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

Return flights

01 Dec - 06 Dec	Air Canada
01 Dec - 08 Dec	United
01 Dec - 09 Dec	United
01 Dec - 11 Dec	Air Canada
25 Dec - 01 Jan	United
01 Dec - 12 Dec	Air Canada
26 Dec - 31 Dec	United
29 Dec - 05 Jan	United
14 Dec - 25 Dec	Air Canada
08 Dec - 17 Dec	Air Canada
13 Dec - 24 Dec	Air Canada
14 Dec - 24 Dec	Air Canada
31 Dec - 07 Jan	United
30 Dec - 06 Jan	United
24 Dec - 06 Jan	Korean Air
30 Dec - 07 Jan	Korean Air
22 Dec - 01 Jan	Korean Air
25 Dec - 03 Jan	United
27 Dec - 01 Jan	Korean Air
26 Dec - 03 Jan	United

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 $971

Return flights