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

Return flights

06 Sep - 14 Sep	Aeromexico
08 Sep - 22 Sep	Viva
05 Sep - 21 Sep	Viva
09 Sep - 23 Oct	Volaris
09 Sep - 24 Sep	Volaris
04 Sep - 22 Sep	Viva
03 Sep - 19 Sep	Volaris
03 Sep - 29 Oct	Aeromexico
07 Sep - 18 Sep	Viva
13 Sep - 20 Sep	Aeromexico
10 Sep - 21 Sep	Aeromexico
10 Sep - 24 Sep	Aeromexico
23 Sep - 17 Oct	Viva
19 Sep - 11 Oct	Volaris
19 Sep - 04 Oct	Viva
26 Sep - 11 Oct	Aeromexico
01 Sep - 16 Oct	Viva
21 Sep - 02 Oct	Aeromexico
01 Sep - 17 Oct	Viva
24 Sep - 11 Oct	Volaris

Also check the deals for one-way flights from Mexico City to Seoul 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 Mexico City to Seoul in September from $958

Return flights