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Cheap flights from Seattle to Chiang Mai from $470

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 8/20. 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
$869Korean Air
Sun, Dec 6 - Mon, Feb 22
Korean Air Logo
7:20 am - 10:55 pm
SEA
-
CNX
24h 35m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$874Korean Air
Sun, Dec 6 - Wed, Feb 24
Korean Air Logo
11:00 am - 10:55 pm
SEA
-
CNX
20h 55m
1 stop
Korean Air Logo
12:15 am - 10:11 pm
CNX
-
SEA
36h 56m
2 stops
$880Korean Air
Thu, Nov 12 - Mon, Dec 7
Korean Air Logo
7:20 am - 10:55 pm
SEA
-
CNX
24h 35m
2 stops
Korean Air Logo
12:15 am - 4:59 pm
CNX
-
SEA
31h 44m
2 stops
$885Korean Air
Sun, Dec 6 - Mon, Feb 22
Korean Air Logo
2:30 pm - 10:55 pm
SEA
-
CNX
41h 25m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$886Korean Air
Sat, Dec 5 - Tue, Feb 23
Korean Air Logo
2:30 pm - 10:55 pm
SEA
-
CNX
41h 25m
2 stops
Korean Air Logo
12:15 am - 2:47 pm
CNX
-
SEA
29h 32m
2 stops
$891Korean Air
Sat, Dec 5 - Mon, Feb 22
EVA Air Logo
1:30 am - 10:25 am
SEA
-
CNX
18h 55m
1 stop
EVA Air Logo
11:35 am - 7:20 pm
CNX
-
SEA
21h 45m
1 stop
$893EVA Air
Sun, Sep 27 - Tue, Oct 13
EVA Air Logo
12:10 am - 10:35 am
SEA
-
CNX
19h 25m
1 stop
EVA Air Logo
11:50 am - 6:10 pm
CNX
-
SEA
21h 20m
1 stop
$894EVA Air
Sun, Nov 1 - Mon, Nov 16
EVA Air Logo
12:10 am - 10:35 am
SEA
-
CNX
19h 25m
1 stop
EVA Air Logo
11:50 am - 6:10 pm
CNX
-
SEA
21h 20m
1 stop
$899EVA Air
Sun, Nov 1 - Mon, Nov 16
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
$909Korean Air
Sun, Dec 6 - Thu, Mar 4

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EVA Air flights from Seattle to Chiang Mai

Our best EVA Air deals on Seattle to Chiang Mai flight tickets
EVA Air
Sep 27
SEA1:30 amSeattle/Tacoma Intl
18h 55m
1 stop
CNX10:25 amChiang Mai
Oct 13
CNX11:35 amChiang Mai
21h 45m
1 stop
SEA7:20 pmSeattle/Tacoma Intl
$893
EVA Air
Nov 1
SEA12:10 amSeattle/Tacoma Intl
19h 25m
1 stop
CNX10:35 amChiang Mai
Nov 16
CNX11:50 amChiang Mai
21h 20m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$894
EVA Air
Nov 1
SEA12:10 amSeattle/Tacoma Intl
19h 25m
1 stop
CNX10:35 amChiang Mai
Nov 16
CNX11:50 amChiang Mai
21h 20m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$899

Korean Air flights from Seattle to Chiang Mai

Our best Korean Air deals on Seattle to Chiang Mai flight tickets
Korean Air
Dec 6
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Feb 22
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$869
Korean Air
Dec 6
SEA7:20 amSeattle/Tacoma Intl
24h 35m
2 stops
CNX10:55 pmChiang Mai
Feb 24
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$874
Korean Air
Nov 12
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Dec 7
CNX12:15 amChiang Mai
36h 56m
2 stops
SEA10:11 pmSeattle/Tacoma Intl
$880

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 July 23, 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

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 12/6

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Mon 2/22

12:15 am-9:00 am

1 stop23h 45m

$869

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 12/6

7:20 am-10:55 pm

2 stops24h 35m

Chiang Mai

Wed 2/24

12:15 am-9:00 am

1 stop23h 45m

$874

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 11/12

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Mon 12/7

12:15 am-10:11 pm

2 stops36h 56m

$880

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 12/6

7:20 am-10:55 pm

2 stops24h 35m

Chiang Mai

Mon 2/22

12:15 am-4:59 pm

2 stops31h 44m

$885

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 12/5

2:30 pm-10:55 pm

2 stops41h 25m

Chiang Mai

Tue 2/23

12:15 am-9:00 am

1 stop23h 45m

$886

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 12/5

2:30 pm-10:55 pm

2 stops41h 25m

Chiang Mai

Mon 2/22

12:15 am-2:47 pm

2 stops29h 32m

$891
Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Tue 10/13

11:35 am-7:20 pm

1 stop21h 45m

$893

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 11/1

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Mon 11/16

11:50 am-6:10 pm

1 stop21h 20m

$894

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 11/1

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Mon 11/16

11:50 am-6:10 pm

1 stop21h 20m

$899

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 12/6

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Thu 3/4

12:15 am-9:00 am

1 stop23h 45m

$909

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

Prices are currently low for flights on this route.

Typical prices usually range from $998 to $1,358.
The lowest price recently found on this route was $869.

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

19h 25m

Direct flights

None
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?

  • 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 $771Free CancellationRating
8.3
838 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,502 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.

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