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

Return flights

01 Dec - 11 Dec	Volaris
03 Dec - 18 Dec	Volaris
05 Dec - 16 Dec	Viva
08 Dec - 15 Dec	Volaris
01 Dec - 05 Dec	Viva
07 Dec - 26 Dec	Viva
04 Dec - 27 Dec	Volaris
05 Dec - 07 Dec	Volaris
07 Dec - 20 Dec	Volaris
09 Dec - 16 Dec	Air Canada
22 Dec - 07 Jan	Viva
22 Dec - 06 Jan	Viva
23 Dec - 01 Jan	Viva
30 Dec - 06 Jan	Viva
22 Dec - 05 Jan	Viva
22 Dec - 04 Jan	Viva
16 Dec - 03 Jan	Volaris
26 Dec - 01 Jan	United
17 Dec - 05 Jan	Viva
25 Dec - 01 Jan	United

Also check the deals for one-way flights from Monterrey 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 Monterrey to Seoul in December from 787€

Return flights