Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Chiang Mai from $430

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 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
11:00 am - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$899Korean Air
Thu, Nov 12 - Sun, Nov 15
Korean Air Logo
12:00 pm - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$900Korean Air
Sun, Oct 25 - Sun, Nov 1
Korean Air Logo
12:00 pm - 10:55 pm
SEA
-
CNX
44h 55m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$905Korean Air
Sun, Oct 25 - Sun, Nov 1
Korean Air Logo
11:00 am - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 3:25 pm
CNX
-
SEA
30h 10m
2 stops
$910Korean Air
Thu, Nov 12 - Sun, Nov 15
Korean Air Logo
11:00 am - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 3:25 pm
CNX
-
SEA
30h 10m
2 stops
$911Korean Air
Thu, Nov 12 - Sun, Nov 15
Korean Air Logo
4:15 pm - 10:55 pm
SEA
-
CNX
40h 40m
2 stops
Korean Air Logo
12:15 am - 3:25 pm
CNX
-
SEA
30h 10m
2 stops
$916Korean Air
Sun, Oct 25 - Sun, Nov 1
Korean Air Logo
12:00 pm - 10:55 pm
SEA
-
CNX
44h 55m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$945Korean Air
Sat, Oct 24 - Sun, Nov 1
Korean Air Logo
12:00 pm - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 3:25 pm
CNX
-
SEA
29h 10m
2 stops
$951Korean Air
Sun, Oct 25 - Fri, Oct 30
Korean Air Logo
12:00 pm - 10:55 pm
SEA
-
CNX
44h 55m
2 stops
Korean Air Logo
12:15 am - 3:25 pm
CNX
-
SEA
30h 10m
2 stops
$956Korean Air
Sat, Oct 24 - Sun, Nov 1
Korean Air Logo
2:30 pm - 10:55 pm
SEA
-
CNX
42h 25m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$957Korean Air
Sat, Oct 24 - Fri, Nov 6

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Korean Air flights from Seattle to Chiang Mai

Our best Korean Air deals on Seattle to Chiang Mai flight tickets
Korean Air
Nov 12
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Nov 15
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$899
Korean Air
Oct 25
SEA12:00 pmSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Nov 1
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$900
Korean Air
Oct 25
SEA12:00 pmSeattle/Tacoma Intl
44h 55m
2 stops
CNX10:55 pmChiang Mai
Nov 1
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$905

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
$1,016
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
$1,018
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
$1,024

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Chiang Mai 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, momondo users made 832,500 searches. Data last updated June 24, 2026.
Use the filters below to find and compare flights from Seattle to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 11/12

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 11/15

12:15 am-9:00 am

1 stop23h 45m

$899

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 10/25

12:00 pm-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 11/1

12:15 am-9:00 am

1 stop23h 45m

$900

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 10/25

12:00 pm-10:55 pm

2 stops44h 55m

Chiang Mai

Sun 11/1

12:15 am-9:00 am

1 stop23h 45m

$905

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 11/12

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 11/15

12:15 am-3:25 pm

2 stops30h 10m

$910

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 11/12

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 11/15

12:15 am-3:25 pm

2 stops30h 10m

$911

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 10/25

4:15 pm-10:55 pm

2 stops40h 40m

Chiang Mai

Sun 11/1

12:15 am-3:25 pm

2 stops30h 10m

$916

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 10/24

12:00 pm-10:55 pm

2 stops44h 55m

Chiang Mai

Sun 11/1

12:15 am-9:00 am

1 stop23h 45m

$945

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 10/25

12:00 pm-10:55 pm

1 stop20h 55m

Chiang Mai

Fri 10/30

12:15 am-3:25 pm

2 stops29h 10m

$951

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 10/24

12:00 pm-10:55 pm

2 stops44h 55m

Chiang Mai

Sun 11/1

12:15 am-3:25 pm

2 stops30h 10m

$956

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 10/24

2:30 pm-10:55 pm

2 stops42h 25m

Chiang Mai

Fri 11/6

12:15 am-9:00 am

1 stop23h 45m

$957

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chiang Mai from

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

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?

If you don’t want to visit Chiang Mai in February, then you should wait until April to fly from Seattle, when ticket prices are also cheap, with an average price of $867.

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

Fastest flight time

20h 55m

Direct flights

None
The fastest flight from Seattle to Chiang Mai takes 20h 55m
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. 20h 55m 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?

  • 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?

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
China AirlinesPriceFrom $763Free CancellationRating
8.3
829 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,481 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 7/24
Fri 7/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand