Which layover airport offers the lowest fares from Seattle to Chiang Mai?

Flights via Taipei City (TPE) offer the lowest average round-trip price of $1,144.

Which layover airport has the shortest connection time from Seattle to Chiang Mai?

Taipei City (TPE) has the shortest average layover time for this route: 6h 52m.

Which airport is the most popular layover for flights between Seattle and Chiang Mai?

Taipei City (TPE) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Seattle to Chiang Mai?

Flights connecting via Taipei City (TPE) have the shortest average one-way travel time: 20h 05m.

What airlines fly to Chiang Mai?

EVA Air, China Airlines and Korean Air are the top three most popular airlines that fly to Chiang Mai from Seattle according to our data. EVA Air is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 3 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

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

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

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

Prices for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport refresh daily.

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

There are 3 operators available for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport as of September 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Chiang Mai Airport.

What documentation or ID do you need to fly to Chiang Mai Airport?

The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$408 Cheap Flights from Seattle to Chiang Mai in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Chiang Mai

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:32 am - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

25h 13m2 stops Los Angeles Incheon Intl

12:20 am - 2:50 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

29h 30m2 stops Incheon Intl Los Angeles

$780Korean Air

Mon, Oct 26 - Sat, Nov 7

5:45 pm - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

39h 00m2 stops Los Angeles Incheon Intl

12:20 am - 9:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

23h 45m1 stop Incheon Intl

$781Korean Air

Mon, Oct 26 - Sat, Nov 7

12:00 pm - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

20h 45m1 stop Incheon Intl

12:20 am - 9:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

23h 45m1 stop Incheon Intl

$787Korean Air

Mon, Oct 26 - Sat, Nov 7

1:30 pm - 10:55 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Incheon Intl

12:15 am - 11:51 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

26h 36m1 stop Incheon Intl

$813Delta

Fri, Oct 30 - Thu, Nov 12

12:40 pm - 10:55 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 15m1 stop Incheon Intl

12:15 am - 11:50 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

26h 35m1 stop Incheon Intl

$813Delta

Wed, Jan 27 - Thu, Feb 18

12:30 pm - 10:55 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Incheon Intl

12:15 am - 11:56 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

26h 41m1 stop Incheon Intl

$813Delta

Thu, Dec 3 - Fri, Dec 11

1:15 am - 10:20 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 7:15 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 55m1 stop Taipei City Taiwan Taoyuan Intl

$854China Airlines

Sun, Sep 27 - Tue, Oct 13

1:15 am - 10:20 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 7:15 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 55m1 stop Taipei City Taiwan Taoyuan Intl

$855China Airlines

Sun, Sep 27 - Tue, Oct 13

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

11:50 am - 5:30 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

20h 40m1 stop Taipei City Taiwan Taoyuan Intl

$905EVA Air

Tue, Nov 24 - Thu, Dec 3

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

11:50 am - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

$932EVA Air

Sun, Nov 8 - Mon, Dec 7

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China Airlines flights from Seattle to Chiang Mai

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

China Airlines

Sep 27

SEA1:15 amSeattle/Tacoma Intl

19h 05m

1 stop

CNX10:20 amChiang Mai

Oct 13

CNX11:20 amChiang Mai

21h 55m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$854

China Airlines

Sep 27

SEA1:15 amSeattle/Tacoma Intl

19h 05m

1 stop

CNX10:20 amChiang Mai

Oct 13

CNX11:20 amChiang Mai

21h 55m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$855

China Airlines

Sep 27

SEA1:15 amSeattle/Tacoma Intl

19h 05m

1 stop

CNX10:20 amChiang Mai

Oct 13

CNX11:20 amChiang Mai

21h 55m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$856

Korean Air flights from Seattle to Chiang Mai

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

Korean Air

Oct 26

SEA7:32 amSeattle/Tacoma Intl

25h 13m

2 stops

CNX10:45 pmChiang Mai

Nov 7

CNX12:20 amChiang Mai

29h 30m

2 stops

SEA2:50 pmSeattle/Tacoma Intl

$780

Korean Air

Oct 26

SEA5:45 pmSeattle/Tacoma Intl

39h 00m

2 stops

CNX10:45 pmChiang Mai

Nov 7

CNX12:20 amChiang Mai

23h 45m

1 stop

SEA9:05 amSeattle/Tacoma Intl

$781

Korean Air

Oct 26

SEA12:00 pmSeattle/Tacoma Intl

20h 45m

1 stop

CNX10:45 pmChiang Mai

Nov 7

CNX12:20 amChiang Mai

23h 45m

1 stop

SEA9:05 amSeattle/Tacoma Intl

$787

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 10/26

7:32 am-10:45 pm

2 stops25h 13m

Chiang Mai

Sat 11/7

12:20 am-2:50 pm

2 stops29h 30m

$780

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 10/26

5:45 pm-10:45 pm

2 stops39h 00m

Chiang Mai

Sat 11/7

12:20 am-9:05 am

1 stop23h 45m

$781

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 10/26

12:00 pm-10:45 pm

1 stop20h 45m

Chiang Mai

Sat 11/7

12:20 am-9:05 am

1 stop23h 45m

$787

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Fri 10/30

1:30 pm-10:55 pm

1 stop19h 25m

Chiang Mai

Thu 11/12

12:15 am-11:51 am

1 stop26h 36m

$813

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Wed 1/27

12:40 pm-10:55 pm

1 stop19h 15m

Chiang Mai

Thu 2/18

12:15 am-11:50 am

1 stop26h 35m

$813

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Thu 12/3

12:30 pm-10:55 pm

1 stop19h 25m

Chiang Mai

Fri 12/11

12:15 am-11:56 am

1 stop26h 41m

$813

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 10/13

11:20 am-7:15 pm

1 stop21h 55m

$854

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 10/13

11:20 am-7:15 pm

1 stop21h 55m

$855

Quickest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Tue 11/24

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Thu 12/3

11:50 am-5:30 pm

1 stop20h 40m

$905

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sun 11/8

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Mon 12/7

11:50 am-6:10 pm

1 stop21h 20m

$932

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 Seattle to Chiang Mai

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

Layovers

What is the typical price of a round-trip flight between Seattle and Chiang Mai?

Prices are currently low for flights on this route.

Typical prices usually range from $903 to $1,193.
The lowest price recently found on this route was $780.

What is the cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in February, then you should wait until January to fly from Seattle, when ticket prices are also cheap, with an average price of $853.

How far in advance should I book a flight from Seattle to Chiang Mai?

You are more likely to see cheaper flights to Chiang Mai from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around $1,082 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from Seattle for as low as $838 on momondo.

How have Seattle to Chiang Mai flight prices changed over time?

When to book flights from Seattle to Chiang Mai

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

Estimated round-trip price

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

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

Best Price Found	$408
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Chiang Mai from Seattle in the past 72 hours is $408. The best round-trip flight deal from Seattle to Chiang Mai found on momondo in the last 72 hours is $780.

The fastest flight from Seattle to Chiang Mai takes 19h 25m

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

Search flight deals

Frequently asked questions about flying from Seattle to Chiang Mai

How far is Seattle/Tacoma Intl to Chiang Mai by plane?
The distance between Seattle/Tacoma Intl and Chiang Mai is about 7178.6 mi. 19h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport?
There are 3 operators available for flights from Seattle/Tacoma Intl Airport to Chiang Mai Airport as of September 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Chiang Mai Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Chiang Mai Airport.
What documentation or ID do you need to fly to Chiang Mai Airport?
The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Chiang Mai?
Based on momondo bookings for flights between Seattle and Chiang Mai, the leading airline is EVA Air, making up 60% of the total bookings. Other popular airlines include China Airlines with 29% and Korean Air with 11%.

Best airlines flying from Seattle to Chiang Mai

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

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
China Airlines	PriceFrom $797	Free Cancellation	Rating 8.3 844 reviews	Search China Airlines flights
EVA Air	PriceFrom $820	Free Cancellation	Rating 8.5 1,522 reviews	Search EVA Air flights

Why use momondo?

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

Finding the right flight to Chiang Mai from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chiang Mai quick and easy, saving you time and money.

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

Flights from Seattle to Chiang Mai 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 Seattle to Chiang Mai?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Chiang Mai.

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

Price alerts on flights to Chiang Mai from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Chiang Mai trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Chiang Mai from $408

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Chiang Mai departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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China Airlines flights from Seattle to Chiang Mai

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

Korean Air flights from Seattle to Chiang Mai

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

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

What is the typical price of a round-trip flight between Seattle and Chiang Mai?

What is the cheapest month to fly to Chiang Mai?

How far in advance should I book a flight from Seattle to Chiang Mai?

How have Seattle to Chiang Mai flight prices changed over time?

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

What airlines fly to Chiang Mai?

Which airport is the most popular layover for flights between Seattle and Chiang Mai?

Which layover airport offers the lowest fares from Seattle to Chiang Mai?

Which layover airport has the shortest travel time from Seattle to Chiang Mai?

Which layover airport has the shortest connection time from Seattle to Chiang Mai?

When to book flights from Seattle to Chiang Mai

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Seattle to Chiang Mai

Best airlines flying from Seattle to Chiang Mai

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

Why use momondo?

An easier way to manage your Chiang Mai trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Airports servicing Thailand

Fly your favorite airline to Chiang Mai

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Chiang Mai

List of cabin classes available on flights landing in Chiang Mai. Availability may vary depending on flight origin and airline.

Popular cities in Thailand

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

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