Cheapest return flights from Seoul to Chiang Mai in August from $211

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

Return flights

19 Aug - 26 Aug Vietnam Airlines
30 Aug - 10 Sep Eastar Jet direct
30 Aug - 02 Sep Eastar Jet direct
30 Aug - 09 Sep Eastar Jet direct
30 Aug - 03 Sep Eastar Jet direct
19 Aug - 24 Aug Thai VietJet Air
19 Aug - 23 Aug Thai VietJet Air
17 Aug - 24 Aug Thai VietJet Air
20 Aug - 24 Aug Thai AirAsia
04 Aug - 25 Aug Thai VietJet Air
17 Aug - 19 Aug Thai VietJet Air
04 Aug - 18 Aug Thai VietJet Air
25 Aug - 01 Sep Thai VietJet Air
04 Aug - 26 Aug Thai VietJet Air
30 Aug - 13 Sep Eastar Jet direct
30 Aug - 19 Sep Eastar Jet direct
29 Aug - 10 Sep Eastar Jet direct
29 Aug - 02 Sep Eastar Jet direct
29 Aug - 09 Sep Eastar Jet direct
19 Aug - 21 Aug Thai AirAsia

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

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