Cheap flight from Chiang Mai to Seoul from $135

Frequently Asked Questions

• Which airlines offer direct flights from Chiang Mai to Seoul?

  At the moment, you can catch a nonstop flight from Chiang Mai to Seoul with the following airlines, including: Eastar Jet Jeju Air Jin Air Thai Vietjet Air Thai AirAsia Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Chiang Mai (CNX) to Seoul (SEL) and what is the distance?

  It takes around 5 hours 4 minutes to fly from Chiang Mai (CNX) to Seoul (SEL).

• When is the best time to book flights from Chiang Mai to Seoul?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chiang Mai to Seoul is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Chiang Mai to Seoul?

  Based on Trip.com data in the past 4 weeks, there is 10 flight per week flying from Chiang Mai to Seoul. You can check the weekly schedule for popular airlines on this route below: Jin Air: S/M/T/W/T/F/S -- LJ010 (21:49)

• When are flight tickets from Chiang Mai (CNX) to Seoul (SEL) the cheapest?

  The cheapest months to fly from Chiang Mai to Seoul is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Chiang Mai to Seoul on?

  After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Chiang Mai to Seoul on November 22, 2025 with AirAsia Berhad (Malaysia), with prices starting at $103.

• Which airports can I fly to for Seoul from Chiang Mai?

  You can land at any one of the following hubs in Seoul, with Chiang Mai International Airport to Incheon International Airport (CNX-ICN) is by far the most common option on this route: Incheon International Airport (ICN) Gimpo International Airport (GMP).

• Is there any time difference between Chiang Mai and Seoul?

  The time difference between Seoul and Chiang Mai is 2h.

• How do I change or cancel my ticket from Chiang Mai to Seoul?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.