CNX - SEL

฿3,846 Find Cheap Flights from Chiang Mai to Seoul – Compare and Save

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Everything you should know

Cheapest return flight
฿8,401
Typical prices: ฿10,320-฿15,574
Eastar Jet, Jeju Air
Tue 6/11Fri 9/11
CNX - ICN • Direct
Cheapest one-way flight
฿3,846
Typical prices: ฿5,109-฿8,968
Air Busan
Sun 2/12
CNX - ICN • Direct
Direct flights
Every day
You can fly direct with Jin Air, Eastar Jet, and others. Average duration is 5h 01m.
Direct flights
+1
Direct flights
+1
When to book
19 weeks
in advance
Our data shows that travellers who book at least 19 weeks in advance save around 53% compared to booking last minute.
Insights
Insights
When to travel
May
Cheapest • 18% price drop
March
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Don Mueang Intl (DMK)
Cheapest • Avg ฿4,872 (return)
Bangkok Suvarnabhumi (BKK)
Shortest trip • 8h 18m (one-way)
Insights
Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Seoul!
Flight Deals
Booking Insights
Flight Deals

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

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

Recent return flight deals from Chiang Mai to Seoul

Fri 6 Nov - Mon 9 Nov
Multiple Airlines Logo
22:15 - 05:30CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
Multiple Airlines Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
฿8,401Multiple Airlines
Wed 4 Nov - Sun 8 Nov
Multiple Airlines Logo
22:15 - 05:30CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
Multiple Airlines Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
฿9,447Multiple Airlines
Thu 3 Dec - Sat 12 Dec
Air Busan Logo
00:10 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 00mdirect
Air Busan Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿9,548Air Busan
Mon 2 Nov - Sat 7 Nov
Multiple Airlines Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
Multiple Airlines Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿9,885Multiple Airlines
Fri 6 Nov - Mon 9 Nov
Multiple Airlines Logo
16:30 - 19:25CNX  Chiang Mai-ICN Incheon Intl
24h 55m1 stop Ho Chi Minh City
Multiple Airlines Logo
19:15 - 23:35ICN  Incheon Intl-CNX Chiang Mai
6h 20mdirect
฿9,919Multiple Airlines
Thu 5 Nov - Wed 11 Nov
Multiple Airlines Logo
00:35 - 07:25CNX  Chiang Mai-ICN Incheon Intl
4h 50mdirect
Multiple Airlines Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿9,919Multiple Airlines
Thu 3 Dec - Sat 12 Dec
Air Busan Logo
00:10 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 00mdirect
Air Busan Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿10,088Air Busan
Thu 3 Dec - Sat 12 Dec
Air Busan Logo
00:10 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 00mdirect
Air Busan Logo
19:00 - 23:10ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿10,189Air Busan
Fri 6 Nov - Sat 21 Nov
Eastar Jet Logo
22:15 - 05:30CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
Eastar Jet Logo
17:25 - 21:20ICN  Incheon Intl-CNX Chiang Mai
5h 55mdirect
฿12,989Eastar Jet
Thu 8 Apr - Sat 17 Apr
Eastar Jet Logo
23:55 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
Eastar Jet Logo
18:30 - 22:40ICN  Incheon Intl-CNX Chiang Mai
6h 10mdirect
฿15,419Eastar Jet
Booking Insights

Price, demand, and travel trends for Chiang Mai to Seoul 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 Chiang Mai to Seoul flight route?

There's little price difference between Chiang Mai to Seoul routes. They average around ฿12,624 return, based on KAYAK data over the past 12 months.

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

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Chiang Mai to Seoul. It’s 19% cheaper than the average day, while Friday is the most expensive, with prices 14% higher.

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

•May is the cheapest month to fly from Chiang Mai to Seoul at ฿10,324 return.
•November (฿20,209) and August (฿16,431) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 95% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Chiang Mai to Seoul the cheapest?

Flights from Chiang Mai to Seoul are cheapest 19 weeks before departure. Booking in this window typically costs about 53% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Chiang Mai to Seoul flights

Low season

November

Cheapest flight

฿3,846
Beat the crowds with an average 47% drop in traveller numbers.
The most popular month to fly with an average 63% increase in traveller numbers.
One-way flight from Chiang Mai to Incheon Intl Airport

When to book flights from Chiang Mai to Seoul

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

Your Chiang Mai to Seoul 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 Chiang Mai to Seoul?

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

    • Earliest: departs at 00:10 and lands at 05:11
    • Latest: departs at 23:55 and lands at 04:56.

    The flight takes about 5h 01m.

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

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

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

    A direct flight from Chiang Mai to Seoul takes 5h 01m, covering 5,512 km.

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

    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 Chiang Mai to Seoul flight?

    Return flights from Chiang Mai to Seoul range from ฿10,320 to ฿15,574, with an average of ฿12,624 over the past 12 months. Anything below ฿10,320 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 32% above the ฿12,624 route average. Book 19 weeks before departure for the lowest fares.

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

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average ฿4,872 return via Bangkok Don Mueang Intl (DMK), compared with ฿12,588 for direct.

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

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge ฿762–฿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 Chiang Mai to Seoul spread across the day?

    Night is the busiest departure period on Chiang Mai to Seoul flights, with 100% leaving in that window. Morning departures account for 0%, Afternoon flights for 0%, and Evening flights for 0%.

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

    One-way fares from Chiang Mai to Seoul are currently lower than usual. Average one-way flight prices are about ฿4,106, which is 41% below the typical average for this route.

  • What car rental options are available in Seoul?

    Since Seoul is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Incheon Intl Airport (ICN) – daily rates from around ฿406:

    • WECAR
    • Wheego
    • Yesaway
    • Alamo
    • Enterprise Rent-A-Car

    Near Seoul Gimpo Intl Airport (GMP) – daily rates from around ฿390:

    • Wheego
    • Yesaway
    • Hi Rent
    • Europcar
    • Cartago Rent A Car

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

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

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

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

    • Bangkok Don Mueang Intl (DMK) – 47% of one-stop connections
    • Bangkok Suvarnabhumi (BKK) – 21% of one-stop connections
    • Guangzhou Baiyun (CAN) – 11% of one-stop connections
    • Hong Kong Intl (HKG) – 5% of one-stop connections

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

    Yes. Flexible dates can save you up to 29% on flights from Chiang Mai to Seoul. Thursday is the cheapest departure day at ฿10,324 return on average, while Friday is the most expensive at ฿14,406, a difference of ฿4,082.

    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 Chiang Mai to Seoul?

    6 airlines operate flights between Chiang Mai and Seoul. 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 Chiang Mai to Seoul?

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 8h 18m, compared to 9h 09m via Guangzhou Baiyun (CAN) and 9h 35m via Bangkok Don Mueang Intl (DMK).

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

    Seoul is 2 hours ahead of Chiang Mai (Korean Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Seoul?

    Gyeongbokgung Palace is one of the most viewed places in Seoul on KAYAK.

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

    Among airlines operating Chiang Mai to Seoul flights:

    • Eastar Jet: 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 Chiang Mai to Seoul 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
    • Eastar Jet: a cabin bag and a checked bag in Economy class
    • Air Busan: 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 Chiang Mai to Seoul 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 Thursday departure and avoid flying on Friday. On this route, Thursday flights average ฿10,324, about ฿4,082 less than Friday fares (28% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 19 weeks before you fly. On this route, that window historically saves about 53% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Chiang Mai to Seoul trip for May. Fares historically average ฿10,324 return in that month – typically ฿9,885 less than the most expensive month, which is November (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 ฿4,872 return on this route – about ฿7,716 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near Incheon Intl Airport

    • Grand Hyatt Incheon
    • Best Western Premier Incheon Airport
    • Hotel Hu Incheon Airport

    Near Seoul Gimpo Intl Airport

    • Intercity Seoul Hotel
    • LOTTE City Hotel Gimpo Airport
    • Mayfield Hotel & Resort Seoul

More options for your flight from Chiang Mai to Seoul

Complete your trip to Seoul with a hotel stay or car hire

Car rentals in Seoul
Hotels in Seoul