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

Return flights

14 Aug - 28 Aug	Aeromexico
18 Aug - 27 Aug	Aeromexico
30 Aug - 13 Sep	Volaris
11 Aug - 18 Aug	Aeromexico
07 Aug - 25 Aug	Aeromexico
17 Aug - 28 Aug	Aeromexico
13 Aug - 20 Aug	Aeromexico
13 Aug - 27 Aug	Viva
06 Aug - 24 Aug	Aeromexico
18 Aug - 26 Aug	Aeromexico
05 Aug - 26 Aug	Hawaiian Airlines
29 Aug - 16 Sep	Aeromexico

Also check the deals for one-way flights from Monterrey to Seoul in August.

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 August from $1059

Return flights