How long is the flight from Washington, D.C. to Chiang Mai?

For as low as $1,080, Korean Air can have you in Chiang Mai from Washington, D.C. in 28h 55m. Airlines will cover a distance of 8441 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

According to our current data, Korean Air ($673), and Delta ($798) offers the cheapest pricing from Washington, D.C. to Chiang Mai. Korean Air is 53% cheaper than the average price of flights available within the next 90 days to this destination.

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.

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).

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. Dulles Intl - Chiang Mai, Washington, D.C. Reagan-National - Chiang Mai or Baltimore/Washington - Chiang Mai as they are the most popular.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Chiang Mai as you normally would.

Most accurate provider : When it comes to deals on Washington, D.C.-Chiang Mai flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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. 2 airlines have 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.

$435+ Flights from Washington, D.C. to Chiang Mai

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

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$895 (Kiwi.com)
One-way from	$435 (Kiwi.com)
Popular in	April
Cheapest in	January
Average price	$1,128

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

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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. 15% potential increase in price ($265 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($94 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

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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 January 8, 2026.

Fri 3/62:35 pmIAD - CNX

2 stops30h 50mEtihad Airways

Sun 3/158:50 amCNX - IAD

1 stop36h 15mEtihad Airways

Deal found 1/7

$895

Fri 3/133:35 pmIAD - CNX

2 stops32h 45mEtihad Airways

Sat 3/288:50 amCNX - IAD

1 stop35h 55mEtihad Airways

Deal found 1/8

$896

Fri 2/132:35 pmIAD - CNX

2 stops30h 50mEtihad Airways

Tue 2/178:50 amCNX - IAD

1 stop36h 15mEtihad Airways

Deal found 1/7

$922

Fri 3/62:35 pmIAD - CNX

2 stops32h 45mEtihad Airways

Thu 3/198:50 amCNX - IAD

1 stop36h 15mEtihad Airways

Deal found 1/7

$962

Tue 2/178:05 pmIAD - CNX

2 stops38h 15mMultiple Airlines

Tue 2/247:05 amCNX - IAD

2 stops68h 50mMultiple Airlines

Deal found 1/7

$973

Mon 3/28:05 pmIAD - CNX

2 stops32h 20mMultiple Airlines

Mon 4/139:10 pmCNX - IAD

2 stops29h 55mMultiple Airlines

Deal found 1/6

$1,000

Fri 3/610:00 pmIAD - CNX

1 stop35h 50mAir China

Mon 3/1611:05 pmCNX - IAD

1 stop31h 25mAir China

Deal found 1/7

$1,002

Tue 3/310:00 pmIAD - CNX

1 stop35h 50mAir China

Mon 3/1611:05 pmCNX - IAD

1 stop31h 25mAir China

Deal found 1/7

$1,012

Mon 10/126:30 amIAD - CNX

2 stops40h 50mChina Airlines

Mon 10/2611:25 amCNX - IAD

2 stops31h 03mChina Airlines

Deal found 1/6

$1,016

Wed 2/1110:40 amIAD - CNX

2 stops32h 40mMultiple Airlines

Sat 2/283:05 pmCNX - IAD

2 stops60h 50mMultiple Airlines

Deal found 1/8

$1,017

Tue 1/2012:23 pmIAD - CNX

2 stops46h 32mKorean Air

Tue 2/312:15 amCNX - IAD

1 stop21h 35mKorean Air

Deal found 1/7

$1,035

Wed 1/216:59 amDCA - CNX

2 stops27h 56mKorean Air

Tue 2/312:15 amCNX - DCA

2 stops25h 38mKorean Air

Deal found 1/7

$1,035

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 January 8, 2026.

Tue 1/2012:23 pmIAD - CNX

2 stops46h 32mKorean Air

Tue 2/312:15 amCNX - IAD

1 stop21h 35mKorean Air

Deal found 1/7

$1,035

Sun 3/18:05 pmIAD - CNX

2 stops29h 15mMultiple Airlines

Wed 3/117:45 pmCNX - IAD

2 stops32h 10mMultiple Airlines

Deal found 1/6

$1,040

Wed 1/216:00 amDCA - CNX

2 stops28h 55mDelta

Tue 2/312:15 amCNX - DCA

2 stops33h 56mDelta

Deal found 1/8

$1,080

Mon 3/25:00 pmDCA - CNX

2 stops29h 25mChina Airlines

Mon 4/1311:20 amCNX - DCA

2 stops43h 40mChina Airlines

Deal found 1/6

$1,108

Sun 3/299:00 pmIAD - CNX

2 stops29h 45mQatar Airways

Mon 4/138:00 pmCNX - IAD

2 stops31h 05mQatar Airways

Deal found 1/7

$1,116

Wed 1/216:00 amDCA - CNX

2 stops28h 55mKorean Air

Tue 2/312:15 amCNX - DCA

2 stops25h 38mKorean Air

Deal found 1/6

$1,035

Mon 3/29:59 amDCA - CNX

2 stops36h 36mMultiple Airlines

Mon 4/1311:35 amCNX - DCA

2 stops43h 25mMultiple Airlines

Deal found 1/8

$1,087

Tue 3/38:05 pmIAD - CNX

2 stops29h 40mQatar Airways

Thu 3/1910:10 amCNX - IAD

2 stops34h 10mQatar Airways

Deal found 1/7

$1,116

Thu 3/511:50 amIAD - CNX

1 stop23h 05mDelta

Mon 3/1612:15 amCNX - IAD

2 stops34h 34mDelta

Deal found 1/7

$1,125

Mon 3/96:46 pmBWI - CNX

2 stops28h 39mMultiple Airlines

Wed 3/1811:25 amCNX - BWI

2 stops36h 30mMultiple Airlines

Deal found 1/6

$1,089

Sun 3/89:05 pmIAD - CNX

2 stops34h 55mQatar Airways

Wed 3/187:45 pmCNX - IAD

2 stops32h 10mQatar Airways

Deal found 1/7

$1,116

Mon 3/211:50 amIAD - CNX

1 stop23h 05mDelta

Sun 3/812:15 amCNX - IAD

2 stops34h 33mDelta

Deal found 1/7

$1,125

Tue 2/39:59 amDCA - CNX

2 stops36h 36mMultiple Airlines

Tue 2/1011:50 amCNX - DCA

2 stops44h 10mMultiple Airlines

Deal found 1/5

$1,114

Sun 3/89:05 pmIAD - CNX

2 stops29h 40mQatar Airways

Tue 3/1710:10 amCNX - IAD

2 stops41h 45mQatar Airways

Deal found 1/7

$1,116

Mon 3/96:59 pmDCA - CNX

2 stops28h 36mMultiple Airlines

Wed 3/1811:50 amCNX - DCA

2 stops43h 10mMultiple Airlines

Deal found 1/6

$1,114

Fri 3/1311:40 amIAD - CNX

2 stops39h 05mQatar Airways

Sat 3/287:45 pmCNX - IAD

2 stops54h 55mQatar Airways

Deal found 1/8

$1,122

Fri 2/138:35 pmDCA - CNX

2 stops38h 20mDelta

Mon 2/1612:15 amCNX - DCA

2 stops26h 24mDelta

Deal found 1/7

$1,250

Thu 3/58:05 pmIAD - CNX

2 stops53h 40mQatar Airways

Thu 3/1912:10 pmCNX - IAD

2 stops32h 10mQatar Airways

Deal found 1/7

$1,122

Thu 2/59:59 amDCA - CNX

2 stops60h 36mMultiple Airlines

Tue 2/1011:50 amCNX - DCA

2 stops44h 10mMultiple Airlines

Deal found 1/7

$1,125

Sun 2/226:46 pmBWI - CNX

2 stops27h 49mMultiple Airlines

Sun 3/17:45 pmCNX - BWI

3 stops58h 01mMultiple Airlines

Deal found 1/8

$1,148

Tue 3/38:05 pmIAD - CNX

2 stops27h 15mQatar Airways

Sun 3/1512:10 pmCNX - IAD

2 stops39h 45mQatar Airways

Deal found 1/7

$1,156

Tue 2/176:46 pmBWI - CNX

2 stops27h 49mMultiple Airlines

Tue 2/2411:50 amCNX - BWI

2 stops41h 56mMultiple Airlines

Deal found 1/7

$1,168

Tue 2/179:59 amDCA - CNX

2 stops36h 36mMultiple Airlines

Tue 2/2411:50 amCNX - DCA

2 stops40h 16mMultiple Airlines

Deal found 1/7

$1,197

Sat 1/247:55 pmBWI - CNX

2 stops50h 30mMultiple Airlines

Sun 3/111:25 amCNX - BWI

2 stops42h 21mMultiple Airlines

Deal found 1/7

$1,265

Sat 1/2412:50 pmBWI - CNX

3 stops44h 10mQatar Airways

Sun 3/112:10 pmCNX - BWI

3 stops47h 49mQatar Airways

Deal found 1/7

$1,789

Tue 2/310:10 amBWI - CNX

2 stops36h 15mMultiple Airlines

Tue 2/1011:25 amCNX - BWI

2 stops30h 20mMultiple Airlines

Deal found 1/5

$1,456

Thu 2/53:40 pmBWI - CNX

2 stops30h 45mMultiple Airlines

Tue 2/1011:25 amCNX - BWI

2 stops38h 40mMultiple Airlines

Deal found 1/7

$1,484

Wed 1/218:20 amBWI - CNX

2 stops38h 05mMultiple Airlines

Wed 2/411:25 amCNX - BWI

2 stops30h 05mMultiple Airlines

Deal found 1/6

$1,681

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 January 8, 2026 and is based on user searches.

Mon 1/196:04 pmIAD - CNX

2 stops28h 21mMultiple Airlines

Mon 2/25:35 pmCNX - IAD

2 stops34h 51mMultiple Airlines

Deal found 1/7

$1,093

Tue 1/2012:23 pmIAD - CNX

2 stops46h 32mKorean Air

Tue 2/312:15 amCNX - IAD

1 stop21h 35mKorean Air

Deal found 1/7

$1,035

Tue 1/206:04 pmIAD - CNX

2 stops28h 31mEVA Air

Mon 1/2611:50 amCNX - IAD

2 stops40h 36mEVA Air

Deal found 1/8

$1,081

Wed 1/216:59 amDCA - CNX

2 stops27h 56mKorean Air

Tue 2/312:15 amCNX - DCA

2 stops25h 38mKorean Air

Deal found 1/7

$1,035

Wed 1/216:00 amDCA - CNX

2 stops28h 55mDelta

Tue 2/312:15 amCNX - DCA

2 stops33h 56mDelta

Deal found 1/8

$1,080

Mon 2/28:05 pmIAD - CNX

2 stops36h 55mQatar Airways

Thu 2/199:40 pmCNX - IAD

2 stops30h 15mQatar Airways

Deal found 1/8

$1,117

Tue 2/38:05 pmIAD - CNX

2 stops48h 40mMultiple Airlines

Tue 2/109:40 pmCNX - IAD

2 stops54h 15mMultiple Airlines

Deal found 1/5

$1,107

Tue 2/39:59 amDCA - CNX

2 stops36h 36mMultiple Airlines

Tue 2/1011:50 amCNX - DCA

2 stops44h 10mMultiple Airlines

Deal found 1/5

$1,114

Wed 2/1110:40 amIAD - CNX

2 stops34h 05mMultiple Airlines

Sat 2/289:40 pmCNX - IAD

2 stops54h 15mMultiple Airlines

Deal found 1/8

$1,084

Fri 2/132:35 pmIAD - CNX

2 stops30h 50mEtihad Airways

Tue 2/178:50 amCNX - IAD

1 stop36h 15mEtihad Airways

Deal found 1/7

$922

Sun 2/1510:40 amIAD - CNX

2 stops34h 45mQatar Airways

Mon 3/237:45 pmCNX - IAD

2 stops56h 10mQatar Airways

Deal found 1/8

$1,059

Tue 2/178:05 pmIAD - CNX

2 stops38h 15mMultiple Airlines

Tue 2/247:05 amCNX - IAD

2 stops68h 50mMultiple Airlines

Deal found 1/7

$973

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 January 8, 2026.

Sun 2/156:00 pmDCA - CNX

3 stops40h 55mMultiple Airlines

Deal found 1/6

$435

Mon 2/92:35 pmIAD - CNX

2 stops38h 15mMultiple Airlines

Deal found 1/6

$471

Sun 2/157:20 pmIAD - CNX

3 stops39h 35mMultiple Airlines

Deal found 1/6

$474

Wed 4/153:35 pmIAD - CNX

3 stops52h 55mMultiple Airlines

Deal found 1/7

$487

Tue 2/102:35 pmIAD - CNX

3 stops33h 55mMultiple Airlines

Deal found 1/6

$493

Sun 2/82:35 pmIAD - CNX

3 stops53h 40mMultiple Airlines

Deal found 1/6

$495

Thu 2/122:35 pmIAD - CNX

3 stops58h 10mMultiple Airlines

Deal found 1/6

$501

Tue 1/136:04 pmIAD - CNX

2 stops33h 51mSTARLUX Airlines

Deal found 1/7

$509

Tue 2/311:10 amIAD - CNX

2 stops36h 10mMultiple Airlines

Deal found 1/7

$514

Thu 2/127:19 pmBWI - CNX

3 stops48h 01mMultiple Airlines

Deal found 1/6

$515

Sat 2/72:35 pmIAD - CNX

3 stops52h 45mMultiple Airlines

Deal found 1/8

$524

Tue 1/139:59 amDCA - CNX

2 stops41h 56mMultiple Airlines

Deal found 1/6

$557

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

Tue 1/20

12:23 pm-10:55 pm

2 stops46h 32m

Chiang Mai

Tue 2/3

12:15 am-9:50 am

1 stop21h 35m

$1,035

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 1/21

6:00 am-10:55 pm

2 stops28h 55m

Chiang Mai

Tue 2/3

12:15 am-1:53 pm

2 stops25h 38m

$1,035

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/1

8:05 pm-1:20 pm

2 stops29h 15m

Chiang Mai

Wed 3/11

7:45 pm-4:55 pm

2 stops32h 10m

$1,040

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Wed 1/21

6:00 am-10:55 pm

2 stops28h 55m

Chiang Mai

Tue 2/3

12:15 am-10:11 pm

2 stops33h 56m

$1,080

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/2

9:59 am-10:35 am

2 stops36h 36m

Chiang Mai

Mon 4/13

11:35 am-8:00 pm

2 stops43h 25m

$1,087

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Mon 3/9

6:46 pm-10:25 am

2 stops28h 39m

Chiang Mai

Wed 3/18

11:25 am-12:55 pm

2 stops36h 30m

$1,089

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/2

5:00 pm-10:25 am

2 stops29h 25m

Chiang Mai

Mon 4/13

11:20 am-8:00 pm

2 stops43h 40m

$1,108

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 2/3

9:59 am-10:35 am

2 stops36h 36m

Chiang Mai

Tue 2/10

11:50 am-8:00 pm

2 stops44h 10m

$1,114

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 3/9

6:59 pm-10:35 am

2 stops28h 36m

Chiang Mai

Wed 3/18

11:50 am-8:00 pm

2 stops43h 10m

$1,114

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/29

9:00 pm-1:45 pm

2 stops29h 45m

Chiang Mai

Mon 4/13

8:00 pm-4:05 pm

2 stops31h 05m

$1,116

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 56 results

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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 January.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Justfly.com	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 Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Chiang Mai

See what other customers who have flown with Korean Air and Delta from Washington, D.C. to Chiang Mai have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,188 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Korean Air

8.4

Very good

1,188 reviews

Korean Air

8.4

Very good

1,188 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Delta

7.9

Good

8,029 reviews

Korean Air

8.4

Very good

1,188 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

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. 2 airlines have flights to Chiang Mai from Washington, D.C. on a regular basis.
How long is the flight from Washington, D.C. to Chiang Mai?
For as low as $1,080, Korean Air can have you in Chiang Mai from Washington, D.C. in 28h 55m. Airlines will cover a distance of 8441 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Washington, D.C. to Chiang Mai round-trip?
According to our current data, Korean Air ($673), and Delta ($798) offers the cheapest pricing from Washington, D.C. to Chiang Mai. Korean Air is 53% cheaper than the average price of flights available within the next 90 days to this destination.
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. Dulles Intl - Chiang Mai, Washington, D.C. Reagan-National - 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Washington, D.C. to Chiang Mai

Airline	Cheapest	Average	Flexibility	On-time
Korean Air	Cheapest$743	Average$1,584	FlexibilityNo cancel fee	On-time81%
Delta	Cheapest$798	Average$1,135	FlexibilityNo cancel fee	On-timeN/A

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$435+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.

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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 January 8, 2026.

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 January 8, 2026.

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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 January.

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

Reviews of airlines servicing Chiang Mai

See what other customers who have flown with Korean Air and Delta from Washington, D.C. to Chiang Mai have to say. You can also see how each airline compares 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.?

How long is the flight from Washington, D.C. to Chiang Mai?

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

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?

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

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Top 2 airlines flying from Washington, D.C. to Chiang Mai

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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 January 8, 2026.