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Cheap flights from Seattle to Chiang Mai from $371

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 8/3. 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

Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
$666Asiana Airlines
Find Deal
mié., ago. 13 - mar., sep. 2
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
Asiana Airlines Logo
12:45 am - 12:45 pmCNX-SEA
26h 00m1 stop
$679Asiana Airlines
Find Deal
jue., ago. 7 - dom., ago. 10
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
$680Asiana Airlines
Find Deal
mar., ago. 12 - lun., sep. 1
Logo
4:30 pm - 9:20 amSEA-CNX
26h 50m2 stops
Logo
7:45 pm - 1:20 pmCNX-SEA
32h 35m2 stops
$696
Find Deal
mar., oct. 21 - mar., nov. 18
Logo
4:30 pm - 9:20 amSEA-CNX
26h 50m2 stops
Logo
8:00 pm - 2:25 pmCNX-SEA
32h 25m2 stops
$699
Find Deal
mié., ago. 13 - mié., sep. 3
Korean Air Logo
12:50 pm - 9:55 pmSEA-CNX
19h 05m1 stop
Korean Air Logo
12:15 am - 9:00 amCNX-SEA
23h 45m1 stop
$758Korean Air
Find Deal
mar., oct. 21 - dom., nov. 23
Korean Air Logo
12:50 pm - 9:55 pmSEA-CNX
19h 05m1 stop
Korean Air Logo
11:15 pm - 10:40 amCNX-SEA
25h 25m1 stop
$766Korean Air
Find Deal
lun., oct. 13 - dom., oct. 19
Singapore Airlines Logo
10:15 am - 4:40 pmSEA-CNX
40h 25m1 stop
Singapore Airlines Logo
11:15 am - 8:45 amCNX-SEA
35h 30m1 stop
$791Singapore Airlines
Find Deal
sáb., oct. 11 - vie., oct. 17
Singapore Airlines Logo
10:15 am - 4:40 pmSEA-CNX
40h 25m1 stop
Singapore Airlines Logo
11:15 am - 8:45 amCNX-SEA
35h 30m1 stop
$792Singapore Airlines
Find Deal
sáb., oct. 11 - vie., oct. 17
China Airlines Logo
1:10 am - 10:20 amSEA-CNX
19h 10m1 stop
China Airlines Logo
11:25 am - 6:15 pmCNX-SEA
21h 50m1 stop
$858China Airlines
Find Deal
lun., oct. 20 - mar., nov. 18

Asiana Airlines flights from Seattle to Chiang Mai

Our best Asiana Airlines deals on Seattle to Chiang Mai flight tickets
Asiana Airlines
Aug 13
SEA2:30 pmSeattle/Tacoma Intl
19h 10m
1 stop
CNX11:40 pmChiang Mai
Sep 2
CNX12:45 amChiang Mai
25h 45m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$666
Find similar
Asiana Airlines
Aug 7
SEA2:30 pmSeattle/Tacoma Intl
19h 10m
1 stop
CNX11:40 pmChiang Mai
Aug 10
CNX12:45 amChiang Mai
26h 00m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$679
Find similar
Asiana Airlines
Aug 12
SEA2:30 pmSeattle/Tacoma Intl
19h 10m
1 stop
CNX11:40 pmChiang Mai
Sep 1
CNX12:45 amChiang Mai
25h 45m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$680
Find similar

Singapore Airlines flights from Seattle to Chiang Mai

Our best Singapore Airlines deals on Seattle to Chiang Mai flight tickets
Singapore Airlines
Oct 11
SEA10:15 amSeattle/Tacoma Intl
40h 25m
1 stop
CNX4:40 pmChiang Mai
Oct 17
CNX11:15 amChiang Mai
35h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$791
Find similar
Singapore Airlines
Oct 11
SEA10:15 amSeattle/Tacoma Intl
40h 25m
1 stop
CNX4:40 pmChiang Mai
Oct 17
CNX11:15 amChiang Mai
35h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$792
Find similar

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 cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in March, then you should wait until October to fly from Seattle, when ticket prices are also cheap, with an average price of $861.

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from Seattle to Chiang Mai is on a Tuesday. Travelers who choose to depart for Chiang Mai on a Tuesday will often find tickets for as low as $882. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Chiang Mai for around $1,415.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from Seattle in the morning is the least expensive time of day to depart. momondo users have found prices as low as $929 when looking at flights departing in the morning. Flights to Chiang Mai are more costly in the evening, with an average ticket price of $1,057. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $1,007 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 $789 on momondo.

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

As of July 2025, prices for Seattle to Chiang Mai flights are approximately 12% 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

Best Price Found

$371

Fastest flight time

18h 15m

Direct flights

None

Airports in Chiang Mai

1 airport
The best one-way flight to Chiang Mai from Seattle in the past 72 hours is $371. The best round-trip flight deal from Seattle to Chiang Mai found on momondo in the last 72 hours is $666.
The fastest flight from Seattle to Chiang Mai takes 18h 15m
There are no direct flights from Seattle to Chiang Mai. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Chiang Mai Airport.
There is 1 airport near Chiang Mai: Chiang Mai (CNX)
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  • 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 35m 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 $671Free CancellationRating
8.2
454 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
744 reviews
Search China Airlines flights
Singapore AirlinesPriceFrom $779Free CancellationRating
8.1
1,324 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $836Free CancellationRating
8.4
1,105 reviews
Search Korean Air flights
EVA AirPriceFrom $865Free CancellationRating
8.4
1,215 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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