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

Return flights

14 Dec - 28 Dec	Aeromexico
07 Dec - 26 Dec	Aeromexico
23 Dec - 30 Dec	Air Canada
03 Dec - 18 Dec	Aeromexico
24 Dec - 31 Dec	Aeromexico
17 Dec - 10 Jan	Aeromexico
18 Dec - 10 Jan	Aeromexico
19 Dec - 29 Dec	Aeromexico
24 Dec - 05 Jan	Aeromexico
06 Dec - 03 Jan	Aeromexico
06 Dec - 29 Dec	Delta
04 Dec - 27 Dec	Delta
17 Dec - 30 Dec	Delta
05 Dec - 19 Dec	Delta
17 Dec - 05 Jan	Delta
30 Dec - 02 Jan	Delta
19 Dec - 03 Jan	Delta

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 1705€

Return flights