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

Return flights

11 Sep - 20 Sep	Avianca	direct
12 Sep - 14 Sep	Avianca	direct
05 Sep - 12 Sep	Avianca	direct
01 Sep - 07 Sep	Avianca
12 Sep - 17 Sep	Avianca	direct
02 Sep - 07 Sep	Copa
05 Sep - 10 Sep	Avianca
18 Sep - 24 Sep	Avianca
12 Sep - 20 Sep	Avianca	direct
17 Sep - 24 Sep	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 270€

Return flights