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Cheap flights from Seattle to Chiang Mai from $543

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 9/27. 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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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
4:45 pm - 8:10 am
CNX
-
SEA
29h 25m
1 stop
$976Singapore Airlines
Tue, Aug 25 - Mon, Mar 15
Multiple Airlines Logo
7:20 pm - 2:20 pm
SEA
-
CNX
52h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 5:57 pm
CNX
-
SEA
41h 22m
2 stops
$1,032Multiple Airlines
Sun, Nov 8 - Wed, Nov 18
Multiple Airlines Logo
7:10 am - 2:20 pm
SEA
-
CNX
40h 10m
2 stops
Multiple Airlines Logo
3:35 pm - 10:46 pm
CNX
-
SEA
46h 11m
2 stops
$1,036Multiple Airlines
Mon, Nov 9 - Mon, Nov 23
Multiple Airlines Logo
8:28 pm - 2:20 pm
SEA
-
CNX
51h 52m
2 stops
Multiple Airlines Logo
3:35 pm - 5:57 pm
CNX
-
SEA
41h 22m
2 stops
$1,037Multiple Airlines
Fri, Oct 30 - Fri, Nov 13
STARLUX Airlines Logo
1:15 am - 4:20 pm
SEA
-
CNX
25h 05m
1 stop
STARLUX Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
$1,043STARLUX Airlines
Sun, Sep 27 - Tue, Oct 13
STARLUX Airlines Logo
1:15 am - 4:20 pm
SEA
-
CNX
25h 05m
1 stop
STARLUX Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
$1,045STARLUX Airlines
Tue, Oct 6 - Thu, Oct 15
STARLUX Airlines Logo
1:15 am - 4:20 pm
SEA
-
CNX
25h 05m
1 stop
STARLUX Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
$1,046STARLUX Airlines
Tue, Oct 6 - Thu, Oct 15
Multiple Airlines Logo
1:47 pm - 2:20 pm
SEA
-
CNX
57h 33m
2 stops
Multiple Airlines Logo
3:35 pm - 4:57 pm
CNX
-
SEA
40h 22m
2 stops
$1,047Multiple Airlines
Wed, Nov 11 - Tue, Nov 24
Multiple Airlines Logo
7:10 am - 2:20 pm
SEA
-
CNX
40h 10m
2 stops
Multiple Airlines Logo
3:35 pm - 12:04 am
CNX
-
SEA
47h 29m
2 stops
$1,053Multiple Airlines
Mon, Nov 9 - Sun, Nov 22
Multiple Airlines Logo
10:15 am - 8:25 pm
SEA
-
CNX
44h 10m
2 stops
Multiple Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
$1,055Multiple Airlines
Sun, Sep 13 - Tue, Sep 22

STARLUX Airlines flights from Seattle to Chiang Mai

Our best STARLUX Airlines deals on Seattle to Chiang Mai flight tickets
STARLUX Airlines
Sep 27
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
Oct 13
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,043
STARLUX Airlines
Oct 6
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
Oct 15
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,045
STARLUX Airlines
Oct 6
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
Oct 15
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,046

Singapore Airlines flights from Seattle to Chiang Mai

Our best Singapore Airlines deals on Seattle to Chiang Mai flight tickets
Singapore Airlines
Sep 12
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Sep 21
CNX5:35 pmChiang Mai
29h 10m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$973
Singapore Airlines
Aug 25
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Mar 15
CNX4:45 pmChiang Mai
29h 25m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$976
Singapore Airlines
Sep 10
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Sep 21
CNX5:35 pmChiang Mai
29h 10m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,075

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 28, 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

Tue 8/25

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Mon 3/15

4:45 pm-8:10 am

1 stop29h 25m

$976

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 11/8

7:20 pm-2:20 pm

2 stops52h 00m

Chiang Mai

Wed 11/18

3:35 pm-5:57 pm

2 stops41h 22m

$1,032

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 11/9

7:10 am-2:20 pm

2 stops40h 10m

Chiang Mai

Mon 11/23

3:35 pm-10:46 pm

2 stops46h 11m

$1,036

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Fri 10/30

8:28 pm-2:20 pm

2 stops51h 52m

Chiang Mai

Fri 11/13

3:35 pm-5:57 pm

2 stops41h 22m

$1,037
Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Tue 10/13

5:20 pm-4:10 pm

1 stop36h 50m

$1,043

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/6

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 10/15

5:20 pm-4:10 pm

1 stop36h 50m

$1,045

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/6

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 10/15

5:20 pm-4:10 pm

1 stop36h 50m

$1,046

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 11/11

1:47 pm-2:20 pm

2 stops57h 33m

Chiang Mai

Tue 11/24

3:35 pm-4:57 pm

2 stops40h 22m

$1,047

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 11/9

7:10 am-2:20 pm

2 stops40h 10m

Chiang Mai

Sun 11/22

3:35 pm-12:04 am

2 stops47h 29m

$1,053

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/13

10:15 am-8:25 pm

2 stops44h 10m

Chiang Mai

Tue 9/22

5:20 pm-4:10 pm

1 stop36h 50m

$1,055

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 $849.

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 $1,036 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 $777 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

18h 25m

Direct flights

None
The fastest flight from Seattle to Chiang Mai takes 18h 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. 18h 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
Asiana AirlinesPriceFrom $673Free CancellationRating
8.1
535 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $763Free CancellationRating
8.3
826 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,461 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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