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$488+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CNX
Nov 16 — Nov 231
Sun 11/16
Sun 11/23
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 October 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$948
(Trip.com)

One-way from

$488
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$1,263
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. 13% potential increase in price ($227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($89 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 17, 2025.

This oojo deal was found by Cheapflights users on 10/16. 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.
Sat 11/86:13 pmIAD - CNX
2 stops34h 22mChina Airlines
Thu 11/1311:25 amCNX - IAD
2 stops30h 58mChina Airlines
Deal found 10/16$1,025
This oojo deal was found by Cheapflights users on 10/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:38 amBWI - CNX
2 stops38h 47mChina Airlines
Mon 12/15:35 pmCNX - BWI
2 stops24h 04mChina Airlines
Deal found 10/15$1,044
This oojo deal was found by Cheapflights users on 10/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:13 pmIAD - CNX
2 stops28h 12mChina Airlines
Mon 12/15:35 pmCNX - IAD
2 stops35h 01mChina Airlines
Deal found 10/15$1,045
This oojo deal was found by Cheapflights users on 10/16. 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.
Sat 11/89:59 amDCA - CNX
2 stops42h 36mChina Airlines
Thu 11/1311:25 amCNX - DCA
2 stops44h 35mChina Airlines
Deal found 10/16$1,087
This oojo deal was found by Cheapflights users on 10/16. 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.
Sat 11/87:38 amBWI - CNX
2 stops44h 57mChina Airlines
Thu 11/1311:25 amCNX - BWI
2 stops30h 53mChina Airlines
Deal found 10/16$1,096
This SmartFares deal was found by Cheapflights users on 10/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:13 pmIAD - CNX
2 stops28h 12mMultiple Airlines
Mon 12/15:35 pmCNX - IAD
2 stops24h 39mMultiple Airlines
Deal found 10/15$1,148
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:00 amIAD - CNX
2 stops28h 55mDelta
Sat 11/1512:15 amCNX - IAD
2 stops36h 39mDelta
Deal found 10/14$1,158
This oojo deal was found by Cheapflights users on 10/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:59 amDCA - CNX
2 stops36h 36mEVA Air
Mon 12/111:50 amCNX - DCA
2 stops44h 10mEVA Air
Deal found 10/15$1,161
This oojo deal was found by Cheapflights users on 10/14. 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 11/97:43 amIAD - CNX
2 stops38h 52mEVA Air
Sun 11/1611:50 amCNX - IAD
2 stops30h 33mEVA Air
Deal found 10/14$1,165
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Sun 11/3010:40 amIAD - CNX
2 stops24h 55mMultiple Airlines
Sun 12/74:40 pmCNX - IAD
3 stops34h 50mMultiple Airlines
Deal found 10/16$1,171
This Ovago deal was found by Cheapflights users on 10/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:05 pmIAD - CNX
2 stops29h 15mMultiple Airlines
Mon 2/239:40 pmCNX - IAD
2 stops30h 15mMultiple Airlines
Deal found 10/15$1,183
This Delta deal was found by Cheapflights users on 10/16. 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.
Sat 11/85:52 pmIAD - CNX
2 stops41h 03mDelta
Wed 11/1212:15 amCNX - IAD
2 stops28h 08mDelta
Deal found 10/16$1,253

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 October 17, 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

Tue 11/18

7:38 am-10:25 am

2 stops38h 47m

Chiang Mai

Mon 12/1

5:35 pm-5:39 am

2 stops24h 04m

$1,044

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 1/11

8:05 pm-9:00 pm

2 stops36h 55m

Chiang Mai

Sun 5/3

2:35 pm-8:40 am

2 stops29h 05m

$1,064

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 11/8

9:59 am-4:35 pm

2 stops42h 36m

Chiang Mai

Thu 11/13

11:25 am-8:00 pm

2 stops44h 35m

$1,087

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Sat 11/8

7:38 am-4:35 pm

2 stops44h 57m

Chiang Mai

Thu 11/13

11:25 am-6:18 am

2 stops30h 53m

$1,096

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/9

6:00 am-10:55 pm

2 stops28h 55m

Chiang Mai

Sat 11/15

12:15 am-12:54 am

2 stops36h 39m

$1,158

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sun 11/9

7:43 am-10:35 am

2 stops38h 52m

Chiang Mai

Sun 11/16

11:50 am-6:23 am

2 stops30h 33m

$1,165

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Sat 11/8

6:45 pm-10:55 pm

2 stops40h 10m

Chiang Mai

Wed 11/12

12:15 am-2:37 pm

2 stops26h 22m

$1,253

BaltimoreChiang Mai

BWI - CNX

BWICNX

Baltimore/Washington

Tue 1/6

7:00 pm-10:35 am

2 stops27h 35m

Chiang Mai

Fri 1/23

11:50 am-6:14 pm

2 stops42h 24m

$1,296

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Thu 1/8

9:10 pm-6:05 am

1 stop20h 55m

Chiang Mai

Sat 1/24

8:50 am-3:30 pm

1 stop42h 40m

$1,330

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sat 11/29

9:10 pm-6:05 am

1 stop20h 55m

Chiang Mai

Sat 12/6

8:50 am-3:30 pm

1 stop42h 40m

$1,337

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 52 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

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 October 17, 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 October 17, 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
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

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
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

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 $1,158, China Airlines can have you in Chiang Mai from Washington, D.C. in 28h 55m. 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 ($754), and Delta ($798) offers the cheapest pricing from Washington, D.C. to Chiang Mai. Korean Air is 50% 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

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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 October 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$754Average$1,729FlexibilityNo cancel feeOn-time81%
DeltaCheapest$798Average$1,135FlexibilityNo cancel feeOn-timeN/A

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