Cheapest return flights from Seoul to Chiang Mai in August from $237

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

Return flights

21 Aug - 25 Aug Thai AirAsia X
22 Aug - 27 Aug Thai AirAsia X
23 Aug - 28 Aug Thai AirAsia X
23 Aug - 26 Aug Thai AirAsia X
30 Aug - 04 Sep Thai AirAsia X
26 Aug - 02 Sep Jeju Air direct
22 Aug - 27 Aug Jeju Air direct
15 Aug - 19 Aug Jeju Air direct
16 Aug - 20 Aug Jeju Air direct
23 Aug - 26 Aug Jeju Air direct
22 Aug - 26 Aug Jeju Air direct
02 Aug - 07 Aug Malaysia Airlines
23 Aug - 09 Sep Eastar Jet direct
23 Aug - 02 Sep Eastar Jet direct
23 Aug - 10 Sep Eastar Jet direct
30 Aug - 09 Sep Eastar Jet direct
30 Aug - 17 Sep Eastar Jet direct
30 Aug - 02 Sep Eastar Jet direct
30 Aug - 16 Sep Eastar Jet direct
30 Aug - 10 Sep Eastar Jet direct

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

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