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

Return flights

26 Feb - 01 Mar	Eastar Jet
26 Feb - 06 Mar	Eastar Jet
11 Feb - 01 Mar	Eastar Jet
09 Feb - 01 Mar	Jin Air
13 Feb - 01 Mar	Thai AirAsia
27 Feb - 02 Mar	HK Express
22 Feb - 06 Mar	Jin Air
14 Feb - 01 Mar	Eastar Jet
14 Feb - 06 Mar	Eastar Jet
24 Feb - 01 Mar	Eastar Jet
04 Feb - 23 Feb	Eastar Jet	direct
04 Feb - 09 Feb	Eastar Jet	direct
04 Feb - 24 Feb	Eastar Jet	direct
11 Feb - 23 Feb	Eastar Jet	direct
11 Feb - 24 Feb	Eastar Jet	direct
13 Feb - 22 Feb	Malaysia Airlines
07 Feb - 23 Feb	AirAsia
07 Feb - 09 Feb	AirAsia
07 Feb - 24 Feb	AirAsia
09 Feb - 23 Feb	Jin Air	direct

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 285€

Return flights