฿12,960 Cheap Flights from Seattle (SEA) to Chiang Mai (CNX)

View ฿12,960 flight on Thu, 18 Sep 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Chiang Mai Intl. Airport (CNX)

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Cheap Flights from Seattle (SEA) to Chiang Mai (CNX)

Prices were available within the past 7 days and start at ฿12,960 for one-way flights and ฿23,770 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Tue, 16 Sep - Thu, 25 Sep
SEA
Seattle
CNX
Chiang Mai
฿23,770 Return, found 2 days ago
฿23,770
Return
found 2 days ago
Select Asiana Airlines flight, departing Tue, 16 Sep from Seattle to Chiang Mai, returning Thu, 25 Sep, priced at ฿23,770 found 2 days ago
Asiana Airlines
Thu, 18 Sep - Mon, 22 Sep
SEA
Seattle
CNX
Chiang Mai
฿24,500 Return, found 1 day ago
฿24,500
Return
found 1 day ago
Select Asiana Airlines flight, departing Thu, 18 Sep from Seattle to Chiang Mai, returning Mon, 22 Sep, priced at ฿24,500 found 1 day ago
Asiana Airlines
Thu, 4 Sep - Thu, 18 Sep
SEA
Seattle
CNX
Chiang Mai
฿25,280 Return, found 1 hour ago
฿25,280
Return
found 1 hour ago
Select Asiana Airlines flight, departing Thu, 4 Sep from Seattle to Chiang Mai, returning Thu, 18 Sep, priced at ฿25,280 found 1 hour ago
Korean Air
Tue, 16 Sep - Thu, 25 Sep
SEA
Seattle
CNX
Chiang Mai
฿26,465 Return, found 2 days ago
฿26,465
Return
found 2 days ago
Select Korean Air flight, departing Tue, 16 Sep from Seattle to Chiang Mai, returning Thu, 25 Sep, priced at ฿26,465 found 2 days ago
Asiana Airlines
Mon, 6 Oct - Mon, 13 Oct
SEA
Seattle
CNX
Chiang Mai
฿27,050 Return, found 4 days ago
฿27,050
Return
found 4 days ago
Select Asiana Airlines flight, departing Mon, 6 Oct from Seattle to Chiang Mai, returning Mon, 13 Oct, priced at ฿27,050 found 4 days ago
Korean Air
Sat, 6 Sep - Sun, 14 Sep
SEA
Seattle
CNX
Chiang Mai
฿27,530 Return, found 5 days ago
฿27,530
Return
found 5 days ago
Select Korean Air flight, departing Sat, 6 Sep from Seattle to Chiang Mai, returning Sun, 14 Sep, priced at ฿27,530 found 5 days ago
Korean Air
Sat, 6 Sep - Sun, 14 Sep
SEA
Seattle
CNX
Chiang Mai
฿27,560 Return, found 5 days ago
฿27,560
Return
found 5 days ago
Select Korean Air flight, departing Sat, 6 Sep from Seattle to Chiang Mai, returning Sun, 14 Sep, priced at ฿27,560 found 5 days ago
EVA Airways
Thu, 15 Jan - Wed, 11 Feb
SEA
Seattle
CNX
Chiang Mai
฿29,015 Return, found 6 days ago
฿29,015
Return
found 6 days ago
Select EVA Airways flight, departing Thu, 15 Jan from Seattle to Chiang Mai, returning Wed, 11 Feb, priced at ฿29,015 found 6 days ago
Alaska Airlines
Tue, 16 Sep - Thu, 25 Sep
SEA
Seattle
CNX
Chiang Mai
฿29,060 Return, found 2 days ago
฿29,060
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 16 Sep from Seattle to Chiang Mai, returning Thu, 25 Sep, priced at ฿29,060 found 2 days ago
China Airlines
Mon, 6 Oct - Mon, 13 Oct
SEA
Seattle
CNX
Chiang Mai
฿29,345 Return, found 4 days ago
฿29,345
Return
found 4 days ago
Select China Airlines flight, departing Mon, 6 Oct from Seattle to Chiang Mai, returning Mon, 13 Oct, priced at ฿29,345 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to Chiang Mai (CNX)

February is typically the cheapest month to fly

From ฿22,830 - ฿37,323 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Chiang Mai route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Chiang Mai Intl.
Return price
฿23,770
Distance
11511 km

Perfect flights from Seattle to Chiang Mai

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Chiang Mai. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Chiang Mai Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿12,960 and roundtrip prices from ฿23,770. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Chiang Mai Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Chiang Mai.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to Chiang Mai Intl. Airport (CNX)?
The lowest price advertised for a round-trip flight from SEA to Chiang Mai Intl. Airport (CNX) is ฿23,770. But you better get moving. This price is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Chiang Mai Intl. Airport (CNX)?
We understand that your situation can change unexpectedly, so we've made it as simple as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Chiang Mai Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Chiang Mai Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Chiang Mai Intl. Airport (CNX)?
You'll have 11,600 kilometres to cover on the long-haul SeaTac to Chiang Mai route. Wear layers of comfortable clothes and consider taking earplugs and a sleep mask.
Which airlines fly direct from SEA to Chiang Mai Airport?
If you want to fly straight from Sea-Tac Airport to CNX, you'll need to book a flight with at least one stop. Unfortunately, there are no airlines that fly directly between these airports.
Are Seattle - Tacoma Intl. Airport (SEA) to Chiang Mai Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from SEA to Chiang Mai Intl. Airport (CNX) last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you'd prefer not to take the risk, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

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