Find flights
When to book
FAQs
Thailand (ภาษาไทย)
ภาษาไทย

Cheap flights from Chiang Mai to Washington, D.C. Dulles Intl Airport from ฿19,576

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — IAD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap 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 18 September 2025.

Round-trip from

฿35,566

One-way from

฿19,576
เดลต้า
  • เดลต้า
  • 3/3-15/3
  • 4 total stops
  • 64h 15m total
  • Chiang Mai to Washington, D.C.
Search Deals
5/12
  • 5/12
  • 3 total stops
  • 31h 40m total
  • Chiang Mai to Washington, D.C.
Search Deals

Find flight deals from Chiang Mai to Dulles Intl

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 18 September 2025.

Mon 22/923:15CNX - IAD
2 stops35h 23mเดลต้า
Tue 21/1006:15IAD - CNX
2 stops28h 40mเดลต้า
Deal found 16/9฿35,471
Mon 6/1023:15CNX - IAD
2 stops47h 11mเดลต้า
Sun 19/1006:00IAD - CNX
2 stops28h 55mเดลต้า
Deal found 18/9฿35,566
Thu 18/1223:05CNX - IAD
1 stop31h 25mAir China
Fri 2/122:00IAD - CNX
1 stop35h 50mAir China
Deal found 16/9฿35,693
Mon 6/1023:15CNX - IAD
1 stop22h 40mเดลต้า
Fri 17/1007:05IAD - CNX
2 stops27h 50mเดลต้า
Deal found 18/9฿38,866
Tue 7/1023:15CNX - IAD
2 stops36h 25mเดลต้า
Fri 17/1007:05IAD - CNX
2 stops27h 50mเดลต้า
Deal found 18/9฿39,056
Mon 8/1200:15CNX - IAD
2 stops36h 11mเดลต้า
Tue 6/107:00IAD - CNX
2 stops27h 55mเดลต้า
Deal found 16/9฿39,088
Mon 8/1200:15CNX - IAD
1 stop21h 35mMultiple Airlines
Tue 30/1212:20IAD - CNX
2 stops44h 40mMultiple Airlines
Deal found 16/9฿41,118
Wed 17/1200:15CNX - IAD
1 stop21h 35mเดลต้า
Fri 2/107:05IAD - CNX
2 stops27h 50mเดลต้า
Deal found 16/9฿42,673
Thu 9/1012:00CNX - IAD
2 stops31h 40mMultiple Airlines
Thu 16/1021:00IAD - CNX
2 stops39h 00mMultiple Airlines
Deal found 18/9฿42,768

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 18 September 2025.
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

Chiang Mai

Fly to

Dulles Intl

Route

Depart

Return

Price

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 6/10

23:15-23:18

2 stops35h 03m

Washington, D.C. Dulles Intl

Sat 18/10

17:52-21:55

2 stops41h 03m

฿35,566

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 18/12

23:05-18:30

1 stop31h 25m

Washington, D.C. Dulles Intl

Fri 2/1

22:00-21:50

1 stop35h 50m

฿35,693

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 6/10

23:15-10:55

1 stop22h 40m

Washington, D.C. Dulles Intl

Wed 15/10

06:00-21:55

2 stops28h 55m

฿38,866

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 7/10

23:15-00:40

2 stops36h 25m

Washington, D.C. Dulles Intl

Fri 17/10

07:05-21:55

2 stops27h 50m

฿39,056

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 8/12

00:15-00:26

2 stops36h 11m

Washington, D.C. Dulles Intl

Tue 6/1

07:00-22:55

2 stops27h 55m

฿39,088

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 3/3

00:15-23:16

2 stops35h 01m

Washington, D.C. Dulles Intl

Sun 15/3

12:50-22:55

1 stop23h 05m

฿39,088

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 17/2

00:15-09:50

1 stop21h 35m

Washington, D.C. Dulles Intl

Sun 22/2

11:50-22:55

1 stop23h 05m

฿39,310

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 17/2

00:15-14:51

2 stops50h 36m

Washington, D.C. Dulles Intl

Sun 22/2

11:00-22:55

2 stops47h 55m

฿39,374

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 4/12

00:15-09:50

1 stop21h 35m

฿21,321

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sun 7/12

10:35-06:15

3 stops55h 40m

฿21,606

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 14 results
1
2

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 เดลต้า and Air China fly from Chiang Mai to Washington, D.C. Dulles Intl Airport in about 31h 25m. The time it takes to get you to your destination can typically vary by up to 3h 55m. 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

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

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.

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.