What is the cheapest airline that flies from Chiang Mai to Seattle/Tacoma Intl?

China Airlines is the most popular carrier operating from Chiang Mai to Seattle/Tacoma Intl

When did momondo last update prices for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport were last updated today.

How many operators does momondo search for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport?

As of December 2025, there is 1 operator available to choose from for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Chiang Mai Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chiang Mai Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$428 Cheap Flights from Chiang Mai to Seattle in 2025/26

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Find the cheapest flights from Chiang Mai to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:50 am - 7:10 pm

CNX

SEA

21h 20m1 stop

1:30 am - 10:25 am

SEA

CNX

18h 55m1 stop

$773EVA Air

Wed, Mar 25 - Tue, Apr 28

11:50 am - 6:30 pm

CNX

SEA

20h 40m1 stop

1:30 am - 10:25 am

SEA

CNX

18h 55m1 stop

$807EVA Air

Thu, Mar 26 - Wed, Apr 29

12:10 pm - 7:10 pm

CNX

SEA

21h 00m2 stops

12:50 am - 10:25 am

SEA

CNX

19h 35m1 stop

$826EVA Air

Wed, Mar 25 - Thu, Apr 30

9:25 am - 6:30 pm

CNX

SEA

23h 05m2 stops

1:30 am - 10:25 am

SEA

CNX

18h 55m1 stop

$862Multiple Airlines

Thu, Mar 26 - Wed, Apr 29

11:25 am - 7:10 pm

CNX

SEA

21h 45m1 stop

1:10 am - 10:20 am

SEA

CNX

19h 10m1 stop

$865China Airlines

Sat, Mar 28 - Thu, Apr 30

12:10 pm - 7:10 pm

CNX

SEA

21h 00m2 stops

1:30 am - 1:45 pm

SEA

CNX

22h 15m2 stops

$879EVA Air

Wed, Mar 25 - Wed, Apr 29

9:40 pm - 5:30 pm

CNX

SEA

34h 50m2 stops

11:30 pm - 9:00 pm

SEA

CNX

30h 30m2 stops

$883EVA Air

Wed, Dec 24 - Tue, Dec 30

11:25 am - 7:10 pm

CNX

SEA

21h 45m1 stop

1:10 am - 10:20 am

SEA

CNX

19h 10m1 stop

$893China Airlines

Thu, Mar 26 - Mon, Apr 27

10:10 am - 6:10 pm

CNX

SEA

23h 00m2 stops

12:10 am - 10:35 am

SEA

CNX

19h 25m1 stop

$897EVA Air

Fri, Dec 26 - Wed, Jan 21

11:25 am - 7:10 pm

CNX

SEA

21h 45m1 stop

1:10 am - 10:20 am

SEA

CNX

19h 10m1 stop

$903China Airlines

Sat, Mar 28 - Mon, Apr 27

EVA Air flights from Chiang Mai to Seattle

Our best EVA Air deals on Chiang Mai to Seattle flight tickets

EVA Air

Mar 25

CNX11:50 amChiang Mai

21h 20m

1 stop

SEA7:10 pmSeattle/Tacoma Intl

Apr 28

SEA1:30 amSeattle/Tacoma Intl

18h 55m

1 stop

CNX10:25 amChiang Mai

$773

Find similar

EVA Air

Mar 26

CNX11:50 amChiang Mai

20h 40m

1 stop

SEA6:30 pmSeattle/Tacoma Intl

Apr 29

SEA1:30 amSeattle/Tacoma Intl

18h 55m

1 stop

CNX10:25 amChiang Mai

$807

Find similar

EVA Air

Mar 25

CNX12:10 pmChiang Mai

21h 00m

2 stops

SEA7:10 pmSeattle/Tacoma Intl

Apr 30

SEA12:50 amSeattle/Tacoma Intl

19h 35m

1 stop

CNX10:25 amChiang Mai

$826

Find similar

China Airlines flights from Chiang Mai to Seattle

Our best China Airlines deals on Chiang Mai to Seattle flight tickets

China Airlines

Mar 28

CNX11:25 amChiang Mai

21h 45m

1 stop

SEA7:10 pmSeattle/Tacoma Intl

Apr 30

SEA1:10 amSeattle/Tacoma Intl

19h 10m

1 stop

CNX10:20 amChiang Mai

$865

Find similar

China Airlines

Mar 26

CNX11:25 amChiang Mai

21h 45m

1 stop

SEA7:10 pmSeattle/Tacoma Intl

Apr 27

SEA1:10 amSeattle/Tacoma Intl

19h 10m

1 stop

CNX10:20 amChiang Mai

$893

Find similar

China Airlines

Mar 28

CNX11:25 amChiang Mai

21h 45m

1 stop

SEA7:10 pmSeattle/Tacoma Intl

Apr 27

SEA1:10 amSeattle/Tacoma Intl

19h 10m

1 stop

CNX10:20 amChiang Mai

$903

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 3/25

11:50 am-7:10 pm

1 stop21h 20m

Seattle/Tacoma Intl

Tue 4/28

1:30 am-10:25 am

1 stop18h 55m

$773

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 3/26

11:50 am-6:30 pm

1 stop20h 40m

Seattle/Tacoma Intl

Wed 4/29

1:30 am-10:25 am

1 stop18h 55m

$807

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 3/25

12:10 pm-7:10 pm

2 stops21h 00m

Seattle/Tacoma Intl

Thu 4/30

12:50 am-10:25 am

1 stop19h 35m

$826

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 3/26

9:25 am-6:30 pm

2 stops23h 05m

Seattle/Tacoma Intl

Wed 4/29

1:30 am-10:25 am

1 stop18h 55m

$862

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 3/28

11:25 am-7:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Thu 4/30

1:10 am-10:20 am

1 stop19h 10m

$865

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 3/25

12:10 pm-7:10 pm

2 stops21h 00m

Seattle/Tacoma Intl

Wed 4/29

1:30 am-1:45 pm

2 stops22h 15m

$879

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 12/24

9:40 pm-5:30 pm

2 stops34h 50m

Seattle/Tacoma Intl

Tue 12/30

11:30 pm-9:00 pm

2 stops30h 30m

$883

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Thu 3/26

11:25 am-7:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Mon 4/27

1:10 am-10:20 am

1 stop19h 10m

$893

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Fri 12/26

10:10 am-6:10 pm

2 stops23h 00m

Seattle/Tacoma Intl

Wed 1/21

12:10 am-10:35 am

1 stop19h 25m

$897

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 3/28

11:25 am-7:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Mon 4/27

1:10 am-10:20 am

1 stop19h 10m

$903

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chiang Mai to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Chiang Mai is on a Sunday. momondo users have found tickets for Sunday departures for as low as $946. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Chiang Mai because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,147.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Chiang Mai in the evening is the least expensive time of day to depart. momondo users have found prices as low as $950 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $1,095. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Chiang Mai to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Chiang Mai to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chiang Mai to Seattle (CNX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chiang Mai to Seattle

Fastest flight time	21h 20m
Direct flights	None

The fastest flight from Chiang Mai to Seattle takes 21h 20m

There are no direct flights from Chiang Mai to Seattle. There are no popular flight routes from Chiang Mai to Seattle.

Search flight deals

How far is Chiang Mai to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 7178.6 mi away from Chiang Mai. 15h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport?
As of December 2025, there is 1 operator available to choose from for flights from Chiang Mai Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Chiang Mai Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chiang Mai Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Chiang Mai to Seattle?
momondo data reveals that the most frequently booked airline on the route from Chiang Mai to Seattle is Korean Air, representing 100% of all bookings.

Best airlines flying from Chiang Mai to Seattle

Compare and see reviews for airlines that fly from Chiang Mai to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $803	Free Cancellation	Rating 8.4 1,181 reviews		Search Korean Air flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Cle Elum

Federal Way

Lakewood

Fife

Westport

Kirkland

Centralia

Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Chiang Mai to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chiang Mai to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Chiang Mai to Seattle with flexible booking policies on momondo?

Flights from Chiang Mai to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chiang Mai to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Chiang Mai.

I’m not ready to book a flight from Chiang Mai to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chiang Mai to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.