AirHint found the following cheapest one-way flights from Chiang Mai (CNX) to Seoul (ICN) in December 2025 (see full year).
One-Way flights
| 20 Dec | Thai AirAsia | ||
| 01 Dec | Cebu Pacific | ||
| 18 Dec | Nok Air | ||
| 10 Dec | Thai AirAsia | ||
| 12 Dec | HK Express | ||
| 07 Dec | Nok Air | ||
| 05 Dec | HK Express | ||
| 24 Dec | Thai AirAsia | ||
| 06 Dec | HK Express | ||
| 16 Dec | HK Express |
Also check the deals for return flights from Chiang Mai to Seoul in December.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
Find us on social media