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

Return flights

30 Sep - 03 Oct	Volaris Costa Rica	direct
14 Sep - 18 Sep	Volaris El Salvador	direct
12 Sep - 15 Sep	Volaris El Salvador	direct
22 Sep - 24 Sep	Volaris El Salvador	direct
17 Sep - 19 Sep	Volaris El Salvador	direct
06 Sep - 13 Sep	Volaris Costa Rica	direct
01 Sep - 08 Sep	Avianca
02 Sep - 30 Sep	Copa
27 Sep - 30 Sep	Copa
19 Sep - 24 Sep	Copa
11 Sep - 16 Sep	Copa
24 Sep - 05 Oct	Copa

Also check the deals for one-way flights from San Jose 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.

Book a cheap hotel in San Salvador

Cheap car rent in San Salvador

Cheapest return flights from San Jose to San Salvador in September from $185

Return flights