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$513+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$803
(Korean Air)

One-way from

$513
(Expedia)

Popular in

August

Cheapest in

November

Average price

$838
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.
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From Chiang Mai to Seattle/Tacoma Intl
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One-way flight from Chiang Mai to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 14% potential increase in price ($162 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This Korean Air deal was found by Cheapflights users on 4/30. 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.
Tue 6/1011:15 pmCNX - SEA
1 stop25h 35mKorean Air
Tue 8/121:20 pmSEA - CNX
1 stop18h 35mKorean Air
Deal found 4/30$803
This oojo deal was found by Cheapflights users on 4/30. 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.
Sun 6/111:20 amCNX - SEA
1 stop22h 10mChina Airlines
Sun 6/291:10 amSEA - CNX
1 stop19h 10mChina Airlines
Deal found 4/30$826
This FlightHub deal was found by Cheapflights users on 4/30. 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 6/211:35 amCNX - SEA
1 stop21h 55mEVA Air
Mon 6/301:50 amSEA - CNX
1 stop18h 35mEVA Air
Deal found 4/30$827
This Trip.com deal was found by Cheapflights users on 4/30. 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 5/149:20 amCNX - SEA
2 stops23h 55mMultiple Airlines
Wed 7/911:35 pmSEA - CNX
2 stops27h 15mMultiple Airlines
Deal found 4/30$834
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 6/111:15 pmCNX - SEA
1 stop28h 25mDelta
Sat 9/1312:45 pmSEA - CNX
1 stop19h 10mDelta
Deal found 4/30$850
This STARLUX Airlines deal was found by Cheapflights users on 4/30. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/315:20 pmCNX - SEA
1 stop36h 50mSTARLUX Airlines
Sun 6/291:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Deal found 4/30$893
This Asiana Airlines deal was found by Cheapflights users on 4/30. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/412:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Wed 9/102:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
Deal found 4/30$915

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 May 1, 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

Tue 6/10

11:15 pm-10:50 am

1 stop25h 35m

Seattle/Tacoma Intl

Tue 8/12

1:20 pm-9:55 pm

1 stop18h 35m

$803

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 6/1

11:20 am-7:30 pm

1 stop22h 10m

Seattle/Tacoma Intl

Sun 6/29

1:10 am-10:20 am

1 stop19h 10m

$826

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 6/2

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Mon 6/30

1:50 am-10:25 am

1 stop18h 35m

$827

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 5/14

9:20 am-7:15 pm

2 stops23h 55m

Seattle/Tacoma Intl

Wed 7/9

11:35 pm-4:50 pm

2 stops27h 15m

$834

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 6/1

11:15 pm-1:40 pm

1 stop28h 25m

Seattle/Tacoma Intl

Sat 9/13

12:45 pm-9:55 pm

1 stop19h 10m

$850

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 5/31

5:20 pm-4:10 pm

1 stop36h 50m

Seattle/Tacoma Intl

Sun 6/29

1:15 am-4:20 pm

1 stop25h 05m

$893

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 6/4

12:45 am-12:30 pm

1 stop25h 45m

Seattle/Tacoma Intl

Sat 7/12

2:30 pm-11:40 pm

1 stop19h 10m

$915

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 6/10

5:20 pm-4:10 pm

1 stop36h 50m

$513

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 6/10

10:30 am-4:10 pm

2 stops43h 40m

$522

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 6/8

11:20 am-7:30 pm

1 stop22h 10m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 13 results
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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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chiang Mai-Seattle flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 is the cheapest month to book a flight from Chiang Mai to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chiang Mai to Seattle (average of $238). Flying from Chiang Mai to Seattle in July is currently the most expensive (average of $405). 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 May 1, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Chiang Mai to Seattle by reading reviews from past customers. 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.
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Asiana Airlines
8.2
Very good
442 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Boarding

9.0

Comfort

9.0

Food

8.9

Entertainment

9.0

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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.

  • What are the cheapest airlines flying from Chiang Mai to Seattle round-trip?

    Korean Air, at $803, was found to be the cheapest airline from Chiang Mai to Seattle.Alternate airlines to your destination round-trip include China Airlines and EVA Air. Users have found that Korean Air is 17% 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 STARLUX Airlines ($513), China Airlines ($536), and Delta ($563).

  • 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.

  • What is the cheapest month to book a flight from Chiang Mai to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chiang Mai to Seattle (average of $238). Flying from Chiang Mai to Seattle in July is currently the most expensive (average of $405). 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

Traveling to a place near Chiang Mai?

Book flights to Chiang Mai if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

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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 3 airlines flying from Chiang Mai to Seattle

Discover the top 3 airlines 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$622Average$783FlexibilityNo cancel feeOn-time76%
EVA AirCheapest$788Average$1,089FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$802Average$886FlexibilityNo cancel feeOn-time81%

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