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

Return flights

29 Sep - 18 Oct	Spirit Airlines
05 Sep - 21 Sep	Avianca
21 Sep - 26 Sep	Avianca
06 Sep - 14 Sep	Avianca
06 Sep - 11 Oct	Avianca	direct
05 Sep - 14 Sep	Avianca
29 Sep - 18 Oct	Avianca	direct
21 Sep - 26 Sep	Avianca	direct
06 Sep - 11 Sep	Avianca	direct
27 Sep - 11 Oct	Avianca	direct
04 Sep - 15 Sep	Avianca	direct
15 Sep - 25 Sep	Avianca	direct
23 Sep - 28 Sep	Avianca
12 Sep - 21 Sep	Avianca
30 Sep - 06 Oct	Avianca	direct
26 Sep - 07 Oct	Avianca	direct
23 Sep - 07 Oct	United
17 Sep - 01 Oct	United
29 Sep - 13 Oct	United
22 Sep - 06 Oct	United

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to San Salvador in September from $256

Return flights