AirHint found the following cheapest return flights from San Salvador (SAL) to Lima (LIM) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep	Avianca
18 Sep - 29 Sep	Avianca
27 Sep - 02 Oct	Avianca	direct
30 Sep - 28 Oct	Avianca
05 Sep - 12 Sep	Copa
05 Sep - 19 Sep	Copa
10 Sep - 24 Sep	Copa
16 Sep - 23 Sep	Copa
29 Sep - 01 Oct	Copa
25 Sep - 02 Oct	Copa
18 Sep - 29 Sep	Avianca	direct
30 Sep - 28 Oct	Avianca	direct
08 Sep - 15 Sep	Avianca	direct
23 Sep - 29 Sep	Avianca
09 Sep - 15 Sep	Avianca
25 Sep - 02 Oct	Avianca	direct

Also check the deals for one-way flights from San Salvador 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 San Salvador to Lima in September from $364

Return flights