What are the cheapest airlines flying from Washington, D.C. to Chiang Mai round-trip?

According to our current data, EVA Air ($1,140), China Airlines ($1,247), and Qatar Airways ($1,304) offers the cheapest pricing from Washington, D.C. to Chiang Mai. EVA Air is 33% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Washington, D.C. to Chiang Mai one-way?

The cheapest airlines for a one-way flight from Washington, D.C. to Chiang Mai are China Airlines ($625), EVA Air ($665), and Asiana Airlines ($945).

What is the cheapest month to book a flight from Washington, D.C. to Chiang Mai?

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Chiang Mai (average of $1,011). Flying from Washington, D.C. to Chiang Mai in December is currently the most expensive (average of $1,678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Washington, D.C. to Chiang Mai?

Travelers seeking maximum savings on their Washington, D.C. to Chiang Mai flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Washington, D.C. to Chiang Mai?

When deciding which route to take from Washington, D.C. to Chiang Mai consider Washington, D.C. Reagan-National - Chiang Mai, Washington, D.C. Dulles Intl - Chiang Mai or Baltimore/Washington - Chiang Mai as they are the most popular.

What is the cheapest day to fly round-trip from Washington, D.C. to Chiang Mai?

Flights from Washington, D.C. to Chiang Mai are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Chiang Mai.

What is the cheapest month to fly from Washington, D.C. to Chiang Mai?

March can be a great time to fly to Chiang Mai from Washington, D.C. with a flight ticket averaging about $1,724. Cheapflights users have found deals in the month of March for as cheap as $1,054. The most expensive prices can be found in the month of April.

Most accurate provider : When it comes to deals on Washington, D.C.-Chiang Mai flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Chiang Mai flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Chiang Mai flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Chiang Mai from Washington, D.C.?

For a flight from Washington, D.C. to Chiang Mai, you will be flying into Chiang Mai. Chiang Mai (CNX) is just 1.9 mi from the center of the city. Chiang Mai is the only Chiang Mai airport and it handles 0 inbound flights from Washington, D.C. per day. 1 airline has flights to Chiang Mai from Washington, D.C. on a regular basis.

Can I find deals for flights from Washington, D.C. to Chiang Mai that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Chiang Mai?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Chiang Mai.

Can I find deals for business class flights from Washington, D.C. to Chiang Mai?

Yes. Cheapflights offers flight deals from Washington, D.C. to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$567+ Flights from Washington, D.C. to Chiang Mai - Compare & Save Big

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Washington, D.C. to Chiang Mai with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington, D.C. to Chiang Mai

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$1,121 (FlightHub)
One-way from	$567 (Kiwi.com)
Popular in	April
Cheapest in	March
Average price	$1,478

Provider with most accurate pricing for Washington, D.C. (WAS)-Chiang Mai flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Chiang Mai flights.

Search Deals

From Washington, D.C. (WAS) to Chiang Mai

Search Deals

One-way flight from Washington, D.C. (WAS) to Chiang Mai

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($21 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($77 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

Find flight deals from Washington, D.C. to Chiang Mai

Cheapest flights from Washington, D.C. to Chiang Mai
Explore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Mon 9/19:00 pmIAD - CNX

2 stops27h 15mMultiple Airlines

Tue 9/308:00 pmCNX - IAD

2 stops30h 40mMultiple Airlines

Deal found 4/30

$1,121

Tue 10/146:55 pmIAD - CNX

2 stops28h 30mEVA Air

Thu 10/3011:50 amCNX - IAD

2 stops29h 05mEVA Air

Deal found 4/30

$1,140

Thu 5/811:00 amIAD - CNX

2 stops35h 20mQatar Airways

Sun 5/188:00 pmCNX - IAD

2 stops30h 40mQatar Airways

Deal found 4/30

$1,145

Tue 10/146:55 pmBWI - CNX

2 stops28h 30mMultiple Airlines

Thu 10/3011:50 amCNX - BWI

2 stops28h 55mMultiple Airlines

Deal found 4/30

$1,175

Thu 5/16:35 pmDCA - CNX

2 stops28h 50mEVA Air

Sun 5/1111:35 amCNX - DCA

2 stops44h 23mEVA Air

Deal found 4/30

$1,235

Sun 8/105:02 pmDCA - CNX

2 stops43h 38mMultiple Airlines

Fri 8/2212:45 amCNX - DCA

2 stops31h 14mMultiple Airlines

Deal found 4/30

$1,244

Thu 5/86:35 pmDCA - CNX

2 stops28h 45mChina Airlines

Sun 5/1811:20 amCNX - DCA

2 stops45h 39mChina Airlines

Deal found 4/30

$1,247

Tue 10/1411:00 pmIAD - CNX

1 stop35h 50mAir China

Thu 10/3011:05 pmCNX - IAD

1 stop31h 25mAir China

Deal found 4/30

$1,502

Thu 5/16:00 amIAD - CNX

2 stops30h 40mAsiana Airlines

Sat 5/1012:45 amCNX - IAD

2 stops31h 29mAsiana Airlines

Deal found 4/30

$1,580

Thu 12/259:30 pmIAD - CNX

1 stop20h 25mEtihad Airways

Sat 1/178:45 amCNX - IAD

1 stop43h 20mEtihad Airways

Deal found 5/1

$1,581

Wed 7/28:19 pmIAD - CNX

2 stops27h 01mChina Airlines

Sat 7/1211:20 amCNX - IAD

2 stops30h 30mChina Airlines

Deal found 4/30

$1,631

Tue 6/107:05 pmBWI - CNX

2 stops28h 20mEVA Air

Tue 6/1711:35 amCNX - BWI

2 stops29h 44mEVA Air

Deal found 4/30

$1,733

Best flights from Washington, D.C. to Chiang Mai
Discover carefully curated flight deals from Washington, D.C. to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Mon 9/19:00 pmIAD - CNX

2 stops27h 15mMultiple Airlines

Tue 9/308:00 pmCNX - IAD

2 stops30h 40mMultiple Airlines

Deal found 4/30

$1,121

Tue 10/146:55 pmIAD - CNX

2 stops28h 30mEVA Air

Thu 10/3011:50 amCNX - IAD

2 stops29h 05mEVA Air

Deal found 4/30

$1,140

Thu 5/86:35 pmDCA - CNX

2 stops28h 45mChina Airlines

Sun 5/1811:20 amCNX - DCA

2 stops45h 39mChina Airlines

Deal found 4/30

$1,247

Mon 8/189:00 pmIAD - CNX

2 stops27h 15mQatar Airways

Sun 8/3112:35 pmCNX - IAD

2 stops38h 05mQatar Airways

Deal found 4/30

$1,304

Tue 10/1411:00 pmIAD - CNX

1 stop35h 50mAir China

Thu 10/3011:05 pmCNX - IAD

1 stop31h 25mAir China

Deal found 4/30

$1,502

Sun 8/105:45 pmIAD - CNX

2 stops42h 55mAsiana Airlines

Fri 8/2212:45 amCNX - IAD

2 stops34h 45mAsiana Airlines

Deal found 4/30

$1,580

Fri 5/301:30 pmIAD - CNX

2 stops38h 20mTurkish Airlines

Fri 6/209:10 pmCNX - IAD

2 stops33h 35mTurkish Airlines

Deal found 4/30

$1,673

Tue 10/146:15 amIAD - CNX

2 stops28h 40mDelta

Wed 10/2912:15 amCNX - IAD

1 stop21h 35mDelta

Deal found 4/30

$1,786

Mon 8/181:30 pmIAD - CNX

1 stop44h 15mKorean Air

Sun 8/319:45 pmCNX - IAD

1 stop24h 10mKorean Air

Deal found 4/30

$2,049

Tue 10/146:55 pmBWI - CNX

2 stops28h 30mMultiple Airlines

Thu 10/3011:50 amCNX - BWI

2 stops28h 55mMultiple Airlines

Deal found 4/30

$1,175

Wed 7/28:19 pmIAD - CNX

2 stops27h 01mChina Airlines

Sat 7/1211:20 amCNX - IAD

2 stops30h 30mChina Airlines

Deal found 4/30

$1,631

Tue 6/107:05 pmBWI - CNX

2 stops28h 20mEVA Air

Tue 6/1711:35 amCNX - BWI

2 stops29h 44mEVA Air

Deal found 4/30

$1,733

Last-minute flights from Washington, D.C. to Chiang Mai
Discover last-minute flight deals from Washington, D.C. to Chiang Mai. Data last updated May 1, 2025 and is based on user searches.

Thu 5/16:35 pmDCA - CNX

2 stops28h 50mEVA Air

Sun 5/1111:35 amCNX - DCA

2 stops44h 23mEVA Air

Deal found 4/30

$1,235

Thu 5/16:59 pmIAD - CNX

2 stops28h 26mEVA Air

Sun 5/1111:35 amCNX - IAD

2 stops39h 25mEVA Air

Deal found 4/30

$1,273

Thu 5/16:00 amIAD - CNX

2 stops30h 40mAsiana Airlines

Sat 5/1012:45 amCNX - IAD

2 stops31h 29mAsiana Airlines

Deal found 4/30

$1,580

Thu 5/17:50 pmBWI - CNX

2 stops39h 05mKorean Air

Sun 5/1111:15 pmCNX - BWI

2 stops36h 33mKorean Air

Deal found 4/30

$2,853

Thu 5/811:00 amIAD - CNX

2 stops35h 20mQatar Airways

Sun 5/188:00 pmCNX - IAD

2 stops30h 40mQatar Airways

Deal found 4/30

$1,145

Thu 5/86:35 pmDCA - CNX

2 stops28h 45mChina Airlines

Sun 5/1811:20 amCNX - DCA

2 stops45h 39mChina Airlines

Deal found 4/30

$1,247

Thu 5/86:00 amIAD - CNX

2 stops30h 40mAsiana Airlines

Sat 5/1712:45 amCNX - IAD

2 stops39h 38mAsiana Airlines

Deal found 4/30

$1,673

Thu 5/85:40 amBWI - CNX

2 stops29h 15mKorean Air

Sun 5/1811:15 pmCNX - BWI

2 stops27h 27mKorean Air

Deal found 4/30

$2,891

Thu 5/86:59 amDCA - CNX

2 stops29h 41mMultiple Airlines

Sat 5/1712:45 amCNX - DCA

2 stops32h 43mMultiple Airlines

Deal found 4/30

$4,710

Fri 5/91:30 pmIAD - CNX

2 stops34h 45mMultiple Airlines

Sat 5/179:10 pmCNX - IAD

2 stops49h 35mMultiple Airlines

Deal found 4/30

$1,293

Fri 5/306:59 amDCA - CNX

2 stops29h 41mMultiple Airlines

Thu 6/1912:45 amCNX - DCA

2 stops50h 03mMultiple Airlines

Deal found 4/30

$2,974

Sat 5/318:30 pmBWI - CNX

3 stops31h 20mMultiple Airlines

Thu 6/126:30 amCNX - BWI

3 stops47h 58mMultiple Airlines

Deal found 4/30

$1,802

One-way flights from Washington, D.C. to Chiang Mai
Search for one-way flight options from Washington, D.C. to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Sun 5/410:05 pmIAD - CNX

3 stops50h 20mMultiple Airlines

Deal found 4/30

$567

Sun 5/46:35 pmDCA - CNX

2 stops28h 45mChina Airlines

Deal found 4/30

$625

Tue 5/65:45 amBWI - CNX

3 stops38h 40mMultiple Airlines

Deal found 4/30

$638

Tue 5/66:35 pmDCA - CNX

2 stops28h 50mEVA Air

Deal found 4/30

$665

Tue 5/67:00 amIAD - CNX

2 stops40h 25mEVA Air

Deal found 4/30

$683

Wed 7/28:30 amIAD - CNX

2 stops28h 10mAsiana Airlines

Deal found 4/30

$945

Sat 6/77:05 pmBWI - CNX

2 stops28h 20mEVA Air

Deal found 4/30

$1,067

Tue 5/611:00 pmIAD - CNX

1 stop35h 50mAir China

Deal found 4/30

$1,080

Sun 6/158:40 pmDCA - CNX

3 stops35h 00mMultiple Airlines

Deal found 4/30

$1,089

Wed 7/21:30 pmIAD - CNX

1 stop44h 15mKorean Air

Deal found 4/30

$1,310

Sat 6/76:15 amBWI - CNX

2 stops28h 40mDelta

Deal found 4/30

$3,642

Cheapflights 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

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 5/8

11:00 am-9:20 am

2 stops35h 20m

Chiang Mai

Sun 5/18

8:00 pm-3:40 pm

2 stops30h 40m

$1,145

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Thu 5/8

6:35 pm-10:20 am

2 stops28h 45m

Chiang Mai

Sun 5/18

11:20 am-9:59 pm

2 stops45h 39m

$1,247

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 5/9

1:30 pm-11:15 am

2 stops34h 45m

Chiang Mai

Sat 5/17

9:10 pm-11:45 am

2 stops49h 35m

$1,293

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Tue 6/10

8:30 pm-2:50 pm

3 stops31h 20m

Chiang Mai

Tue 6/17

6:30 am-7:29 pm

3 stops47h 59m

$1,596

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Wed 7/2

8:19 pm-10:20 am

2 stops27h 01m

Chiang Mai

Sat 7/12

11:20 am-6:50 am

2 stops30h 30m

$1,631

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 5/8

6:00 am-11:40 pm

2 stops30h 40m

Chiang Mai

Sat 5/17

12:45 am-5:23 am

2 stops39h 38m

$1,673

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sat 5/31

9:00 am-10:25 am

2 stops38h 25m

Chiang Mai

Thu 6/12

11:35 am-4:25 pm

2 stops39h 50m

$1,717

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Tue 6/10

7:05 pm-10:25 am

2 stops28h 20m

Chiang Mai

Tue 6/17

11:35 am-6:19 am

2 stops29h 44m

$1,733

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 5/31

8:00 am-10:25 am

2 stops39h 25m

Chiang Mai

Thu 6/12

11:35 am-9:42 pm

2 stops45h 07m

$1,751

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 6/10

9:40 am-11:40 pm

2 stops27h 00m

Chiang Mai

Mon 6/16

12:45 am-8:52 am

2 stops43h 07m

$2,356

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 25 results

Compare providers for flights from Washington, D.C. to Chiang Mai

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Chiang Mai in May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C.-Chiang Mai flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Chiang Mai flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Chiang Mai flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Washington, D.C. with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Chiang Mai

What is the cheapest time of day to fly from WAS to CNX?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 25% on flights from Washington, D.C. to Chiang Mai by exploring options for tickets in the evening.

Rainfall in Chiang Mai by month

In terms of precipitation, rainfall in Chiang Mai ranges from 0.0 - 9.8 inches per month. September is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Chiang Mai when rainfall is around 0.0 in.

Temperature in Chiang Mai by month

If weather is an important factor for your trip to Chiang Mai, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Chiang Mai

Read through reviews of airlines operating flights from Washington, D.C. to Chiang Mai, such as EVA Air, Korean Air and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

EVA Air

8.4

Very good

1,186 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Korean Air

8.4

Very good

1,068 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

China Airlines

8.3

Very good

732 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Asiana Airlines

8.2

Very good

442 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Delta

8.0

Very good

7,934 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

What airport do you fly into for flights to Chiang Mai from Washington, D.C.?
For a flight from Washington, D.C. to Chiang Mai, you will be flying into Chiang Mai. Chiang Mai (CNX) is just 1.9 mi from the center of the city. Chiang Mai is the only Chiang Mai airport and it handles 0 inbound flights from Washington, D.C. per day. 1 airline has flights to Chiang Mai from Washington, D.C. on a regular basis.
What are the cheapest airlines flying from Washington, D.C. to Chiang Mai round-trip?
According to our current data, EVA Air ($1,140), China Airlines ($1,247), and Qatar Airways ($1,304) offers the cheapest pricing from Washington, D.C. to Chiang Mai. EVA Air is 33% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. to Chiang Mai one-way?
The cheapest airlines for a one-way flight from Washington, D.C. to Chiang Mai are China Airlines ($625), EVA Air ($665), and Asiana Airlines ($945).
What are the most popular routes from Washington, D.C. to Chiang Mai?
When deciding which route to take from Washington, D.C. to Chiang Mai consider Washington, D.C. Reagan-National - Chiang Mai, Washington, D.C. Dulles Intl - Chiang Mai or Baltimore/Washington - Chiang Mai as they are the most popular.
Can I find deals for flights from Washington, D.C. to Chiang Mai that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Chiang Mai?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Chiang Mai.
Can I find deals for business class flights from Washington, D.C. to Chiang Mai?
Yes. Cheapflights offers flight deals from Washington, D.C. to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. to Chiang Mai?
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Chiang Mai (average of $1,011). Flying from Washington, D.C. to Chiang Mai in December is currently the most expensive (average of $1,678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Washington, D.C. to Chiang Mai

Airline	Cheapest	Average	Flexibility	On-time
Korean Air	Cheapest$1,519	Average$1,781	FlexibilityNo cancel fee	On-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$567+ Cheap flights from Washington, D.C. (WAS) to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Chiang Mai with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington, D.C. to Chiang Mai

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington, D.C. to Chiang Mai

Cheapest flights from Washington, D.C. to Chiang MaiExplore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Washington, D.C. to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Chiang Mai in May.

Best time to book a flight from Washington, D.C. to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Chiang Mai

What is the cheapest time of day to fly from WAS to CNX?

Find hourly flight availability from Washington, D.C. to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average rainfall totals by month.

Temperature in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average temperature totals by month.

Reviews of airlines servicing Chiang Mai

Read through reviews of airlines operating flights from Washington, D.C. to Chiang Mai, such as EVA Air, Korean Air and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Chiang Mai from Washington, D.C.?

What are the cheapest airlines flying from Washington, D.C. to Chiang Mai round-trip?

What are the cheapest airlines to fly from Washington, D.C. to Chiang Mai one-way?

What are the most popular routes from Washington, D.C. to Chiang Mai?

Can I find deals for flights from Washington, D.C. to Chiang Mai that include hotel bookings?

How can I find direct flights from Washington, D.C. to Chiang Mai?

Can I find deals for business class flights from Washington, D.C. to Chiang Mai?

What is the cheapest month to book a flight from Washington, D.C. to Chiang Mai?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Washington, D.C. to Chiang Mai

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Washington, D.C. to Chiang Mai
Explore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.