Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Chiang Mai from $663

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 7/7. 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

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
3:10 pm - 8:25 pm
IAD
-
CNX
42h 15m
2 stops
Multiple Airlines Logo
2:30 pm - 9:45 am
CNX
-
IAD
30h 15m
2 stops
$1,081Multiple Airlines
Wed, Aug 26 - Thu, Sep 10
Multiple Airlines Logo
9:00 pm - 9:20 am
IAD
-
CNX
25h 20m
2 stops
Multiple Airlines Logo
7:45 pm - 3:55 pm
CNX
-
IAD
32h 10m
2 stops
$1,099Multiple Airlines
Tue, Oct 6 - Fri, Dec 18
Multiple Airlines Logo
10:40 am - 9:25 am
IAD
-
CNX
34h 45m
2 stops
Multiple Airlines Logo
9:05 pm - 3:55 pm
CNX
-
IAD
30h 50m
2 stops
$1,103Multiple Airlines
Sun, Nov 1 - Mon, Nov 16
Multiple Airlines Logo
9:00 pm - 1:45 pm
IAD
-
CNX
29h 45m
2 stops
Multiple Airlines Logo
3:30 pm - 3:40 pm
CNX
-
IAD
35h 10m
2 stops
$1,106Multiple Airlines
Sun, Aug 23 - Mon, Sep 21
Multiple Airlines Logo
8:05 pm - 11:20 am
IAD
-
CNX
27h 15m
2 stops
Multiple Airlines Logo
5:05 pm - 3:55 pm
CNX
-
IAD
34h 50m
2 stops
$1,117Multiple Airlines
Sun, Nov 1 - Mon, Nov 16
Multiple Airlines Logo
9:00 pm - 7:10 pm
IAD
-
CNX
35h 10m
2 stops
Multiple Airlines Logo
9:10 pm - 3:40 pm
CNX
-
IAD
29h 30m
2 stops
$1,119Multiple Airlines
Thu, Sep 24 - Wed, Oct 14
Multiple Airlines Logo
9:00 pm - 7:10 pm
IAD
-
CNX
35h 10m
2 stops
Multiple Airlines Logo
3:30 pm - 3:40 pm
CNX
-
IAD
35h 10m
2 stops
$1,120Multiple Airlines
Thu, Sep 24 - Wed, Oct 14
Multiple Airlines Logo
9:00 pm - 7:10 pm
IAD
-
CNX
35h 10m
2 stops
Multiple Airlines Logo
11:55 am - 3:40 pm
CNX
-
IAD
38h 45m
2 stops
$1,158Multiple Airlines
Thu, Sep 24 - Sun, Oct 11
EVA Air Logo
6:12 pm - 10:35 am
BWI
-
CNX
28h 23m
2 stops
EVA Air Logo
11:50 am - 5:40 am
CNX
-
BWI
29h 50m
2 stops
$1,320EVA Air
Sun, Nov 1 - Mon, Nov 16
China Airlines Logo
7:50 am - 10:20 am
BWI
-
CNX
39h 30m
2 stops
China Airlines Logo
11:20 am - 6:30 am
CNX
-
BWI
30h 10m
2 stops
$1,365China Airlines
Sun, Aug 23 - Sat, Aug 29

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

Our best Korean Air deals on Washington, D.C. to Chiang Mai flight tickets
Korean Air
Jul 16
DCA6:02 amWashington, D.C. Reagan-National
51h 43m
2 stops
CNX8:45 pmChiang Mai
Jul 25
CNX9:45 pmChiang Mai
54h 14m
2 stops
DCA4:59 pmWashington, D.C. Reagan-National
$1,904
Korean Air
Jul 8
DCA8:50 pmWashington, D.C. Reagan-National
36h 55m
2 stops
CNX8:45 pmChiang Mai
Jul 18
CNX9:45 pmChiang Mai
54h 14m
2 stops
DCA4:59 pmWashington, D.C. Reagan-National
$1,911
Korean Air
Nov 19
BWI6:10 amBaltimore/Washington
28h 45m
2 stops
CNX10:55 pmChiang Mai
Nov 26
CNX12:15 amChiang Mai
24h 12m
2 stops
BWI12:27 pmBaltimore/Washington
$1,913

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 23
IAD1:15 amWashington, D.C. Dulles Intl
47h 00m
2 stops
CNX11:15 amChiang Mai
Oct 14
CNX11:35 amChiang Mai
21h 25m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,217
EVA Air
Aug 22
IAD1:50 amWashington, D.C. Dulles Intl
21h 35m
1 stop
CNX10:25 amChiang Mai
Sep 21
CNX11:35 amChiang Mai
21h 25m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,231
EVA Air
Sep 23
IAD1:15 amWashington, D.C. Dulles Intl
45h 05m
2 stops
CNX9:20 amChiang Mai
Oct 12
CNX11:35 amChiang Mai
21h 25m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,250

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 June 4, 2026.
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

Cheapest round-trip

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Wed 8/26

3:10 pm-8:25 pm

2 stops42h 15m

Chiang Mai

Thu 9/10

2:30 pm-9:45 am

2 stops30h 15m

$1,081
Quickest round-trip

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Tue 10/6

9:00 pm-9:20 am

2 stops25h 20m

Chiang Mai

Fri 12/18

7:45 pm-3:55 pm

2 stops32h 10m

$1,099

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/1

10:40 am-9:25 am

2 stops34h 45m

Chiang Mai

Mon 11/16

9:05 pm-3:55 pm

2 stops30h 50m

$1,103

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 8/23

9:00 pm-1:45 pm

2 stops29h 45m

Chiang Mai

Mon 9/21

3:30 pm-3:40 pm

2 stops35h 10m

$1,106

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/1

8:05 pm-11:20 am

2 stops27h 15m

Chiang Mai

Mon 11/16

5:05 pm-3:55 pm

2 stops34h 50m

$1,117

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 9/24

9:00 pm-7:10 pm

2 stops35h 10m

Chiang Mai

Wed 10/14

9:10 pm-3:40 pm

2 stops29h 30m

$1,119

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 9/24

9:00 pm-7:10 pm

2 stops35h 10m

Chiang Mai

Wed 10/14

3:30 pm-3:40 pm

2 stops35h 10m

$1,120

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 9/24

9:00 pm-7:10 pm

2 stops35h 10m

Chiang Mai

Sun 10/11

11:55 am-3:40 pm

2 stops38h 45m

$1,158

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Sun 11/1

6:12 pm-10:35 am

2 stops28h 23m

Chiang Mai

Mon 11/16

11:50 am-5:40 am

2 stops29h 50m

$1,320

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Sun 8/23

7:50 am-10:20 am

2 stops39h 30m

Chiang Mai

Sat 8/29

11:20 am-6:30 am

2 stops30h 10m

$1,365

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 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 October, then you should wait until December to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $666.

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

You could potentially save up to 24% 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

Frequently asked questions about flying from Washington, D.C. to Chiang Mai

  • 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 25h 20m 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
1,218 reviews
Search Korean Air flights
DeltaPriceFrom $798Free CancellationRating
7.8
8,395 reviews
Search Delta flights
EVA AirPriceFrom $1,040Free CancellationRating
8.5
1,465 reviews
Search EVA 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.

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 7/4
Sat 7/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand