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Cheap flights from Washington, D.C. Reagan-National Airport to Chiang Mai from $677

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 7/18. 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

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.
Korean Air Logo
7:00 am - 10:55 pm
DCA
-
CNX
27h 55m
2 stops
Korean Air Logo
12:15 am - 1:25 pm
CNX
-
DCA
25h 10m
2 stops
$993Korean Air
Sun, Nov 8 - Wed, Nov 11
Delta Logo
7:00 am - 10:55 pm
DCA
-
CNX
27h 55m
2 stops
Delta Logo
12:15 am - 2:38 pm
CNX
-
DCA
26h 23m
2 stops
$1,038Delta
Sun, Nov 8 - Wed, Nov 11
Delta Logo
6:05 am - 10:55 pm
DCA
-
CNX
28h 50m
2 stops
Delta Logo
12:15 am - 6:05 pm
CNX
-
DCA
29h 50m
2 stops
$1,222Delta
Fri, Nov 20 - Fri, Nov 27
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,295Multiple Airlines
Tue, Sep 1 - Wed, Sep 30
Multiple Airlines Logo
9:30 am - 10:25 am
DCA
-
CNX
61h 55m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,323Multiple Airlines
Wed, Oct 7 - Mon, Oct 12
Multiple Airlines Logo
9:30 am - 10:20 am
DCA
-
CNX
37h 50m
2 stops
Multiple Airlines Logo
11:20 am - 8:00 pm
CNX
-
DCA
43h 40m
2 stops
$1,353Multiple Airlines
Sat, Aug 22 - Fri, Aug 28
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,364Multiple Airlines
Fri, Sep 25 - Mon, Oct 12
Multiple Airlines Logo
4:20 pm - 10:00 pm
DCA
-
CNX
42h 40m
2 stops
Multiple Airlines Logo
11:00 pm - 10:18 am
CNX
-
DCA
46h 18m
2 stops
$1,445Multiple Airlines
Sun, Aug 9 - Thu, Sep 3
Multiple Airlines Logo
6:59 pm - 10:25 am
DCA
-
CNX
52h 26m
2 stops
Multiple Airlines Logo
11:35 am - 8:00 pm
CNX
-
DCA
43h 25m
2 stops
$1,446Multiple Airlines
Sat, Aug 8 - Thu, Sep 3
China Eastern Logo
11:00 am - 1:25 pm
DCA
-
CNX
39h 25m
2 stops
China Eastern Logo
2:55 pm - 10:59 pm
CNX
-
DCA
43h 04m
2 stops
$1,448China Eastern
Mon, Sep 7 - Sat, Sep 19

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

Our best Korean Air deals on Washington, D.C. Reagan-National Airport to Chiang Mai flight tickets
Korean Air
Nov 8
DCA7:00 amWashington, D.C. Reagan-National
27h 55m
2 stops
CNX10:55 pmChiang Mai
Nov 11
CNX12:15 amChiang Mai
25h 10m
2 stops
DCA1:25 pmWashington, D.C. Reagan-National
$993
Korean Air
Nov 6
DCA7:00 amWashington, D.C. Reagan-National
27h 55m
2 stops
CNX10:55 pmChiang Mai
Nov 28
CNX12:15 amChiang Mai
25h 10m
2 stops
DCA1:25 pmWashington, D.C. Reagan-National
$1,479
Korean Air
Sep 5
DCA6:00 amWashington, D.C. Reagan-National
27h 45m
2 stops
CNX8:45 pmChiang Mai
Sep 19
CNX9:45 pmChiang Mai
27h 25m
2 stops
DCA2:10 pmWashington, D.C. Reagan-National
$1,793

China Eastern flights from Washington, D.C. Reagan-National Airport to Chiang Mai

Our best China Eastern deals on Washington, D.C. Reagan-National Airport to Chiang Mai flight tickets
China Eastern
Sep 7
DCA11:00 amWashington, D.C. Reagan-National
39h 25m
2 stops
CNX1:25 pmChiang Mai
Sep 19
CNX2:55 pmChiang Mai
43h 04m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$1,448
China Eastern
Nov 9
DCA11:00 amWashington, D.C. Reagan-National
39h 20m
2 stops
CNX2:20 pmChiang Mai
Nov 23
CNX3:35 pmChiang Mai
38h 30m
2 stops
DCA6:05 pmWashington, D.C. Reagan-National
$1,449
China Eastern
Aug 10
DCA11:00 amWashington, D.C. Reagan-National
39h 25m
2 stops
CNX1:25 pmChiang Mai
Aug 17
CNX2:55 pmChiang Mai
43h 04m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$2,753

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 June 29, 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

Cheapest round-trip
Quickest round-trip

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 11/8

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Wed 11/11

12:15 am-1:25 pm

2 stops25h 10m

$993

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 11/8

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Wed 11/11

12:15 am-2:38 pm

2 stops26h 23m

$1,038

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Fri 11/20

6:05 am-10:55 pm

2 stops28h 50m

Chiang Mai

Fri 11/27

12:15 am-6:05 pm

2 stops29h 50m

$1,222

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 9/1

6:59 pm-10:25 am

2 stops52h 26m

Chiang Mai

Wed 9/30

11:35 am-8:00 pm

2 stops43h 25m

$1,295

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 10/7

9:30 am-10:25 am

2 stops61h 55m

Chiang Mai

Mon 10/12

11:35 am-8:00 pm

2 stops43h 25m

$1,323

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 8/22

9:30 am-10:20 am

2 stops37h 50m

Chiang Mai

Fri 8/28

11:20 am-8:00 pm

2 stops43h 40m

$1,353

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Fri 9/25

6:59 pm-10:25 am

2 stops52h 26m

Chiang Mai

Mon 10/12

11:35 am-8:00 pm

2 stops43h 25m

$1,364

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 8/9

4:20 pm-10:00 pm

2 stops42h 40m

Chiang Mai

Thu 9/3

11:00 pm-10:18 am

2 stops46h 18m

$1,445

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 8/8

6:59 pm-10:25 am

2 stops52h 26m

Chiang Mai

Thu 9/3

11:35 am-8:00 pm

2 stops43h 25m

$1,446

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 9/7

11:00 am-1:25 pm

2 stops39h 25m

Chiang Mai

Sat 9/19

2:55 pm-10:59 pm

2 stops43h 04m

$1,448

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

28h 21m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Chiang Mai takes 28h 21m
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

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Chiang Mai

  • 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 28h 21m, 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 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.

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Chiang Mai

  • How do I get Price Alerts for flights from Washington, D.C. Reagan-National Airport to Chiang Mai?

    Search flight deals from Washington, D.C. Reagan-National Airport to Chiang Mai. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Washington, D.C. Reagan-National Airport to Chiang Mai with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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.

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