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

Return flights

26 Feb - 06 Mar	Thai AirAsia
26 Feb - 08 Mar	Thai AirAsia
24 Feb - 06 Mar	Thai AirAsia
24 Feb - 08 Mar	Thai AirAsia
24 Feb - 12 Mar	Thai AirAsia
26 Feb - 12 Mar	Thai AirAsia
13 Feb - 20 Feb	Cebu Pacific
27 Feb - 06 Mar	Eastar Jet
27 Feb - 08 Mar	Eastar Jet
25 Feb - 06 Mar	Eastar Jet
25 Feb - 08 Mar	Eastar Jet
12 Feb - 19 Feb	Malaysia Airlines
04 Feb - 05 Feb	Thai AirAsia
18 Feb - 25 Feb	HK Express
01 Feb - 05 Feb	Thai AirAsia
15 Feb - 22 Feb	Thai Airways
16 Feb - 23 Feb	Nok Air
04 Feb - 07 Feb	Thai AirAsia
05 Feb - 07 Feb	Thai AirAsia
01 Feb - 07 Feb	Thai AirAsia

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

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 February from 283€

Return flights