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

Return flights

15 Jan - 20 Jan	Thai AirAsia
15 Jan - 22 Jan	Thai AirAsia
12 Jan - 20 Jan	Thai AirAsia
12 Jan - 13 Jan	Thai AirAsia
12 Jan - 15 Jan	Thai AirAsia
12 Jan - 22 Jan	Thai AirAsia
13 Jan - 20 Jan	Thai AirAsia
13 Jan - 15 Jan	Thai AirAsia
13 Jan - 22 Jan	Thai AirAsia
15 Jan - 03 Feb	Thai AirAsia
13 Jan - 03 Feb	Thai AirAsia
21 Jan - 22 Jan	Thai AirAsia
28 Jan - 03 Feb	Thai AirAsia
28 Jan - 10 Feb	Thai AirAsia
29 Jan - 03 Feb	Thai AirAsia
29 Jan - 10 Feb	Thai AirAsia
21 Jan - 03 Feb	Thai AirAsia
21 Jan - 10 Feb	Thai AirAsia
14 Jan - 03 Feb	Thai AirAsia
16 Jan - 03 Feb	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 253€

Return flights