SEA - CNX

$450 Find Cheap Flights from Seattle to Chiang Mai - Compare and Save

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Everything you should know

Cheapest round-trip
$846
Typical prices: $866-$1,276
Korean Air
Sun 2/11Sat 2/17
SEA - CNX • 1 stop
Cheapest one-way
$449
Typical prices: $458-$651
Multiple Airlines
Mon 3/19
SEA - CNX • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Seattle and Chiang Mai. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
20 weeks
in advance
Our data shows that travelers who book at least 20 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 18% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Incheon Intl (ICN)
Cheapest • Avg $906 (round-trip)
Taipei City Taiwan Taoyuan Intl (TPE)
Shortest trip • 20h 49m (one-way)
Insights
Insights
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We hope you love your trip to Chiang Mai!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Chiang Mai

Thu, Feb 11 - Wed, Feb 17
Korean Air Logo
11:00 am - 10:45 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 45m1 stop Incheon Intl
Korean Air Logo
12:20 am - 9:05 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$846Korean Air
Fri, Mar 19 - Sat, Apr 3
Singapore Airlines Logo
9:40 am - 11:05 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
35h 25m1 stop Singapore Changi
Singapore Airlines Logo
5:35 pm - 8:45 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
29h 10m1 stop Singapore Changi
$850Singapore Airlines
Mon, Feb 1 - Sun, Feb 7
Delta Logo
12:50 pm - 10:45 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
18h 55m1 stop Incheon Intl
Delta Logo
12:20 am - 11:50 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
26h 30m1 stop Incheon Intl
$869Delta
Mon, Feb 15 - Mon, Mar 22
Korean Air Logo
12:10 am - 10:45 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
31h 35m1 stop Incheon Intl
Korean Air Logo
12:20 am - 3:10 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
28h 50m1 stop Incheon Intl
$872Korean Air
Wed, Feb 17 - Tue, Mar 23
Korean Air Logo
11:00 am - 10:45 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 45m1 stop Incheon Intl
Korean Air Logo
12:20 am - 10:05 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$872Korean Air
Tue, Jan 19 - Tue, Jan 26
Singapore Airlines Logo
8:40 am - 3:40 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
40h 00m1 stop Singapore Changi
Singapore Airlines Logo
12:05 pm - 7:05 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
34h 00m1 stop Singapore Changi
$877Singapore Airlines
Tue, Apr 20 - Tue, May 4
EVA Air Logo
1:30 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
18h 55m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
11:35 am - 6:50 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 15m1 stop Taipei City Taiwan Taoyuan Intl
$998EVA Air
Tue, Feb 9 - Tue, Mar 30
EVA Air Logo
12:10 am - 10:35 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 25m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
11:35 am - 6:50 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 15m1 stop Taipei City Taiwan Taoyuan Intl
$998EVA Air
Sun, Feb 7 - Mon, Mar 29
China Airlines Logo
12:10 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
11:20 am - 7:15 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 55m1 stop Taipei City Taiwan Taoyuan Intl
$1,092China Airlines
Mon, Mar 22 - Thu, Mar 25
China Airlines Logo
1:10 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
11:25 am - 7:10 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 45m1 stop Taipei City Taiwan Taoyuan Intl
$1,092China Airlines
Booking Insights

Price, demand and travel trends for Seattle to Chiang Mai flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Seattle to Chiang Mai?

Round-trip flights from Seattle to Chiang Mai typically range from $866 to $1,276. The lowest price found in the past 5 days was $846, on Korean Air.

What's the cheapest day of the week to fly from Seattle to Chiang Mai?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Chiang Mai. It’s 9% cheaper than the average day, while Friday is the most expensive, with prices 75% higher.

What’s the cheapest month to fly from Seattle to Chiang Mai?

•February is the cheapest month to fly from Seattle to Chiang Mai at $813 round-trip.
•December ($1,662) and June ($1,444) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 104% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Chiang Mai the cheapest?

Flights from Seattle to Chiang Mai are cheapest 20 weeks before departure. Booking in this window typically costs about 25% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Seattle to Chiang Mai flights

Low season

May

Cheapest flight

$449
Beat the crowds with an average 42% drop in travelers.
The most popular month to fly with an average 73% increase in travelers.
One-way flight from Seattle to Chiang Mai

When to book flights from Seattle to Chiang Mai

Are your dates flexible? Find out the best times to travel from Seattle to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Chiang Mai flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Seattle to Chiang Mai?

    Three cabin classes are available on flights from Seattle to Chiang Mai:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Seattle to Chiang Mai?

    A nonstop flight from Seattle to Chiang Mai takes 00m, covering 7,190 miles.

  • Do I need a passport to fly from Seattle to Chiang Mai?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to Chiang Mai flight?

    Round-trip flights from Seattle to Chiang Mai range from $866 to $1,276, with an average of $996 over the past 12 months. Anything below $866 counts as a good deal.

  • How expensive are last-minute Seattle to Chiang Mai flights?

    Last-minute fares on this route (booked within two weeks of departure) run 10% above the $996 route average. Book 20 weeks before departure for the lowest fares.

  • Have flight prices from Seattle to Chiang Mai changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $846 to $7,293. That means the highest observed fare was about 9x higher than the lowest one.

  • How are flight prices from Seattle to Chiang Mai looking right now?

    One-way fares from Seattle to Chiang Mai are currently higher than usual. Average one-way flight prices are about $629, which is 14% above the typical average for this route.

  • What car rental options are available at Chiang Mai Airport (CNX)?

    Chiang Mai Airport (CNX) hosts 5 major car rental companies, with daily rates averaging $31 for economy cars. Top options include:

    • Drive Car Rental
    • Alamo
    • Sixt
    • Yesaway
    • ASAP Car Rentals

  • Which airports can I use when flying from Seattle to Chiang Mai?

    Flights from Seattle to Chiang Mai usually depart from Seattle/Tacoma Intl (SEA) and arrive at Chiang Mai (CNX).

  • Which airports do connecting flights from Seattle to Chiang Mai pass through?

    One-stop flights from Seattle to Chiang Mai most commonly connect through:

    • Taipei City Taiwan Taoyuan Intl (TPE) - 78% of one-stop connections
    • Incheon Intl (ICN) - 17% of one-stop connections
    • Singapore Changi (SIN) - 4% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Chiang Mai?

    Yes. Flexible dates can save you up to 48% on flights from Seattle to Chiang Mai. Wednesday is the cheapest departure day at $913 round-trip on average, while Friday is the most expensive at $1,744, a difference of $831.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Seattle to Chiang Mai?

    Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time at 20h 49m, compared with 22h 23m via Incheon Intl (ICN) and 41h 37m via Singapore Changi (SIN).

  • What is the time difference between Seattle and Chiang Mai?

    Chiang Mai is 14 hours ahead of Seattle (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Chiang Mai?

    Some of the most popular sights in Chiang Mai are Chiang Mai Night Bazaar, Tha Phae Gate and Chiang Mai International Exhibition and Convention Centre. These are among the most viewed places in Chiang Mai on KAYAK.

Your guide to booking Seattle to Chiang Mai flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Friday. On this route, Wednesday flights average $913, about $831 less than Friday fares (48% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 25% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Chiang Mai trip for February. Fares historically average $813 round-trip in that month - typically $849 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Chiang Mai Airport.

    • De Lanna Hotel
    • Bodhi Serene, Chiang Mai
    • Lepure Hotel Chiangmai

More options for your flight from Seattle to Chiang Mai

Complete your trip to Chiang Mai with a hotel stay or car rental

Car rentals in Chiang Mai
Hotels in Chiang Mai
Vacations in Chiang Mai