AirHint found the following cheapest return flights from Chiang Mai (CNX) to Seoul (ICN) in January 2026 (see full year).

Return flights

13 Jan - 20 Jan	HK Express
10 Jan - 14 Jan	HK Express
08 Jan - 11 Jan	HK Express
09 Jan - 14 Jan	HK Express
09 Jan - 13 Jan	HK Express
20 Jan - 05 Feb	Thai AirAsia
15 Jan - 05 Feb	Thai AirAsia
22 Jan - 05 Feb	Thai AirAsia
21 Jan - 05 Feb	Thai AirAsia
29 Jan - 05 Feb	Thai AirAsia
19 Jan - 05 Feb	Thai AirAsia
27 Jan - 05 Feb	Thai AirAsia
30 Jan - 05 Feb	Thai AirAsia
31 Jan - 05 Feb	Thai AirAsia
24 Jan - 05 Feb	Thai AirAsia
19 Jan - 23 Jan	Thai AirAsia
18 Jan - 23 Jan	HK Express
06 Jan - 15 Jan	HK Express
20 Jan - 26 Jan	Thai AirAsia
15 Jan - 26 Jan	Thai AirAsia

Also check the deals for one-way flights from Chiang Mai to Seoul in January.

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.

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Cheapest return flights from Chiang Mai to Seoul in January from 275€

Return flights