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$442+ Cheap flights from Chiang Mai (CNX) to Seattle (SEA)

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEA
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Chiang Mai to Seattle

Cheapest flights from Chiang Mai to Seattle
Explore the most affordable flight options available from Chiang Mai to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This oojo deal was found by Cheapflights users on 10/27. 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 10/27$813
This FlightHub deal was found by Cheapflights users on 10/26. 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 11/107:45 pmCNX - SEA
2 stops37h 25mEVA Air
Thu 12/412:10 amSEA - CNX
1 stop19h 25mEVA Air
Deal found 10/26$822
This FlightHub deal was found by Cheapflights users on 10/26. 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 11/104:45 pmCNX - SEA
2 stops31h 46mMultiple Airlines
Fri 12/58:00 pmSEA - CNX
2 stops22h 25mMultiple Airlines
Deal found 10/26$908
This Korean Air deal was found by Cheapflights users on 10/26. 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 10/26$1,095

Cheap flight deals from Chiang Mai to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Seattle (SEA). 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 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$768
(oojo)

One-way from

$442
(Trip.com)

Popular in

January

Cheapest in

April

Average price

$825
Provider with most accurate pricing for Chiang Mai-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Chiang Mai-Seattle/Tacoma Intl flights.
Search Deals
From Chiang Mai to Seattle/Tacoma Intl
Search Deals
One-way flight from Chiang Mai to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Chiang Mai to Seattle 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 28, 2025.
Use the filters below to find and compare flights from Chiang Mai to Seattle that are best for you.

Fly from

Chiang Mai

Fly to

Seattle

Route

Depart

Return

Price

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 2/5

11:25 am-6:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Mon 3/2

12:10 am-10:25 am

1 stop19h 15m

$795

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 2/5

11:25 am-6:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Mon 2/23

12:10 am-10:25 am

1 stop19h 15m

$795

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

$813

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 2/26

11:50 am-5:30 pm

1 stop20h 40m

Seattle/Tacoma Intl

Thu 3/19

1:10 am-1:45 pm

2 stops22h 35m

$821

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 11/10

7:45 pm-6:10 pm

2 stops37h 25m

Seattle/Tacoma Intl

Thu 12/4

12:10 am-10:35 am

1 stop19h 25m

$822

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 2/3

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Sun 3/1

11:45 pm-3:55 pm

1 stop25h 10m

$835

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 2/24

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Thu 3/19

12:00 pm-10:55 pm

1 stop20h 55m

$845

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 2/24

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Tue 3/17

12:00 pm-10:55 pm

1 stop20h 55m

$845

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 2/25

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Sat 3/21

12:00 pm-10:55 pm

1 stop20h 55m

$845

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 2/25

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Fri 3/20

12:00 pm-10:55 pm

1 stop20h 55m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 20 results
1
2

Compare providers for flights from Chiang Mai to Seattle

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 Chiang Mai to Seattle in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
oojoPrice 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 Chiang Mai-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chiang Mai-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chiang Mai-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chiang Mai-Seattle flights, Cheapflights users trust eDreams the most. eDreams 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 Chiang Mai-Seattle 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 Chiang Mai to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

What’s the top layover airport for flights from Chiang Mai to Seattle?

Share of 1-stop round-trip flights from Chiang Mai to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

Taipei City (TPE) – chosen by Cheapflights users on 67% of 1-stop itineraries from Chiang Mai to Seattle on Cheapflights.

What’s the fastest layover option from Chiang Mai to Seattle?

Shortest average travel time for 1-stop one-way flights from Chiang Mai to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Taipei City (TPE) have the shortest average one-way travel time for 1-stop routes: 21h 55m.

What’s the fastest layover option from Chiang Mai to Seattle?

Shortest average travel time for 1-stop one-way flights from Chiang Mai to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Taipei City (TPE) have the shortest average one-way travel time for 1-stop routes: 21h 55m.

Which airport typically offers the quickest layover for flights from Chiang Mai to Seattle?

Average layover duration for 1-stop one-way flights from Chiang Mai to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Taipei City (TPE) offer the fastest connection on this route, with an average layover time of 4h 40m.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated October 28, 2025.
Read through reviews of airlines operating flights from Chiang Mai to Seattle, such as Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,153 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

Entertainment

8.2

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
1,153 reviews
Korean Air
8.4
Very good
1,153 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

Entertainment

8.2

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 Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chiang Mai to Seattle?

    Airlines like China Airlines and EVA Air fly from Chiang Mai to Seattle in about 20h 40m. The time it takes to get you to your destination can typically vary by up to 1h 05m. The distance from Chiang Mai to Seattle is about 7190 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Chiang Mai to Seattle round-trip?

    Korean Air, at $802, was found to be the cheapest airline from Chiang Mai to Seattle.. Users have found that Korean Air is 10% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chiang Mai to Seattle 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
Cle Elum
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Fife
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Alternative routes for Chiang Mai to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Suvarnabhumi to Seattle flights
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Suvarnabhumi to Pasco flights
Chiang Mai to Portland flights

Top airline flying from Chiang Mai to Seattle

Discover the top airline that operate flights from Chiang Mai to Seattle. 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$802Average$832FlexibilityNo cancel feeOn-time81%

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