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

Return flights

25 Dec - 13 Jan	Air Canada
06 Dec - 20 Dec	Air Canada
12 Dec - 31 Dec	Aeromexico
25 Dec - 01 Jan	Air Canada
26 Dec - 11 Jan	Aeromexico
04 Dec - 27 Dec	Aeromexico
20 Dec - 05 Jan	Aeromexico
19 Dec - 30 Dec	Korean Air
03 Dec - 15 Jan	Delta
01 Dec - 16 Dec	Delta
19 Dec - 31 Dec	Korean Air
03 Dec - 15 Dec	Delta
24 Dec - 01 Jan	Delta
03 Dec - 12 Dec	Delta
12 Dec - 03 Jan	Aeromexico
19 Dec - 01 Jan	Delta
28 Dec - 04 Jan	Delta
07 Dec - 26 Dec	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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Monterrey to Seoul in December from 1557€

Return flights