Cheapest return flights from Seoul to Chiang Mai in December from $373

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

Return flights

09 Dec - 13 Dec China Airlines
08 Dec - 21 Dec China Airlines
04 Dec - 07 Dec China Airlines
05 Dec - 12 Dec China Airlines
06 Dec - 10 Dec China Airlines
14 Dec - 18 Dec China Airlines
11 Dec - 16 Dec China Airlines
17 Dec - 22 Dec China Airlines
04 Dec - 09 Dec China Airlines
03 Dec - 08 Dec China Airlines
11 Dec - 14 Jan China Airlines
13 Dec - 17 Jan China Airlines
26 Dec - 02 Jan China Airlines
31 Dec - 03 Jan China Airlines
20 Dec - 01 Jan China Airlines
20 Dec - 02 Jan China Airlines
20 Dec - 03 Jan China Airlines
21 Dec - 02 Jan China Airlines
26 Dec - 01 Jan China Airlines
25 Dec - 01 Jan China Airlines

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

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