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

Return flights

12 Sep - 16 Sep	Copa
16 Sep - 24 Sep	Copa
08 Sep - 15 Sep	Copa
17 Sep - 25 Sep	Copa
13 Sep - 22 Sep	Copa
14 Sep - 20 Sep	Copa
17 Sep - 27 Sep	Copa
10 Sep - 17 Sep	Copa
05 Sep - 11 Sep	Copa
05 Sep - 13 Sep	Copa
27 Sep - 05 Oct	Copa
26 Sep - 02 Oct	Copa
25 Sep - 04 Oct	Copa
25 Sep - 02 Oct	Copa
26 Sep - 05 Oct	Copa
25 Sep - 02 Oct	Avianca	direct
30 Sep - 05 Oct	Avianca
30 Sep - 04 Oct	Avianca
29 Sep - 04 Oct	Avianca
30 Sep - 06 Oct	Avianca

Also check the deals for one-way flights from Lima to San Salvador 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 Lima to San Salvador in September from $379

Return flights