What is the cheapest airline that flies from Washington, D.C. to Chiang Mai?

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

Which layover airport has the shortest travel time from Washington, D.C. to Chiang Mai?

Flights connecting via Abu Dhabi (AUH) have the shortest average one-way travel time: 20h 55m.

How long does it take to fly to Chiang Mai?

On average, it takes 24h to fly from Washington, D.C. to Chiang Mai if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Chiang Mai (the most popular airport in Chiang Mai). If you’re flying out of Baltimore and into Chiang Mai, then the flight time is around 27h 47m.

Which layover airport has the shortest connection time from Washington, D.C. to Chiang Mai?

Incheon (ICN) has the shortest average layover time for this route: 2h 08m.

Which airport is the most popular layover for flights between Washington, D.C. and Chiang Mai?

Incheon (ICN) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Washington, D.C. to Chiang Mai?

Flights via Incheon (ICN) offer the lowest average round-trip price of $1,176.

What airlines fly to Chiang Mai?

Korean Air, EVA Air and Delta are the top three most popular airlines that fly to Chiang Mai from Washington, D.C. according to our data. Korean Air is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 3 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

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?

As of July 2026, there are 3 operators available to choose from 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.

$487 Cheap Flights from Washington, D.C. to Chiang Mai in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. and Chiang Mai?

Prices are currently low for flights on this route. Typical prices usually range from $1,430 to $1,450. The lowest price recently found on this route was $1,109.

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 pm - 11:15 am

IAD

CNX

27h 15m

2 stops

4:55 pm - 8:45 am

CNX

IAD

26h 50m

2 stops

$1,109Multiple Airlines

Wed, Sep 9 - Wed, Sep 23

9:00 pm - 1:45 pm

IAD

CNX

29h 45m

2 stops

7:45 pm - 3:55 pm

CNX

IAD

32h 10m

2 stops

$1,116Multiple Airlines

Sun, Oct 11 - Tue, Nov 10

9:00 pm - 4:15 pm

IAD

CNX

32h 15m

2 stops

7:45 pm - 3:55 pm

CNX

IAD

32h 10m

2 stops

$1,120Multiple Airlines

Wed, Oct 21 - Wed, Nov 4

9:00 pm - 11:15 am

IAD

CNX

51h 15m

2 stops

3:30 pm - 8:45 am

CNX

IAD

28h 15m

2 stops

$1,124Multiple Airlines

Thu, Sep 24 - Wed, Oct 14

8:00 am - 10:55 pm

IAD

CNX

27h 55m

2 stops

12:15 am - 9:50 am

CNX

IAD

21h 35m

1 stop

$1,125Korean Air

Sun, Oct 25 - Sun, Nov 15

9:00 pm - 7:10 pm

IAD

CNX

35h 10m

2 stops

9:25 am - 3:40 pm

CNX

IAD

41h 15m

2 stops

$1,134Multiple Airlines

Thu, Sep 10 - Wed, Sep 23

7:59 pm - 10:55 pm

IAD

CNX

39h 56m

2 stops

12:15 am - 4:36 pm

CNX

IAD

28h 21m

2 stops

$1,136Delta

Sun, Oct 25 - Sun, Nov 15

9:00 pm - 1:45 pm

IAD

CNX

29h 45m

2 stops

2:35 pm - 8:45 am

CNX

IAD

29h 10m

2 stops

$1,172Qatar Airways

Fri, Sep 4 - Fri, Sep 11

5:00 pm - 10:55 pm

DCA

CNX

41h 55m

2 stops

12:15 am - 6:05 pm

CNX

DCA

29h 50m

2 stops

$1,236Korean Air

Sun, Jan 17 - Sat, Jan 30

7:30 pm - 10:55 pm

DCA

CNX

39h 25m

2 stops

12:15 am - 7:19 pm

CNX

DCA

31h 04m

2 stops

$1,266Delta

Sun, Jan 17 - Thu, Mar 4

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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

Oct 25

IAD8:00 amWashington, D.C. Dulles Intl

27h 55m

2 stops

CNX10:55 pmChiang Mai

Nov 15

CNX12:15 amChiang Mai

21h 35m

1 stop

IAD9:50 amWashington, D.C. Dulles Intl

$1,125

Korean Air

Jan 5

IAD7:00 amWashington, D.C. Dulles Intl

27h 55m

2 stops

CNX10:55 pmChiang Mai

Mar 3

CNX12:15 amChiang Mai

21h 35m

1 stop

IAD9:50 amWashington, D.C. Dulles Intl

$1,185

Korean Air

Jan 5

IAD7:00 amWashington, D.C. Dulles Intl

27h 55m

2 stops

CNX10:55 pmChiang Mai

Mar 3

CNX12:15 amChiang Mai

28h 02m

2 stops

IAD4:17 pmWashington, D.C. Dulles Intl

$1,196

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

Our best Delta deals on Washington, D.C. to Chiang Mai flight tickets

Delta

Oct 25

IAD7:59 pmWashington, D.C. Dulles Intl

39h 56m

2 stops

CNX10:55 pmChiang Mai

Nov 15

CNX12:15 amChiang Mai

28h 21m

2 stops

IAD4:36 pmWashington, D.C. Dulles Intl

$1,136

Delta

Nov 1

IAD6:12 pmWashington, D.C. Dulles Intl

40h 43m

2 stops

CNX10:55 pmChiang Mai

Nov 15

CNX12:15 amChiang Mai

35h 31m

2 stops

IAD11:46 pmWashington, D.C. Dulles Intl

$1,230

Delta

Nov 1

IAD5:08 pmWashington, D.C. Dulles Intl

41h 47m

2 stops

CNX10:55 pmChiang Mai

Nov 15

CNX12:15 amChiang Mai

35h 36m

2 stops

IAD11:51 pmWashington, D.C. Dulles Intl

$1,231

momondo Fare Finder

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 9/9

9:00 pm-11:15 am

2 stops27h 15m

Chiang Mai

Wed 9/23

4:55 pm-8:45 am

2 stops26h 50m

$1,109

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/11

9:00 pm-1:45 pm

2 stops29h 45m

Chiang Mai

Tue 11/10

7:45 pm-3:55 pm

2 stops32h 10m

$1,116

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Wed 10/21

9:00 pm-4:15 pm

2 stops32h 15m

Chiang Mai

Wed 11/4

7:45 pm-3:55 pm

2 stops32h 10m

$1,120

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 9/24

9:00 pm-11:15 am

2 stops51h 15m

Chiang Mai

Wed 10/14

3:30 pm-8:45 am

2 stops28h 15m

$1,124

Quickest round-trip

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/25

8:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Sun 11/15

12:15 am-9:50 am

1 stop21h 35m

$1,125

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 9/10

9:00 pm-7:10 pm

2 stops35h 10m

Chiang Mai

Wed 9/23

9:25 am-3:40 pm

2 stops41h 15m

$1,134

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 10/25

7:59 pm-10:55 pm

2 stops39h 56m

Chiang Mai

Sun 11/15

12:15 am-4:36 pm

2 stops28h 21m

$1,136

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 9/4

9:00 pm-1:45 pm

2 stops29h 45m

Chiang Mai

Fri 9/11

2:35 pm-8:45 am

2 stops29h 10m

$1,172

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 1/17

5:00 pm-10:55 pm

2 stops41h 55m

Chiang Mai

Sat 1/30

12:15 am-6:05 pm

2 stops29h 50m

$1,236

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sun 1/17

7:30 pm-10:55 pm

2 stops39h 25m

Chiang Mai

Thu 3/4

12:15 am-7:19 pm

2 stops31h 04m

$1,266

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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 August, then you should wait until January to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $1,215.

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

Fastest flight time	22h 40m
Direct flights	None

The fastest flight from Washington, D.C. to Chiang Mai takes 22h 40m

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 22h 40m 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?
As of July 2026, there are 3 operators available to choose from 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?
Based on momondo bookings for flights between Washington, D.C. and Chiang Mai, the leading airline is Delta, making up 49% of the total bookings. Other popular airlines include EVA Air with 25% and Korean Air with 25%.

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 Air	PriceFrom $741	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Delta	PriceFrom $798	Free Cancellation	Rating 7.8 8,478 reviews	Search Delta flights
EVA Air	PriceFrom $1,040	Free Cancellation	Rating 8.5 1,502 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.

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Cheap flights from Washington, D.C. to Chiang Mai from $487

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 8/23. 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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Korean Air flights from Washington, D.C. to Chiang Mai

Our best Korean Air deals on Washington, D.C. to Chiang Mai flight tickets

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

Our best Delta deals on Washington, D.C. to Chiang Mai flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Chiang Mai that are best for you.

See travel insights to Chiang Mai from

How to get the cheapest flight ticket from Washington, D.C. to Chiang Mai

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?

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

What is the cheapest airline that flies from Washington, D.C. to Chiang Mai?

What airlines fly to Chiang Mai?

Which airport is the most popular layover for flights between Washington, D.C. and Chiang Mai?

Which layover airport offers the lowest fares from Washington, D.C. to Chiang Mai?

Which layover airport has the shortest travel time from Washington, D.C. to Chiang Mai?

Which layover airport has the shortest connection time from Washington, D.C. to Chiang Mai?

How long does it take to fly to Chiang Mai?

When to book flights from Washington, D.C. to Chiang Mai

Cheap Washington, D.C. to Chiang Mai (WAS to CNX) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

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Fly your favorite airline to Chiang Mai

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Chiang Mai

List of cabin classes available on flights landing in Chiang Mai. Availability may vary depending on flight origin and airline.

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