Cheapest return flights from Seoul to Chiang Mai in August from $544

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

Return flights

20 Aug - 27 Aug Korean Air
20 Aug - 24 Aug Air China
15 Aug - 22 Aug Air China
01 Aug - 04 Aug Air China
03 Aug - 06 Aug Air China
01 Aug - 03 Sep Air China
25 Aug - 08 Sep Air China
27 Aug - 03 Sep Air China
25 Aug - 31 Aug Air China
13 Aug - 17 Aug Air China
08 Aug - 11 Aug Air China
01 Aug - 11 Aug Air China
03 Aug - 11 Aug Air China
24 Aug - 07 Sep Air China
27 Aug - 01 Sep Air China
25 Aug - 01 Sep Air China
10 Aug - 10 Sep Air China
26 Aug - 01 Sep EVA Air
26 Aug - 07 Sep EVA Air
29 Aug - 05 Sep Air China

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

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