Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Reagan-National Airport to Chiang Mai from $618

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. Reagan-National Airport to Chiang Mai departing on 5/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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. Reagan-National Airport to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
60h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,102Multiple Airlines
Mon, Mar 2 - Mon, Apr 13
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
60h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,105Multiple Airlines
Mon, Mar 2 - Mon, Apr 13
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
61h 36m
2 stops
Multiple Airlines Logo
11:50 am - 8:00 pm
CNX
-
DCA
43h 10m
2 stops
$1,117Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
37h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,121Multiple Airlines
Tue, Mar 10 - Tue, Apr 7
Multiple Airlines Logo
9:59 am - 10:25 am
DCA
-
CNX
36h 26m
2 stops
Multiple Airlines Logo
11:25 am - 9:59 pm
CNX
-
DCA
45h 34m
2 stops
$1,128Multiple Airlines
Sun, Mar 1 - Thu, Mar 12
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
37h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,154Multiple Airlines
Sun, Mar 8 - Tue, Apr 7
Multiple Airlines Logo
9:59 am - 10:35 am
DCA
-
CNX
36h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,159Multiple Airlines
Tue, Mar 3 - Tue, Apr 7
Multiple Airlines Logo
6:59 pm - 10:35 am
DCA
-
CNX
28h 36m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,163Multiple Airlines
Mon, Mar 16 - Tue, Apr 7
Multiple Airlines Logo
5:00 pm - 10:35 am
DCA
-
CNX
30h 35m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,168Multiple Airlines
Sat, Mar 14 - Tue, Apr 7
Multiple Airlines Logo
5:00 pm - 10:35 am
DCA
-
CNX
30h 35m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,172Multiple Airlines
Mon, Mar 9 - Tue, Apr 7

EVA Air flights from Washington, D.C. Reagan-National Airport to Chiang Mai

Our best EVA Air deals on Washington, D.C. Reagan-National Airport to Chiang Mai flight tickets
EVA Air
Mar 21
DCA8:00 amWashington, D.C. Reagan-National
39h 35m
2 stops
CNX10:35 amChiang Mai
Apr 3
CNX11:35 amChiang Mai
43h 25m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
$1,647
EVA Air
Jul 26
DCA5:00 pmWashington, D.C. Reagan-National
30h 25m
2 stops
CNX10:25 amChiang Mai
Aug 9
CNX11:35 amChiang Mai
43h 27m
2 stops
DCA8:02 pmWashington, D.C. Reagan-National
$1,821
EVA Air
Jun 25
DCA9:59 amWashington, D.C. Reagan-National
37h 26m
2 stops
CNX10:25 amChiang Mai
Jul 6
CNX11:35 amChiang Mai
41h 24m
2 stops
DCA5:59 pmWashington, D.C. Reagan-National
$1,831

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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 February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/2

9:59 am-10:35 am

2 stops60h 36m

Chiang Mai

Mon 4/13

11:35 am-8:00 pm

2 stops43h 25m

$1,102

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/2

9:59 am-10:35 am

2 stops60h 36m

Chiang Mai

Mon 4/13

11:35 am-8:00 pm

2 stops43h 25m

$1,105

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 3/18

9:59 am-10:35 am

2 stops61h 36m

Chiang Mai

Wed 3/25

11:50 am-8:00 pm

2 stops43h 10m

$1,117

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 3/10

9:59 am-10:35 am

2 stops37h 36m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,121

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 3/1

9:59 am-10:25 am

2 stops36h 26m

Chiang Mai

Thu 3/12

11:25 am-9:59 pm

2 stops45h 34m

$1,128

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 3/8

9:59 am-10:35 am

2 stops37h 36m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,154

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 3/3

9:59 am-10:35 am

2 stops36h 36m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,159

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/16

6:59 pm-10:35 am

2 stops28h 36m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,163

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 3/14

5:00 pm-10:35 am

2 stops30h 35m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,168

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/9

5:00 pm-10:35 am

2 stops30h 35m

Chiang Mai

Tue 4/7

11:35 am-8:00 pm

2 stops43h 25m

$1,172

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Chiang Mai from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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 airline that flies from Washington, D.C. Reagan-National to Chiang Mai?

EVA Air is the most popular carrier operating from Washington, D.C. Reagan-National to Chiang Mai

When to book flights from Washington, D.C. Reagan-National Airport to Chiang Mai

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Chiang Mai (DCA to CNX) flight deals and tips

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

Fastest flight time

29h 24m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Chiang Mai takes 29h 24m
There are no direct flights from Washington, D.C. Reagan-National Airport to Chiang Mai. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Chiang Mai.
Search flight deals

  • How far is Washington, D.C. Reagan-National to Chiang Mai by plane?

    Chiang Mai is 8440.1 mi away from Washington, D.C. Reagan-National. Flights usually cover this in 29h 24m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Chiang Mai Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Chiang Mai Airport.

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

    The travel and health documents you'll need for your trip to Chiang Mai Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chiang Mai Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Washington, D.C. Reagan-National Airport to Chiang Mai

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Chiang Mai with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $1,068Free CancellationRating
7.9
8,138 reviews
Search Delta flights

Why use momondo?

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

Finding the right flight to Chiang Mai from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chiang Mai quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Chiang Mai from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Chiang Mai from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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
Thu 3/5
Thu 3/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand