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Chiang Mai

$514+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CNX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$941
(Booking.com)

One-way from

$514
(FlightHub)

Popular in

April

Cheapest in

June

Average price

$1,207
From Washington, D.C. (WAS) to Chiang Mai
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One-way flight from Washington, D.C. (WAS) to Chiang Mai
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Highest demand for flights based on searches. 11% potential increase in price ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($86 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/149:00 pmIAD - CNX
2 stops32h 15mMultiple Airlines
Tue 10/214:55 pmCNX - IAD
2 stops26h 45mMultiple Airlines
Deal found 9/14$989
This FlightHub deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:00 pmIAD - CNX
2 stops25h 20mMultiple Airlines
Thu 9/258:00 pmCNX - IAD
2 stops30h 40mMultiple Airlines
Deal found 9/15$1,008
This Gotogate deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:05 pmIAD - CNX
2 stops27h 25mMultiple Airlines
Tue 11/412:10 pmCNX - IAD
2 stops32h 10mMultiple Airlines
Deal found 9/13$1,015
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:05 pmIAD - CNX
2 stops38h 15mMultiple Airlines
Thu 11/2010:50 pmCNX - IAD
2 stops53h 05mMultiple Airlines
Deal found 9/14$1,022
This Travelocity deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:00 pmIAD - CNX
2 stops32h 15mMultiple Airlines
Wed 10/299:05 pmCNX - IAD
2 stops30h 50mMultiple Airlines
Deal found 9/13$1,051
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/129:00 pmIAD - CNX
2 stops25h 20mMultiple Airlines
Sun 10/199:10 pmCNX - IAD
2 stops53h 30mMultiple Airlines
Deal found 9/14$1,054
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:35 amBWI - CNX
2 stops31h 05mMultiple Airlines
Sun 11/27:05 amCNX - BWI
3 stops35h 30mMultiple Airlines
Deal found 9/14$1,072
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:35 amIAD - CNX
2 stops27h 20mDelta
Tue 10/2812:15 amCNX - IAD
2 stops34h 05mDelta
Deal found 9/13$1,079
This FlightHub deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:05 pmIAD - CNX
2 stops34h 55mMultiple Airlines
Sun 11/1610:10 amCNX - IAD
2 stops41h 45mMultiple Airlines
Deal found 9/12$1,089
This IEagle deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:59 pmDCA - CNX
2 stops52h 26mMultiple Airlines
Tue 10/2111:35 amCNX - DCA
2 stops41h 24mMultiple Airlines
Deal found 9/14$1,105
This SmartFares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:00 pmIAD - CNX
2 stops25h 25mMultiple Airlines
Sun 11/29:25 amCNX - IAD
2 stops42h 30mMultiple Airlines
Deal found 9/14$1,111
This Ovago deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:05 pmIAD - CNX
2 stops27h 15mMultiple Airlines
Wed 11/52:10 pmCNX - IAD
2 stops37h 45mMultiple Airlines
Deal found 9/14$1,116

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Chiang Mai that are best for you.

Fly from

Washington, D.C.

Fly to

Chiang Mai

Route

Depart

Return

Price

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Fri 10/24

5:35 am-11:40 pm

2 stops31h 05m

Chiang Mai

Sun 11/2

7:05 am-7:35 am

3 stops35h 30m

$1,072

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Mon 3/9

6:19 am-10:55 pm

2 stops29h 36m

Chiang Mai

Wed 3/11

12:15 am-3:53 pm

2 stops26h 38m

$1,079

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 2/15

7:59 pm-10:55 pm

2 stops38h 56m

Chiang Mai

Sun 3/22

12:15 am-11:16 pm

2 stops34h 01m

$1,084

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/1

4:00 pm-10:55 pm

2 stops42h 55m

Chiang Mai

Tue 3/10

12:15 am-11:16 pm

2 stops34h 01m

$1,085

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Mon 3/2

6:55 pm-10:35 am

2 stops27h 40m

Chiang Mai

Mon 3/23

11:50 am-6:02 pm

2 stops41h 12m

$1,100

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 10/14

6:59 pm-10:25 am

2 stops52h 26m

Chiang Mai

Tue 10/21

11:35 am-5:59 pm

2 stops41h 24m

$1,105

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 3/5

8:05 pm-7:00 pm

2 stops34h 55m

Chiang Mai

Mon 3/9

7:45 pm-4:55 pm

2 stops32h 10m

$1,110

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Fri 2/27

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Thu 3/19

12:15 am-7:12 pm

2 stops29h 57m

$1,114

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 3/1

8:05 pm-9:25 am

2 stops49h 20m

Chiang Mai

Wed 3/25

7:45 pm-4:55 pm

2 stops32h 10m

$1,114

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 3/5

11:50 am-10:55 pm

1 stop23h 05m

Chiang Mai

Sun 3/8

12:15 am-11:16 pm

2 stops34h 01m

$1,124

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 41 results
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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?

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 September 15, 2025.

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.

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated September 15, 2025.
See what other customers who have flown with Korean Air 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
1,139 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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.

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.?

    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 $1,110, Delta can have you in Chiang Mai from Washington, D.C. in 27h 15m. Airlines will cover a distance of 8436 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 ($743), and Delta ($798) offers the cheapest pricing from Washington, D.C. to Chiang Mai. Korean Air is 52% 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.

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

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Chiang Mai (average of $975). Flying from Washington, D.C. to Chiang Mai in June is currently the most expensive (average of $1,562). 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

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

Discover the top 2 airlines that operate flights from Washington, D.C. to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$743Average$1,729FlexibilityNo cancel feeOn-time81%
DeltaCheapest$798Average$1,143FlexibilityNo cancel feeOn-timeN/A

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