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$503+ Cheap flights from Chiang Mai (CNX) to Washington

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Chiang Mai to Washington

Keep the following information in mind while searching for Chiang Mai to Washington flight deals. Data was last updated September 11, 2025.

Round-trip from

$853
(oojo)

One-way from

$503
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,083
From Chiang Mai to Washington
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One-way flight from Chiang Mai to Washington
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Highest demand for flights based on searches. 34% potential increase in price ($553 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($106 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 Chiang Mai to Washington

Cheapest flights from Chiang Mai to Washington
Explore the most affordable flight options available from Chiang Mai to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This oojo deal was found by Cheapflights users on 9/10. 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.
Mon 11/105:35 pmCNX - SEA
1 stop15h 35mChina Airlines
Thu 12/412:10 amSEA - CNX
1 stop19h 15mChina Airlines
Deal found 9/10$857
This FlightHub deal was found by Cheapflights users on 9/11. 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.
Mon 11/1012:05 pmCNX - SEA
2 stops41h 26mMultiple Airlines
Fri 12/58:00 pmSEA - CNX
2 stops22h 25mMultiple Airlines
Deal found 9/11$909
This FlightHub deal was found by Cheapflights users on 9/10. 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.
Mon 11/1010:10 amCNX - SEA
2 stops23h 00mEVA Air
Thu 12/412:10 amSEA - CNX
1 stop19h 25mEVA Air
Deal found 9/10$911
This Korean Air deal was found by Cheapflights users on 9/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/912:15 amCNX - SEA
1 stop23h 45mKorean Air
Fri 12/511:00 amSEA - CNX
1 stop20h 55mKorean Air
Deal found 9/11$927
This Trip.com deal was found by Cheapflights users on 9/10. 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.
Wed 11/1911:25 amCNX - PDX
2 stops27h 12mMultiple Airlines
Wed 12/35:50 pmPDX - CNX
2 stops25h 35mMultiple Airlines
Deal found 9/10$1,021
This Delta deal was found by Cheapflights users on 9/10. 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 11/1812:15 amCNX - PDX
2 stops37h 26mDelta
Wed 12/32:23 pmPDX - CNX
2 stops41h 32mDelta
Deal found 9/10$1,121

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chiang Mai to Washington 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 11, 2025.
Use the filters below to find and compare flights from Chiang Mai to Washington that are best for you.

Fly from

Chiang Mai

Fly to

Washington

Route

Depart

Return

Price

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 11/10

5:35 pm-6:10 pm

1 stop15h 35m

Seattle/Tacoma Intl

Thu 12/4

12:10 am-10:25 am

1 stop19h 15m

$853

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 11/10

10:10 am-6:10 pm

2 stops23h 00m

Seattle/Tacoma Intl

Thu 12/4

12:10 am-10:35 am

1 stop19h 25m

$907

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 11/10

12:05 pm-2:31 pm

2 stops41h 26m

Seattle/Tacoma Intl

Fri 12/5

8:00 pm-9:25 am

2 stops22h 25m

$909

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 11/9

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Fri 12/5

11:00 am-10:55 pm

1 stop20h 55m

$927

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 11/19

11:25 am-11:37 pm

2 stops27h 12m

Portland

Wed 12/3

5:50 pm-10:25 am

2 stops25h 35m

$1,021

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 11/9

12:15 am-4:22 pm

2 stops31h 07m

Seattle/Tacoma Intl

Fri 12/5

11:00 am-10:55 pm

1 stop20h 55m

$1,046

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Tue 11/18

12:15 am-10:41 pm

2 stops37h 26m

Portland

Wed 12/3

2:23 pm-10:55 pm

2 stops41h 32m

$1,121

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 9/22

10:25 pm-7:15 pm

2 stops58h 50m

$503

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Fri 1/23

4:35 pm-9:15 am

2 stops31h 40m

$545

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 9/22

11:15 pm-10:40 am

1 stop25h 25m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 15 results
1
2

Best time to book a flight from Chiang Mai to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Chiang Mai 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 Chiang Mai to Washington
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Korean Air and Asiana Airlines from Chiang Mai to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

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

    If you book a flight to Washington from Chiang Mai, you will be flying from Chiang Mai, which is the city’s only airport. Chiang Mai (CNX) is located 1.9 mi from the center of Chiang Mai.

  • How long is the flight from Chiang Mai to State of Washington?

    Airlines like China Airlines, EVA Air, and Delta fly from Chiang Mai to State of Washington in about 15h 35m. The time it takes to get you to your destination can typically vary by up to 21h 51m. Airlines will cover a distance of 7190 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

    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.

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

    Yes. Cheapflights offers flight deals from Chiang Mai to Washington 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 Chiang Mai to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Chiang Mai to State of Washington (average of $238). Flying from Chiang Mai to State of Washington in June is currently the most expensive (average of $388). 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

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Alternative routes for Chiang Mai to Washington

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Top 2 airlines flying from Chiang Mai to Washington

Discover the top 2 airlines that operate flights from Chiang Mai to Washington. 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$622Average$658FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$802Average$833FlexibilityNo cancel feeOn-time81%

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