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$491+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This China Airlines deal was found by Cheapflights users on 1/26. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:20 am
CNX
-
SEA
1 stop21h 55m
China Airlines
Sun 9/271:15 am
SEA
-
CNX
1 stop19h 05m
China Airlines
Deal found 1/26$800
This EVA Air deal was found by Cheapflights users on 1/27. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:35 am
CNX
-
SEA
1 stop21h 45m
EVA Air
Fri 10/161:30 am
SEA
-
CNX
1 stop18h 55m
EVA Air
Deal found 1/27$816
This SmartFares deal was found by Cheapflights users on 1/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:35 am
CNX
-
SEA
2 stops35h 17m
Multiple Airlines
Sat 9/191:30 am
SEA
-
CNX
1 stop18h 55m
Multiple Airlines
Deal found 1/25$857
This China Airlines deal was found by Cheapflights users on 1/25. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:20 am
CNX
-
SEA
1 stop22h 30m
China Airlines
Sat 9/191:10 am
SEA
-
CNX
1 stop19h 10m
China Airlines
Deal found 1/25$881
This EaseMyTrip deal was found by Cheapflights users on 1/27. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:35 am
CNX
-
SEA
1 stop21h 45m
Multiple Airlines
Sat 10/174:42 pm
SEA
-
CNX
2 stops27h 43m
Multiple Airlines
Deal found 1/27$884
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 am
CNX
-
SEA
2 stops24h 28m
EVA Air
Sat 8/221:10 am
SEA
-
CNX
1 stop19h 15m
EVA Air
Deal found 1/26$885
This oojo deal was found by Cheapflights users on 1/25. 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.
Wed 8/1911:35 am
CNX
-
SEA
1 stop22h 15m
EVA Air
Sat 9/1912:30 am
SEA
-
CNX
1 stop19h 55m
EVA Air
Deal found 1/25$890
This Delta deal was found by Cheapflights users on 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:15 am
CNX
-
SEA
1 stop28h 05m
Delta
Mon 3/1612:35 pm
SEA
-
CNX
1 stop20h 20m
Delta
Deal found 1/27$898

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$898
(Delta)

One-way from

$491
(Trip.com)

Popular in

September

Cheapest in

April
Provider with most accurate pricing for Chiang Mai-Seattle/Tacoma Intl flight deals.
Search Deals
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. 8% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals

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 January 27, 2026.
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

Sat 2/28

12:15 am-1:20 pm

1 stop28h 05m

Seattle/Tacoma Intl

Mon 3/16

12:35 pm-10:55 pm

1 stop20h 20m

$898

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 3/1

9:25 am-1:55 pm

2 stops19h 30m

Seattle/Tacoma Intl

Sun 3/15

12:10 am-9:55 pm

2 stops31h 45m

$913

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 7/1

11:35 am-7:50 pm

1 stop22h 15m

Seattle/Tacoma Intl

Tue 8/11

2:10 am-10:25 am

1 stop18h 15m

$926

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 7/23

11:20 am-7:45 pm

1 stop22h 25m

Seattle/Tacoma Intl

Tue 9/22

1:15 am-10:20 am

1 stop19h 05m

$938

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 3/30

9:20 pm-9:00 am

2 stops25h 40m

$491

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 3/19

6:35 am-5:09 pm

3 stops48h 34m

$541

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 2/10

12:15 am-9:00 am

1 stop23h 45m

$545

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 7/23

11:20 am-7:45 pm

1 stop22h 25m

$545

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 2/12

12:15 am-1:20 pm

1 stop28h 05m

$547

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 3/18

12:15 am-2:20 pm

1 stop28h 05m

$547

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 14 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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from Chiang Mai to Seattle?

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 January 27, 2026.
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
1,188 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

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
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

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 Delta and EVA Air fly from Chiang Mai to Seattle in about 22h 15m. The time it takes to get you to your destination can typically vary by up to 5h 50m. 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 $803, was found to be the cheapest airline from Chiang Mai to Seattle.. Users have found that Korean Air is 6% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chiang Mai to Seattle one-way?

    The cheapest airlines for a one-way flight from Chiang Mai to Seattle are China Airlines ($482), Korean Air ($516), and STARLUX Airlines ($518).

  • 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
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Browse thousands of different options on Cheapflights for your next trip

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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.
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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$803Average$832FlexibilityNo cancel feeOn-time81%

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