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Cheap flights from Seattle to Chiang Mai from $471

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 9/12. 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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0 bags

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Find the cheapest flights from Seattle to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 4:35 pm
SEA
-
CNX
40h 20m
1 stop
Singapore Airlines Logo
12:05 pm - 7:10 am
CNX
-
SEA
34h 05m
1 stop
$929Singapore Airlines
Thu, Sep 17 - Thu, Nov 12
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
$971Korean Air
Thu, Oct 29 - Wed, Nov 11
Singapore Airlines Logo
10:15 am - 4:35 pm
SEA
-
CNX
40h 20m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$973Singapore Airlines
Tue, Oct 13 - Wed, Nov 11
Korean Air Logo
7:20 am - 10:55 pm
SEA
-
CNX
25h 35m
2 stops
Korean Air Logo
12:15 am - 9:00 am
CNX
-
SEA
23h 45m
1 stop
$977Korean Air
Thu, Oct 29 - Wed, Nov 11
Korean Air Logo
7:20 am - 10:55 pm
SEA
-
CNX
25h 35m
2 stops
Korean Air Logo
12:15 am - 2:47 pm
CNX
-
SEA
29h 32m
2 stops
$988Korean Air
Thu, Oct 29 - Wed, Nov 11
Singapore Airlines Logo
9:45 am - 3:45 pm
SEA
-
CNX
40h 00m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$1,018Singapore Airlines
Fri, Oct 30 - Fri, Nov 13
Singapore Airlines Logo
9:45 am - 3:45 pm
SEA
-
CNX
40h 00m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$1,020Singapore Airlines
Fri, Oct 30 - Fri, Nov 13
Singapore Airlines Logo
9:45 am - 3:45 pm
SEA
-
CNX
40h 00m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$1,021Singapore Airlines
Fri, Oct 30 - Fri, Nov 13
Singapore Airlines Logo
9:45 am - 3:45 pm
SEA
-
CNX
40h 00m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$1,022Singapore Airlines
Fri, Oct 30 - Fri, Nov 13
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$1,029China Airlines
Sun, Sep 27 - Tue, Oct 13

Singapore Airlines flights from Seattle to Chiang Mai

Our best Singapore Airlines deals on Seattle to Chiang Mai flight tickets
Singapore Airlines
Sep 17
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Nov 12
CNX12:05 pmChiang Mai
34h 05m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$929
Singapore Airlines
Oct 13
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Nov 11
CNX4:45 pmChiang Mai
29h 25m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$973
Singapore Airlines
Oct 30
SEA9:45 amSeattle/Tacoma Intl
40h 00m
1 stop
CNX3:45 pmChiang Mai
Nov 13
CNX4:45 pmChiang Mai
29h 25m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,018

Korean Air flights from Seattle to Chiang Mai

Our best Korean Air deals on Seattle to Chiang Mai flight tickets
Korean Air
Oct 29
SEA12:00 pmSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Nov 11
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$971
Korean Air
Oct 29
SEA7:20 amSeattle/Tacoma Intl
25h 35m
2 stops
CNX10:55 pmChiang Mai
Nov 11
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$977
Korean Air
Oct 29
SEA7:20 amSeattle/Tacoma Intl
25h 35m
2 stops
CNX10:55 pmChiang Mai
Nov 11
CNX12:15 amChiang Mai
29h 32m
2 stops
SEA2:47 pmSeattle/Tacoma Intl
$988

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 May 9, 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

Thu 9/17

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Thu 11/12

12:05 pm-7:10 am

1 stop34h 05m

$929

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 10/29

12:00 pm-10:55 pm

1 stop20h 55m

Chiang Mai

Wed 11/11

12:15 am-9:00 am

1 stop23h 45m

$971

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/13

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Wed 11/11

4:45 pm-7:10 am

1 stop29h 25m

$973

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 10/29

7:20 am-10:55 pm

2 stops25h 35m

Chiang Mai

Wed 11/11

12:15 am-9:00 am

1 stop23h 45m

$977

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 10/29

7:20 am-10:55 pm

2 stops25h 35m

Chiang Mai

Wed 11/11

12:15 am-2:47 pm

2 stops29h 32m

$988

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Fri 10/30

9:45 am-3:45 pm

1 stop40h 00m

Chiang Mai

Fri 11/13

4:45 pm-7:10 am

1 stop29h 25m

$1,018

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Fri 10/30

9:45 am-3:45 pm

1 stop40h 00m

Chiang Mai

Fri 11/13

4:45 pm-7:10 am

1 stop29h 25m

$1,020

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Fri 10/30

9:45 am-3:45 pm

1 stop40h 00m

Chiang Mai

Fri 11/13

4:45 pm-7:10 am

1 stop29h 25m

$1,021

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Fri 10/30

9:45 am-3:45 pm

1 stop40h 00m

Chiang Mai

Fri 11/13

4:45 pm-7:10 am

1 stop29h 25m

$1,022
Quickest round-trip

SeattleChiang Mai

SEA - CNX

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

$1,029

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?

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 August to fly from Seattle, when ticket prices are also cheap, with an average price of $834.

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 $1,019 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 $772 on momondo.

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

As of May 2026, prices for Seattle to Chiang Mai flights are approximately 44% cheaper when compared to flights at the same time last year.

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 05m

Direct flights

None
The fastest flight from Seattle to Chiang Mai takes 19h 05m
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 05m 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
Korean AirPriceFrom $418Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
Asiana AirlinesPriceFrom $675Free CancellationRating
8.1
530 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $763Free CancellationRating
8.3
822 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,444 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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