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

Return flights

18 Sep - 23 Sep	Avianca
24 Sep - 02 Oct	Avianca
02 Sep - 19 Sep	Avianca
24 Sep - 30 Sep	Avianca
24 Sep - 01 Oct	Avianca
03 Sep - 16 Sep	Avianca
18 Sep - 26 Sep	Avianca
23 Sep - 30 Sep	Avianca
27 Sep - 04 Oct	Avianca
19 Sep - 28 Sep	Avianca
26 Sep - 28 Sep	Avianca
07 Sep - 15 Sep	Avianca
02 Sep - 18 Sep	Copa
23 Sep - 01 Oct	Avianca
26 Sep - 05 Oct	Avianca
11 Sep - 26 Oct	Avianca
26 Sep - 03 Oct	Avianca
20 Sep - 01 Oct	Avianca
23 Sep - 03 Oct	Avianca
29 Sep - 01 Oct	Avianca

Also check the deals for one-way flights from Mexico City to Lima 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 Lima in September from 221€

Return flights