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

Return flights

31 Dec - 27 Jan	Aeromexico
31 Dec - 24 Jan	Aeromexico
31 Dec - 20 Jan	Aeromexico
31 Dec - 31 Jan	Aeromexico
31 Dec - 25 Jan	Aeromexico
31 Dec - 19 Jan	Aeromexico
31 Dec - 18 Jan	Aeromexico
31 Dec - 26 Jan	Aeromexico
31 Dec - 15 Jan	Aeromexico
05 Dec - 14 Dec	Volaris
01 Dec - 11 Dec	Aeromexico
06 Dec - 13 Dec	Aeromexico
25 Dec - 15 Jan	Aeromexico
06 Dec - 14 Dec	Flair Airlines
01 Dec - 16 Dec	Aeromexico
05 Dec - 23 Dec	Aeromexico
06 Dec - 15 Dec	Viva
01 Dec - 15 Dec	Aeromexico
02 Dec - 11 Dec	Flair Airlines
02 Dec - 09 Dec	Flair Airlines

Also check the deals for one-way flights from Mexico City to Seoul 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 Mexico City to Seoul in December from $899

Return flights