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

China Airlines, STARLUX Airlines, and Korean Air are the most popular carriers 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 October 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.

$415 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.

5:35 pm - 6:10 pmCNX-SEA

15h 35m1 stop

12:10 am - 10:25 amSEA-CNX

19h 15m1 stop

$817China Airlines

Find Deal

Mon, Nov 10 - Thu, Dec 4

5:35 pm - 6:10 pmCNX-SEA

15h 35m1 stop

12:10 am - 10:25 amSEA-CNX

19h 15m1 stop

$818China Airlines

Find Deal

Mon, Nov 10 - Thu, Dec 4

11:50 am - 6:10 pmCNX-SEA

21h 20m1 stop

12:10 am - 9:00 pmSEA-CNX

29h 50m2 stops

$821EVA Air

Find Deal

Wed, Dec 17 - Sat, Dec 27

7:45 pm - 5:30 pmCNX-SEA

36h 45m2 stops

12:10 am - 10:35 amSEA-CNX

19h 25m1 stop

$822EVA Air

Find Deal

Mon, Nov 10 - Thu, Dec 4

4:55 pm - 3:05 pmCNX-SEA

37h 10m1 stop

11:45 pm - 3:55 pmSEA-CNX

25h 10m1 stop

$832STARLUX Airlines

Find Deal

Tue, Dec 16 - Sun, Dec 28

4:55 pm - 3:05 pmCNX-SEA

37h 10m1 stop

11:45 pm - 3:55 pmSEA-CNX

25h 10m1 stop

$897STARLUX Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 30

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 10:55 pmSEA-CNX

20h 55m1 stop

$990Korean Air

Find Deal

Sun, Dec 14 - Wed, Dec 31

11:50 am - 6:10 pmCNX-SEA

21h 20m1 stop

7:23 pm - 10:35 amSEA-CNX

24h 12m2 stops

$1,007Multiple Airlines

Find Deal

Wed, Dec 17 - Mon, Dec 29

10:35 am - 6:40 pmCNX-SEA

23h 05m2 stops

9:30 pm - 12:35 amSEA-CNX

36h 05m1 stop

$1,034Multiple Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 30

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 10:55 pmSEA-CNX

20h 55m1 stop

$1,036Korean Air

Find Deal

Sat, Dec 20 - Wed, Dec 31

EVA Air flights from Chiang Mai to Seattle

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

EVA Air

Dec 17

CNX11:50 amChiang Mai

21h 20m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

Dec 27

SEA12:10 amSeattle/Tacoma Intl

29h 50m

2 stops

CNX9:00 pmChiang Mai

$821

Find similar

EVA Air

Nov 10

CNX7:45 pmChiang Mai

36h 45m

2 stops

SEA5:30 pmSeattle/Tacoma Intl

Dec 4

SEA12:10 amSeattle/Tacoma Intl

19h 25m

1 stop

CNX10:35 amChiang Mai

$822

Find similar

EVA Air

Nov 10

CNX7:45 pmChiang Mai

36h 45m

2 stops

SEA5:30 pmSeattle/Tacoma Intl

Dec 4

SEA12:10 amSeattle/Tacoma Intl

19h 25m

1 stop

CNX10:35 amChiang Mai

$827

Find similar

STARLUX Airlines flights from Chiang Mai to Seattle

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

STARLUX Airlines

Dec 16

CNX4:55 pmChiang Mai

37h 10m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

Dec 28

SEA11:45 pmSeattle/Tacoma Intl

25h 10m

1 stop

CNX3:55 pmChiang Mai

$832

Find similar

STARLUX Airlines

Dec 16

CNX4:55 pmChiang Mai

37h 10m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

Dec 30

SEA11:45 pmSeattle/Tacoma Intl

25h 10m

1 stop

CNX3:55 pmChiang Mai

$897

Find similar

Fly from

Fly to

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

$817

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

$818

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 12/17

11:50 am-6:10 pm

1 stop21h 20m

Seattle/Tacoma Intl

Sat 12/27

12:10 am-9:00 pm

2 stops29h 50m

$821

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 11/10

7:45 pm-5:30 pm

2 stops36h 45m

Seattle/Tacoma Intl

Thu 12/4

12:10 am-10:35 am

1 stop19h 25m

$822

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 12/16

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Sun 12/28

11:45 pm-3:55 pm

1 stop25h 10m

$832

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 12/16

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Tue 12/30

11:45 pm-3:55 pm

1 stop25h 10m

$897

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 12/14

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Wed 12/31

11:00 am-10:55 pm

1 stop20h 55m

$990

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 12/17

11:50 am-6:10 pm

1 stop21h 20m

Seattle/Tacoma Intl

Mon 12/29

7:23 pm-10:35 am

2 stops24h 12m

$1,007

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 12/16

10:35 am-6:40 pm

2 stops23h 05m

Seattle/Tacoma Intl

Tue 12/30

9:30 pm-12:35 am

1 stop36h 05m

$1,034

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Wed 12/31

11:00 am-10:55 pm

1 stop20h 55m

$1,036

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

Direct flights	None

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 October 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 $802	Free Cancellation	Rating 8.4 1,149 reviews		Search Korean Air flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Tukwila

Lakewood

Kirkland

Fife

Centralia

Shoreline

Cle Elum

Redmond

Westport

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.