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

Return flights

12 Sep - 19 Sep	Air Canada
15 Sep - 30 Sep	Air Canada
22 Sep - 29 Sep	Air Canada
17 Sep - 30 Sep	Air Canada
22 Sep - 02 Oct	Air Canada
15 Sep - 25 Sep	Air Canada
24 Sep - 01 Oct	Air Canada
29 Sep - 22 Oct	Air Premia
15 Sep - 26 Sep	Air Canada
17 Sep - 26 Sep	Air Canada
21 Sep - 02 Oct	Air Canada
22 Sep - 17 Oct	Air Canada
15 Sep - 19 Sep	Air Canada
19 Sep - 23 Sep	Air Canada
12 Sep - 15 Sep	Air Canada
22 Sep - 20 Oct	Air Canada
30 Sep - 06 Oct	Air Canada
30 Sep - 23 Oct	Air Canada
10 Sep - 30 Oct	Air Canada
30 Sep - 20 Oct	Air Canada

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

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 September from $819

Return flights