AirHint found the following cheapest return flights from Seoul (ICN) to Cancun (CUN) in December 2025 (see full year).

Return flights

02 Dec - 29 Dec	Air Canada
15 Dec - 20 Jan	Air Canada
16 Dec - 19 Jan	Air Canada
15 Dec - 30 Dec	Air Canada
14 Dec - 30 Dec	Air Canada
14 Dec - 31 Dec	Air Canada
13 Dec - 30 Dec	Air Canada
15 Dec - 16 Jan	Air Canada
14 Dec - 29 Dec	Air Canada
25 Dec - 31 Dec	Korean Air
19 Dec - 26 Dec	Zipair
14 Dec - 24 Dec	Air France
15 Dec - 26 Dec	Air France
28 Dec - 04 Jan	Emirates
20 Dec - 02 Jan	Emirates

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Seoul to Cancun in December from $1085

Return flights