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

Return flights

27 Oct - 09 Nov	Viva
21 Oct - 06 Nov	Viva
01 Oct - 01 Nov	Aeromexico
22 Oct - 15 Nov	Aeromexico
27 Oct - 07 Nov	Viva
29 Oct - 22 Nov	Aeromexico
25 Oct - 31 Oct	Aeromexico
30 Oct - 02 Nov	Viva
01 Oct - 08 Oct	Aeromexico
22 Oct - 07 Nov	Aeromexico
18 Oct - 27 Oct	Viva
16 Oct - 22 Oct	Viva
15 Oct - 22 Oct	Aeromexico
24 Oct - 07 Nov	Aeromexico
14 Oct - 21 Oct	Volaris
02 Oct - 11 Oct	Aeromexico
24 Oct - 28 Nov	Aeromexico
03 Oct - 10 Oct	Viva
05 Oct - 17 Oct	Aeromexico
01 Oct - 11 Oct	Viva

Also check the deals for one-way flights from Mexico City to Seoul in October.

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 October from 966€

Return flights