Cheapest return flights from Seoul to Chiang Mai in October from $181

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

Return flights

18 Oct - 21 Oct AirAsia X
18 Oct - 22 Oct AirAsia X
20 Oct - 22 Oct AirAsia X
08 Oct - 13 Oct AirAsia X
18 Oct - 21 Oct Jeju Air direct
17 Oct - 21 Oct Jeju Air direct
25 Oct - 30 Oct Thai AirAsia X
16 Oct - 20 Oct Thai AirAsia X
15 Oct - 19 Oct Thai AirAsia X
26 Oct - 30 Oct Thai AirAsia X
31 Oct - 04 Nov Thai AirAsia X
30 Oct - 07 Nov Thai AirAsia X
25 Oct - 01 Nov Thai AirAsia X
15 Oct - 04 Nov Thai VietJet Air
12 Oct - 30 Nov AirAsia X
30 Oct - 01 Nov China Airlines
30 Oct - 07 Nov Korean Air direct
31 Oct - 04 Nov Korean Air direct
30 Oct - 01 Nov Korean Air direct
25 Oct - 01 Nov Korean Air direct

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

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