm - 7:01 amCNX-BWI
42h 56m2 stops
$1,799Air China
Find Deal
Mon, Mar 9 - Thu, Mar 12

Delta flights from Washington, D.C. to Chiang Mai

Our best Delta deals on Washington, D.C. to Chiang Mai flight tickets
Delta
Mar 9
BWI6:19 amBaltimore/Washington
29h 36m
2 stops
CNX10:55 pmChiang Mai
Mar 11
CNX12:15 amChiang Mai
44h 00m
2 stops
BWI9:15 amBaltimore/Washington
$1,079
Find similar
Delta
Nov 10
IAD7:01 amWashington, D.C. Dulles Intl
27h 54m
2 stops
CNX10:55 pmChiang Mai
Nov 24
CNX12:15 amChiang Mai
36h 10m
2 stops
IAD12:25 amWashington, D.C. Dulles Intl
$1,128
Find similar
Delta
Nov 10
IAD7:01 amWashington, D.C. Dulles Intl
27h 54m
2 stops
CNX10:55 pmChiang Mai
Nov 24
CNX12:15 amChiang Mai
36h 10m
2 stops
IAD12:25 amWashington, D.C. Dulles Intl
$1,129
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
Oct 15
IAD10:05 pmWashington, D.C. Dulles Intl
26h 10m
2 stops
CNX11:15 amChiang Mai
Nov 17
CNX8:50 amChiang Mai
42h 40m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$1,086
Find similar
Etihad Airways
Oct 15
IAD10:05 pmWashington, D.C. Dulles Intl
28h 40m
2 stops
CNX1:45 pmChiang Mai
Nov 17
CNX8:50 amChiang Mai
42h 40m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$1,087
Find similar
Etihad Airways
Oct 12
IAD10:05 pmWashington, D.C. Dulles Intl
24h 15m
2 stops
CNX9:20 amChiang Mai
Oct 19
CNX11:55 amChiang Mai
39h 15m
2 stops
IAD4:10 pmWashington, D.C. Dulles Intl
$1,186
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 October 2, 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 11/10

9:10 pm-10:20 pm

2 stops37h 10m

Chiang Mai

Tue 11/25

10:50 pm-3:30 pm

2 stops52h 40m

$946

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/9

8:05 pm-10:10 am

2 stops26h 05m

Chiang Mai

Tue 11/25

7:05 am-3:55 pm

2 stops44h 50m

$957

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 11/14

10:00 pm-9:50 pm

1 stop35h 50m

Chiang Mai

Mon 12/1

11:05 pm-6:30 pm

1 stop31h 25m

$981

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 11/17

8:05 pm-9:25 am

2 stops25h 20m

Chiang Mai

Tue 12/2

7:45 pm-3:55 pm

2 stops32h 10m

$1,059

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/16

10:40 am-9:25 am

2 stops34h 45m

Chiang Mai

Tue 12/2

7:45 pm-3:55 pm

2 stops32h 10m

$1,062

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 1/12

5:01 pm-10:25 am

2 stops29h 24m

Chiang Mai

Fri 1/30

11:25 am-8:00 pm

2 stops44h 35m

$1,068

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/9

7:43 am-10:25 am

2 stops38h 42m

Chiang Mai

Sun 11/16

11:25 am-6:23 am

2 stops30h 58m

$1,120

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/16

11:50 am-10:55 pm

1 stop23h 05m

Chiang Mai

Wed 11/26

12:15 am-9:22 pm

2 stops33h 07m

$1,223

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Mon 3/9

8:10 am-10:55 pm

2 stops27h 45m

Chiang Mai

Wed 3/11

12:15 am-2:47 pm

2 stops25h 32m

$1,254

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Mon 3/9

5:50 pm-9:50 pm

2 stops41h 00m

Chiang Mai

Thu 3/12

11:05 pm-7:01 am

2 stops42h 56m

$1,799

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 June, then you should wait until September to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $1,207.

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 11% 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

Direct flights

None
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 $754Free CancellationRating
8.4
1,145 reviews
Search Korean Air flights
DeltaPriceFrom $798Free CancellationRating
7.9
7,962 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.

An easier way to manage your Chiang Mai trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/1
Sat 11/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand