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

Return flights

23 Sep - 07 Oct	United
22 Sep - 06 Oct	United
02 Sep - 16 Sep	United
03 Sep - 17 Sep	United
08 Sep - 22 Sep	United
30 Sep - 14 Oct	United
25 Sep - 29 Sep	United
10 Sep - 24 Sep	United
17 Sep - 01 Oct	United
25 Sep - 28 Sep	Spirit Airlines
13 Sep - 16 Sep	Spirit Airlines
26 Sep - 28 Sep	Frontier Airlines
21 Sep - 30 Sep	United
17 Sep - 26 Sep	American Airlines
29 Sep - 03 Oct	United
24 Sep - 08 Oct	United
18 Sep - 02 Oct	United
29 Sep - 13 Oct	United
28 Sep - 12 Oct	United
20 Sep - 04 Oct	United

Also check the deals for one-way flights from New York 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 New York to San Salvador in September from $224

Return flights