SEL - CNX

฿3,981 Find Cheap Flights from Seoul to Chiang Mai – Compare and Save

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Everything you should know

Cheapest return flight
฿8,570
Typical prices: ฿9,001-฿13,183
Eastar Jet, Jeju Air
Wed 7/11Mon 12/11
ICN - CNX • Direct
Cheapest one-way flight
฿4,285
Typical prices: ฿4,007-฿7,254
Eastar Jet
Wed 7/11
ICN - CNX • Direct
Direct flights
Every day
You can fly direct with Jin Air, Eastar Jet, and others. Average duration is 6h 02m.
Direct flights
+1
Direct flights
+1
Top routes
GMP - CNX
Cheapest • 13% average savings
ICN - CNX
Most popular
Insights
Insights
When to book
6 weeks
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 6% compared to booking last minute.
Insights
Insights
When to travel
March
Cheapest • 25% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Don Mueang Intl (DMK)
Cheapest • Avg ฿7,507 (return)
Bangkok Suvarnabhumi (BKK)
Shortest trip • 8h 34m (one-way)
Insights
Insights
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We hope you enjoy your trip to Chiang Mai!
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Booking Insights
Flight Deals

Cheap Flights from Seoul to Chiang Mai (SEL-CNX)

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

Recent return flight deals from Seoul to Chiang Mai

Sat 7 Nov - Thu 12 Nov
Multiple Airlines Logo
17:25 - 21:20ICN  Incheon Intl-CNX Chiang Mai
5h 55mdirect
Multiple Airlines Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿8,570Multiple Airlines
Sat 7 Nov - Thu 12 Nov
Multiple Airlines Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
Multiple Airlines Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿9,211Multiple Airlines
Sat 7 Nov - Fri 13 Nov
Multiple Airlines Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
Multiple Airlines Logo
22:15 - 05:30CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
฿9,244Multiple Airlines
Sun 29 Nov - Wed 2 Dec
Air Busan Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
Air Busan Logo
00:10 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 00mdirect
฿9,312Air Busan
Sat 7 Nov - Sun 15 Nov
Air Busan Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
Air Busan Logo
00:10 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 00mdirect
฿9,346Air Busan
Fri 6 Nov - Tue 10 Nov
Multiple Airlines Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
Multiple Airlines Logo
22:20 - 05:30CNX  Chiang Mai-ICN Incheon Intl
5h 10mdirect
฿9,413Multiple Airlines
Fri 6 Nov - Mon 9 Nov
Jeju Air Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
Jeju Air Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿9,447Jeju Air
Fri 13 Nov - Thu 19 Nov
Jeju Air Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
Jeju Air Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿9,481Jeju Air
Fri 6 Nov - Mon 9 Nov
Jeju Air Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
Jeju Air Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿9,514Jeju Air
Fri 6 Nov - Mon 9 Nov
Jeju Air Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
Jeju Air Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
฿9,548Jeju Air
Booking Insights

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

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

What is the cheapest Seoul to Chiang Mai flight route?

Seoul Gimpo Intl Airport (GMP) to Chiang Mai (CNX) is the cheapest Seoul to Chiang Mai route, averaging ฿8,523 return. Other Seoul to Chiang Mai routes average ฿10,993, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Seoul 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 Seoul to Chiang Mai. It’s 8% cheaper than the average day, while Tuesday is the most expensive, with prices 8% higher.

What is the cheapest month to fly from Seoul to Chiang Mai?

•March is the cheapest month to fly from Seoul to Chiang Mai at ฿8,232 return.
•January (฿13,259) and November (฿12,180) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 61% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seoul to Chiang Mai the cheapest?

Flights from Seoul to Chiang Mai are cheapest 6 weeks before departure. Booking in this window typically costs about 6% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Seoul to Chiang Mai flights

Low season

May

Cheapest flight

฿4,285
Beat the crowds with an average 30% drop in traveller numbers.
The most popular month to fly with an average 40% increase in traveller numbers.
One-way flight from Incheon Intl Airport to Chiang Mai

When to book flights from Seoul to Chiang Mai

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

Your Seoul to Chiang Mai flight questions, answered

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

  • What are the earliest and latest flights from Seoul to Chiang Mai?

    These are the earliest and latest flight times available from Seoul to Chiang Mai:

    • Earliest: departs at 16:25 and lands at 22:27
    • Latest: departs at 19:55 and lands at 01:57.

    The flight takes about 6h 02m.

  • Which cabin classes can I book on flights from Seoul to Chiang Mai?

    Only Economy class is available on flights from Seoul to Chiang Mai.

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

    A direct flight from Seoul to Chiang Mai takes 6h 02m, covering 5,512 km.

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

    Return flights from Seoul to Chiang Mai range from ฿9,001 to ฿13,183, with an average of ฿10,985 over the past 12 months. Anything below ฿9,001 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) are 2% below the route average of ฿10,985. Booking late can sometimes save you money, but availability is limited.

  • How much can I save by having a stopover when flying from Seoul to Chiang Mai?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average ฿7,507 return via Bangkok Don Mueang Intl (DMK), compared with ฿11,036 for direct.

  • What is the standard checked bag allowance on flights from Seoul to Chiang Mai?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge ฿764–฿3,374 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • How are flight departures from Seoul to Chiang Mai spread across the day?

    Evening is the busiest departure period on Seoul to Chiang Mai flights, with 75% leaving in that window. Afternoon departures account for 25%, Morning flights for 0%, and Night flights for 0%.

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

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿8,570 to ฿52,025. That means the highest observed fare was about 6x higher than the lowest one.

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

    One-way fares from Seoul to Chiang Mai are currently lower than usual. Average one-way flight prices are about ฿4,504, which is 16% below the typical average for this route.

  • Which car hire options are available at Chiang Mai Airport (CNX)?

    Chiang Mai Airport (CNX) hosts 5 major car rental companies, with daily rates starting from around ฿419 for economy cars. Top options include:

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

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

    Flights from Seoul to Chiang Mai may depart from several airports in Seoul area, including Seoul Gimpo Intl (GMP) and Incheon Intl (ICN). Flights usually arrive at Chiang Mai (CNX).

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

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

    • Beijing Capital (PEK) – 38% of one-stop connections
    • Bangkok Suvarnabhumi (BKK) – 25% of one-stop connections
    • Bangkok Don Mueang Intl (DMK) – 16% of one-stop connections
    • Kuala Lumpur Intl (KUL) – 7% of one-stop connections

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

    Yes. Flexible dates can save you up to 15% on flights from Seoul to Chiang Mai. Wednesday is the cheapest departure day at ฿10,223 return on average, while Tuesday is the most expensive at ฿11,977, a difference of ฿1,754.

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

  • Which airlines fly from Seoul to Chiang Mai?

    6 airlines operate flights between Seoul and Chiang Mai. The airlines offering direct flights on this route include:

    • Jin Air
    • Eastar Jet
    • Korean Air
    • Jeju Air
    • Air Busan
    • Trinity Airways (Formerly T'way Air)

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

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 8h 34m, compared to 8h 55m via Hong Kong Intl (HKG) and 10h 08m via Bangkok Don Mueang Intl (DMK).

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

    Chiang Mai is 2 hours behind Seoul (Indochina Time vs Korean 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 Tha Phae Gate, Chiang Mai Gate, and Chang Puak Gate. These are among the most viewed places in Chiang Mai on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Seoul to Chiang Mai flights?

    Among airlines operating Seoul to Chiang Mai flights:

    • Jeju Air: offers free seat selection
    • Eastar Jet: offers free seat selection
    • Air Busan: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Seoul to Chiang Mai flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Jeju Air: a cabin bag and a checked bag in Economy class
    • Jin Air: a cabin bag and a checked bag in Economy class
    • Eastar Jet: a cabin bag and a checked bag in Economy class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Seoul 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 Tuesday. On this route, Wednesday flights average ฿10,223, about ฿1,754 less than Tuesday fares (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 6 weeks before you fly. On this route, that window historically saves about 6% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seoul to Chiang Mai trip for March. Fares historically average ฿8,232 return in that month – typically ฿5,027 less than the most expensive month, which is January (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Bangkok Don Mueang Intl Airport (DMK) can be cheaper than flying direct. The cheapest stopover option averages ฿7,507 return on this route – about ฿3,528 less than direct flights (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.

    • Le Naview @Prasingh
    • De Lanna Hotel
    • Bodhi Serene, Chiang Mai

More options for your flight from Seoul to Chiang Mai

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

Car rentals in Chiang Mai
Hotels in Chiang Mai