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

Return flights

09 Feb - 10 Feb	AirAsia X
23 Feb - 11 Mar	AirAsia X
23 Feb - 13 Mar	AirAsia X
23 Feb - 12 Mar	AirAsia X
23 Feb - 10 Mar	AirAsia X
23 Feb - 09 Mar	AirAsia X
23 Feb - 06 Mar	AirAsia X
23 Feb - 05 Mar	AirAsia X
06 Feb - 10 Feb	AirAsia X
24 Feb - 11 Mar	AirAsia X
24 Feb - 13 Mar	AirAsia X
24 Feb - 12 Mar	AirAsia X
06 Feb - 09 Feb	AirAsia X
05 Feb - 10 Feb	Philippines AirAsia Inc.
05 Feb - 08 Feb	Philippines AirAsia Inc.
09 Feb - 11 Feb	AirAsia X
06 Feb - 07 Feb	AirAsia X
06 Feb - 11 Feb	AirAsia X
10 Feb - 11 Feb	AirAsia X
03 Feb - 10 Feb	Philippines AirAsia Inc.

Also check the deals for one-way flights from Seoul to Chiang Mai 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 Seoul to Chiang Mai in February from $298

Return flights