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

Return flights

22 Oct - 06 Nov	Air Canada
06 Oct - 22 Oct	Air Canada
07 Oct - 22 Oct	Air Canada
20 Oct - 27 Oct	Air Canada
14 Oct - 24 Nov	Air Canada
22 Oct - 04 Nov	Air Canada
09 Oct - 22 Oct	Air Canada
15 Oct - 23 Oct	United
22 Oct - 30 Oct	United
20 Oct - 28 Oct	United
23 Oct - 27 Oct	United
09 Oct - 20 Oct	United
13 Oct - 29 Oct	United
29 Oct - 05 Nov	United
27 Oct - 11 Nov	United
22 Oct - 05 Nov	United
29 Oct - 12 Nov	United
28 Oct - 11 Nov	United
30 Oct - 02 Nov	United
29 Oct - 08 Nov	United

Also check the deals for one-way flights from Seoul to Mexico City 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 Seoul to Mexico City in October from 602€

Return flights