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

Return flights

16 Aug - 19 Aug	Spirit Airlines
13 Aug - 19 Aug	Spirit Airlines
12 Aug - 19 Aug	Spirit Airlines
28 Aug - 03 Sep	Spirit Airlines
29 Aug - 02 Sep	Copa
29 Aug - 01 Sep	Spirit Airlines
07 Aug - 12 Aug	Frontier Airlines
09 Aug - 12 Aug	Spirit Airlines
02 Aug - 09 Aug	Spirit Airlines

Also check the deals for one-way flights from Chicago 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 Chicago to San Salvador in August from 164€

Return flights