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

Return flights

29 Aug - 09 Sep	Avianca	direct
28 Aug - 29 Aug	Copa
28 Aug - 31 Aug	Copa
31 Aug - 03 Sep	Copa
28 Aug - 01 Sep	Copa
31 Aug - 02 Sep	Copa
29 Aug - 02 Sep	Copa
29 Aug - 01 Sep	Copa
30 Aug - 01 Sep	Copa
28 Aug - 31 Aug	Avianca	direct
30 Aug - 31 Aug	Copa

Also check the deals for one-way flights from San Jose to San Salvador in August.

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 San Jose to San Salvador in August from $206

Return flights