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

Return flights

23 Sep - 01 Oct	Volaris El Salvador	direct
23 Sep - 08 Oct	Volaris El Salvador	direct
27 Sep - 11 Oct	United	direct
18 Sep - 26 Sep	American Airlines
18 Sep - 03 Oct	American Airlines
23 Sep - 26 Sep	Spirit Airlines
11 Sep - 26 Sep	Spirit Airlines
18 Sep - 01 Oct	Spirit Airlines
11 Sep - 01 Oct	Spirit Airlines
06 Sep - 20 Sep	United
14 Sep - 26 Sep	Spirit Airlines
14 Sep - 01 Oct	Spirit Airlines
23 Sep - 07 Oct	United
17 Sep - 01 Oct	United
16 Sep - 30 Sep	United
23 Sep - 03 Oct	Spirit Airlines
03 Sep - 10 Sep	United
12 Sep - 22 Sep	Spirit Airlines
23 Sep - 30 Sep	United
13 Sep - 26 Sep	Lufthansa

Also check the deals for one-way flights from Newark 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 Newark to San Salvador in September from $179

Return flights