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

Return flights

11 Sep - 18 Sep	Avianca
09 Sep - 18 Sep	Avianca
02 Sep - 04 Sep	Avianca
11 Sep - 24 Sep	Avianca
10 Sep - 18 Sep	Avianca
24 Sep - 01 Oct	Avianca
17 Sep - 01 Oct	Avianca
24 Sep - 09 Oct	Avianca
02 Sep - 09 Sep	Avianca
05 Sep - 16 Sep	Avianca
17 Sep - 21 Sep	Avianca
19 Sep - 25 Sep	Avianca
20 Sep - 24 Sep	Avianca
24 Sep - 02 Oct	Avianca
19 Sep - 06 Oct	Avianca
30 Sep - 13 Oct	Avianca
08 Sep - 10 Oct	Avianca
20 Sep - 11 Oct	Avianca
30 Sep - 10 Oct	Avianca
23 Sep - 15 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 242€

Return flights