AirHint found the following cheapest return flights from Mexico City (MEX) to Seoul (ICN) in September 2026 (see full year).

Return flights

17 Sep - 05 Oct	Aeromexico
22 Sep - 08 Oct	United
22 Sep - 04 Oct	United
22 Sep - 07 Oct	United
20 Sep - 01 Oct	United
21 Sep - 09 Oct	United
02 Sep - 09 Sep	United
01 Sep - 14 Sep	United
30 Sep - 16 Oct	United
30 Sep - 27 Oct	United
17 Sep - 21 Oct	Aeromexico
02 Sep - 15 Sep	United
08 Sep - 15 Sep	United
20 Sep - 20 Oct	United
01 Sep - 25 Sep	Aeromexico
01 Sep - 16 Sep	United
01 Sep - 15 Sep	United
02 Sep - 16 Sep	United
01 Sep - 11 Sep	United
08 Sep - 23 Sep	Aeromexico

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 1147€

Return flights