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

Return flights

24 Feb - 06 Mar	Thai AirAsia
24 Feb - 01 Mar	Thai AirAsia
22 Feb - 06 Mar	Thai AirAsia
22 Feb - 01 Mar	Thai AirAsia
26 Feb - 06 Mar	Jin Air
26 Feb - 01 Mar	Jin Air
10 Feb - 01 Mar	Thai AirAsia
25 Feb - 06 Mar	Eastar Jet
25 Feb - 01 Mar	Eastar Jet
27 Feb - 06 Mar	Thai AirAsia
05 Feb - 11 Feb	HK Express
04 Feb - 11 Feb	HK Express
05 Feb - 08 Feb	HK Express
03 Feb - 09 Feb	Thai AirAsia
03 Feb - 24 Feb	Thai AirAsia
08 Feb - 24 Feb	Thai AirAsia
03 Feb - 07 Feb	Thai AirAsia
22 Feb - 24 Feb	Thai AirAsia
03 Feb - 21 Feb	Thai AirAsia
03 Feb - 08 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 $309

Return flights