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Cheap flights from Chiang Mai to Washington, D.C. from ฿20,462

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — WAS
19 Aug — 26 Aug1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Mai to Washington, D.C.
Explore the most affordable flight options available from Chiang Mai to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 July 2026.

Thu 20/811:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Sun 6/909:30
DCA
-
CNX
2 stops37h 55m
Multiple Airlines
Deal found 16/7฿39,546
Thu 20/811:35
CNX
-
IAD
2 stops29h 05m
Multiple Airlines
Sun 6/917:47
IAD
-
CNX
2 stops29h 38m
Multiple Airlines
Deal found 19/7฿39,714
Thu 20/811:35
CNX
-
BWI
2 stops29h 55m
Multiple Airlines
Sun 6/919:15
BWI
-
CNX
2 stops28h 10m
Multiple Airlines
Deal found 19/7฿39,714
Wed 2/911:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Wed 9/918:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 19/7฿39,882
Wed 2/911:20
CNX
-
BWI
2 stops30h 15m
Multiple Airlines
Wed 9/915:15
BWI
-
CNX
2 stops32h 05m
Multiple Airlines
Deal found 19/7฿41,764
Wed 2/919:25
CNX
-
IAD
2 stops26h 40m
Multiple Airlines
Wed 9/921:00
IAD
-
CNX
2 stops25h 20m
Multiple Airlines
Deal found 19/7฿43,746
Sun 25/1000:15
CNX
-
IAD
1 stop21h 35m
Korean Air
Fri 30/1012:50
IAD
-
CNX
1 stop23h 05m
Korean Air
Deal found 16/7฿45,493
Wed 2/920:00
CNX
-
IAD
2 stops55h 45m
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 9/918:35
IAD
-
CNX
3 stops32h 10m
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 19/7฿48,148
Mon 26/1012:10
CNX
-
IAD
2 stops39h 45m
Qatar Airways
Fri 30/1021:05
IAD
-
CNX
2 stops27h 15m
Qatar Airways
Deal found 16/7฿49,257
Wed 28/1000:15
CNX
-
DCA
2 stops34h 30m
Korean Air
Mon 2/1109:00
DCA
-
CNX
2 stops49h 55m
Korean Air
Deal found 16/7฿52,281
Mon 2/1100:15
CNX
-
BWI
2 stops24h 49m
Korean Air
Sat 7/1118:10
BWI
-
CNX
2 stops40h 45m
Korean Air
Deal found 16/7฿60,143
Fri 23/1021:45
CNX
-
BWI
2 stops32h 31m
Korean Air
Tue 27/1019:40
BWI
-
CNX
2 stops40h 15m
Korean Air
Deal found 17/7฿67,434

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

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Washington, D.C. (WAS). 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 20 July 2026.

Round-trip from

฿39,546

One-way from

฿20,462
20/8-6/9
  • 20/8-6/9
  • 4 total stops
  • 81h 20m total
  • Chiang Mai to Washington, D.C.
Search Deals
24/9
  • 24/9
  • 1 total stop
  • 24h 05m total
  • Chiang Mai to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Mai to Washington, D.C. 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 20 July 2026.
Use the filters below to find and compare flights from Chiang Mai to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Thu 20/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Sun 6/9

09:30-10:25

2 stops37h 55m

฿39,546

Chiang MaiBaltimore

CNX - BWI

CNXBWI

Chiang Mai

Thu 20/8

11:35-06:30

2 stops29h 55m

Baltimore/Washington

Sun 6/9

19:15-10:25

2 stops28h 10m

฿39,714

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 2/9

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Wed 9/9

18:59-10:25

2 stops28h 26m

฿39,882

Chiang MaiBaltimore

CNX - BWI

CNXBWI

Chiang Mai

Wed 2/9

11:20-06:35

2 stops30h 15m

Baltimore/Washington

Wed 9/9

15:15-10:20

2 stops32h 05m

฿41,764

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 2/9

19:25-11:05

2 stops26h 40m

Washington, D.C. Dulles Intl

Wed 9/9

21:00-09:20

2 stops25h 20m

฿43,746

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 20/8

11:35-16:44

2 stops40h 09m

Washington, D.C. Dulles Intl

Sat 5/9

01:15-10:25

1 stop22h 10m

฿44,956
Fastest return journey

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Sun 25/10

00:15-10:50

1 stop21h 35m

Washington, D.C. Dulles Intl

Fri 30/10

12:50-22:55

1 stop23h 05m

฿45,493

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 2/9

20:00-16:45

2 stops55h 45m

Washington, D.C. Dulles Intl

Wed 9/9

18:35-13:45

3 stops32h 10m

฿48,148

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Mon 26/10

12:10-16:55

2 stops39h 45m

Washington, D.C. Dulles Intl

Fri 30/10

21:05-11:20

2 stops27h 15m

฿49,257

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 28/10

00:15-23:45

2 stops34h 30m

Washington, D.C. Reagan-National

Mon 2/11

09:00-22:55

2 stops49h 55m

฿52,281

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Chiang Mai to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to Washington, D.C.

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

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated 20 July 2026.
Read reviews from past customers who have flown with เดลต้า from Chiang Mai to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
เดลต้า
7.8
Good
8,478 reviews
Check prices

Boarding

8.1

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
เดลต้า
7.8
Good
8,478 reviews
เดลต้า
7.8
Good
8,478 reviews
Check prices

Boarding

8.1

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Related info for your journey

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

    Chiang Mai (CNX), located 3.1 km from the city centre, is the airport you fly out of when you book flights from Chiang Mai to Washington, D.C.. 0 airlines have flights from Chiang Mai to Washington, D.C. on a regular basis. Booking flights from Chiang Mai to Washington, D.C. should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. per day.

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

    For as low as ฿45,493, Korean Air can have you in Washington, D.C. from Chiang Mai in 21h 35m. Airlines will cover a distance of 13576 km. This flight may include one or multiple stops.

  • What are the most popular routes from Chiang Mai to Washington, D.C.?

    When deciding which route to take from Chiang Mai to Washington, D.C., consider Chiang Mai - Baltimore/Washington, Chiang Mai - Washington, D.C. Reagan-National or Chiang Mai - Washington, D.C. Dulles Intl, as they are the most popular.

  • Can I find deals for flights from Chiang Mai to Washington, D.C. that include hotel bookings?

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

  • How can I find direct flights from Chiang Mai to Washington, D.C.?

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

  • Can I find deals for business class flights from Chiang Mai to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Chiang Mai to Washington, D.C. 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

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

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

Fly with Cheapflights

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How does Cheapflights help users find flights from Chiang Mai to Washington, D.C.?

Deals for Chiang Mai to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Washington, D.C.?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Chiang Mai.

Can Cheapflights find flights from Chiang Mai to Washington, D.C. with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Chiang Mai to Washington, D.C., users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Chiang Mai to Washington, D.C. become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Chiang Mai today and book when prices fit your budget.

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