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

STARLUX Airlines, Korean Air, and Delta are the most popular carriers operating from Chiang Mai to Seattle/Tacoma Intl

What airlines fly to Seattle?

Korean Air, Asiana Airlines and EVA Air are the top three most popular airlines that fly to Seattle from Chiang Mai according to our data. Korean Air is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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 August 2025, there are 3 operators 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.

$441 Cheap Flights from Chiang Mai to Seattle (CNX-SEA) in 2025

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Find the cheapest flights from Chiang Mai to Seattle (CNX-SEA)

Round-trip

One-way

Last minute

Cheap round-trip flights

11:25 am - 6:10 pmCNX-SEA

21h 45m1 stop

12:10 am - 4:35 pmSEA-CNX

25h 25m1 stop

$789China Airlines

Find Deal

Sun, Dec 21 - Sat, Jan 10

4:55 pm - 3:05 pmCNX-SEA

37h 10m1 stop

11:45 pm - 3:55 pmSEA-CNX

25h 10m1 stop

$801STARLUX Airlines

Find Deal

Sat, Dec 20 - Sun, Jan 11

4:55 pm - 3:05 pmCNX-SEA

37h 10m1 stop

11:45 pm - 3:55 pmSEA-CNX

25h 10m1 stop

$835STARLUX Airlines

Find Deal

Sat, Dec 20 - Sun, Dec 28

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 11:05 pmSEA-CNX

21h 05m1 stop

$843Korean Air

Find Deal

Sat, Dec 20 - Tue, Jan 13

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 11:05 pmSEA-CNX

21h 05m1 stop

$844Korean Air

Find Deal

Sat, Nov 8 - Mon, Dec 1

11:50 am - 5:40 pmCNX-SEA

20h 50m1 stop

11:30 pm - 10:35 amSEA-CNX

20h 05m1 stop

$847EVA Air

Find Deal

Sat, Dec 20 - Tue, Dec 30

7:05 am - 6:35 pmCNX-SEA

26h 30m2 stops

9:30 pm - 4:50 pmSEA-CNX

28h 20m2 stops

$873

Find Deal

Sun, Dec 21 - Wed, Dec 31

10:10 am - 6:10 pmCNX-SEA

23h 00m2 stops

12:10 am - 10:35 amSEA-CNX

19h 25m1 stop

$901EVA Air

Find Deal

Sat, Dec 20 - Sat, Jan 10

7:05 am - 3:05 pmCNX-SEA

23h 00m2 stops

11:45 pm - 9:20 pmSEA-CNX

30h 35m2 stops

$909

Find Deal

Sun, Dec 21 - Sat, Dec 27

12:45 am - 12:30 pmCNX-SEA

25h 45m1 stop

2:15 pm - 11:40 pmSEA-CNX

19h 25m1 stop

$928Asiana Airlines

Find Deal

Mon, Sep 29 - Tue, Oct 7

China Airlines flights from Chiang Mai to Seattle

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

China Airlines

Dec 21

CNX11:25 amChiang Mai

21h 45m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

Jan 10

SEA12:10 amSeattle/Tacoma Intl

25h 25m

1 stop

CNX4:35 pmChiang Mai

$789

Find similar

China Airlines

Dec 22

CNX5:35 pmChiang Mai

15h 35m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

Dec 28

SEA12:10 amSeattle/Tacoma Intl

19h 15m

1 stop

CNX10:25 amChiang Mai

$851

Find similar

China Airlines

Dec 22

CNX5:35 pmChiang Mai

15h 35m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

Jan 12

SEA12:10 amSeattle/Tacoma Intl

19h 15m

1 stop

CNX10:25 amChiang Mai

$887

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 20

CNX4:55 pmChiang Mai

37h 10m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

Jan 11

SEA11:45 pmSeattle/Tacoma Intl

25h 10m

1 stop

CNX3:55 pmChiang Mai

$801

Find similar

STARLUX Airlines

Dec 20

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

$835

Find similar

STARLUX Airlines

Nov 11

CNX4:55 pmChiang Mai

37h 10m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

Dec 4

SEA11:45 pmSeattle/Tacoma Intl

25h 10m

1 stop

CNX3:55 pmChiang Mai

$837

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 12/21

11:25 am-6:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Sat 1/10

12:10 am-4:35 pm

1 stop25h 25m

$789

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Sun 1/11

11:45 pm-3:55 pm

1 stop25h 10m

$801

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

4:55 pm-3:05 pm

1 stop37h 10m

Seattle/Tacoma Intl

Sun 12/28

11:45 pm-3:55 pm

1 stop25h 10m

$835

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Tue 1/13

11:00 am-11:05 pm

1 stop21h 05m

$843

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 11/8

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Mon 12/1

11:00 am-11:05 pm

1 stop21h 05m

$844

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

11:50 am-5:40 pm

1 stop20h 50m

Seattle/Tacoma Intl

Tue 12/30

11:30 pm-10:35 am

1 stop20h 05m

$847

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 12/21

7:05 am-6:35 pm

2 stops26h 30m

Seattle/Tacoma Intl

Wed 12/31

9:30 pm-4:50 pm

2 stops28h 20m

$873

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/20

10:10 am-6:10 pm

2 stops23h 00m

Seattle/Tacoma Intl

Sat 1/10

12:10 am-10:35 am

1 stop19h 25m

$901

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 12/21

7:05 am-3:05 pm

2 stops23h 00m

Seattle/Tacoma Intl

Sat 12/27

11:45 pm-9:20 pm

2 stops30h 35m

$909

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 9/29

12:45 am-12:30 pm

1 stop25h 45m

Seattle/Tacoma Intl

Tue 10/7

2:15 pm-11:40 pm

1 stop19h 25m

$928

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

Best Price Found	$441
Fastest flight time	15h 35m
Direct flights	None
Airports in Seattle	1 airport

The best one-way flight to Seattle from Chiang Mai in the past 72 hours is $441. The best round-trip flight deal from Chiang Mai to Seattle found on momondo in the last 72 hours is $789.

The fastest flight from Chiang Mai to Seattle takes 15h 35m

There are no direct flights from Chiang Mai to Seattle. Popular non-direct route for this connection is Chiang Mai Airport - Seattle/Tacoma Intl Airport.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

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 August 2025, there are 3 operators 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 50% of all bookings. The subsequent popular airlines are Asiana Airlines at 28% and EVA Air at 22%.

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
Asiana Airlines	PriceFrom $622	Free Cancellation	Rating 8.2 474 reviews	Search Asiana Airlines flights
EVA Air	PriceFrom $788	Free Cancellation	Rating 8.4 1,233 reviews	Search EVA Air flights
Korean Air	PriceFrom $802	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Olympia

Renton

Kent

Lynnwood

Federal Way

Puyallup

Marysville

Tukwila

Kirkland

Lakewood

Centralia

Shoreline

Cle Elum

Fife

Westport

Redmond

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.