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Cheap flights from Chiang Mai to Washington, D.C. Dulles Intl Airport from ฿24,665

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — IAD
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Mai to Dulles Intl
Explore the most affordable flight options available from Chiang Mai to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2026.

Wed 4/1100:15
CNX
-
IAD
1 stop21h 35m
Korean Air
Mon 9/1111:50
IAD
-
CNX
1 stop23h 05m
Korean Air
Deal found 28/6฿37,065
Thu 5/1119:45
CNX
-
IAD
2 stops32h 10m
Qatar Airways
Mon 9/1120:05
IAD
-
CNX
2 stops25h 20m
Qatar Airways
Deal found 28/6฿44,764
Thu 2/709:45
CNX
-
IAD
2 stops41h 00m
Multiple Airlines
Wed 8/701:50
IAD
-
CNX
1 stop21h 35m
Multiple Airlines
Deal found 28/6฿46,398

Find flight deals from Chiang Mai to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Dulles Intl (IAD). 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 2 July 2026.

Round-trip from

฿37,065

One-way from

฿24,665
Korean Air
  • Korean Air
  • 4/11-9/11
  • 2 total stops
  • 44h 40m total
  • Chiang Mai to Washington, D.C.
Search Deals
26/11
  • 26/11
  • 2 total stops
  • 51h 00m total
  • Chiang Mai to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Mai to Dulles Intl 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 17,341 searches. Data last updated 2 July 2026.
Use the filters below to find and compare flights from Chiang Mai to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 5/11

19:45-15:55

2 stops32h 10m

Washington, D.C. Dulles Intl

Mon 9/11

20:05-09:25

2 stops25h 20m

฿44,764
Fastest return journey

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 4/11

00:15-09:50

1 stop21h 35m

Washington, D.C. Dulles Intl

Mon 9/11

11:50-22:55

1 stop23h 05m

฿45,631

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Fri 14/8

20:00-16:45

2 stops55h 45m

Washington, D.C. Dulles Intl

Fri 21/8

20:20-13:45

2 stops30h 25m

฿189,556

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 15/9

10:10-22:00

2 stops46h 50m

Washington, D.C. Dulles Intl

Mon 14/12

23:55-09:25

2 stops45h 30m

฿196,423
Cheapest one-way

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 26/11

00:45-15:45

2 stops51h 00m

฿24,665

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sat 25/7

22:55-11:35

2 stops47h 40m

฿28,565

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sat 15/8

13:15-09:45

2 stops31h 30m

฿32,265

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Fri 27/11

08:50-09:05

1 stop36h 15m

฿39,298
Fastest single journey

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sat 25/7

21:45-11:15

1 stop24h 30m

฿42,031

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sat 15/8

21:45-11:15

1 stop24h 30m

฿47,297

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Sorted by cheapest first

Best time to book a flight from Chiang Mai to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Chiang Mai with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Dulles Intl. 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 from for flights from Chiang Mai to Washington, D.C. Dulles Intl?

    Located just 3.1 km from the city centre, Chiang Mai is the airport most travellers will use when flying to Washington, D.C. Dulles Intl from Chiang Mai. Booking flights from Chiang Mai (CNX) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Chiang Mai to Washington, D.C. Dulles Intl Airport?

    Airlines like Korean Air and Qatar Airways fly from Chiang Mai to Washington, D.C. Dulles Intl Airport in about 21h 35m. The time it takes to get you to your destination can typically vary by up to 10h 35m. Airlines will cover a distance of 13576 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Chiang Mai to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Chiang Mai to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Mai to Dulles Intl?

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

  • Can I find deals for business class flights from Chiang Mai to Dulles Intl?

    Yes. Cheapflights offers flight deals from Chiang Mai to Dulles Intl 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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Alternative routes for Chiang Mai to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Baltimore flights
Chiang Mai to Reagan-National flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chiang Mai to Dulles Intl?

Cheapflights helps you search for flights from Chiang Mai to Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Dulles Intl.

Can Cheapflights find flights from Chiang Mai to Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Chiang Mai to Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Chiang Mai to Dulles Intl become cheaper?

Yes! Start tracking prices for Chiang Mai to Dulles Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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