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

Return flights

17 Aug - 23 Aug	Avianca	direct
23 Aug - 28 Aug	Frontier Airlines
21 Aug - 26 Aug	Avianca	direct
14 Aug - 23 Aug	Frontier Airlines
28 Aug - 11 Sep	United
21 Aug - 04 Sep	United
25 Aug - 08 Sep	United
26 Aug - 09 Sep	United
05 Aug - 19 Aug	United
07 Aug - 21 Aug	United
13 Aug - 27 Aug	United
20 Aug - 03 Sep	United
06 Aug - 20 Aug	United
08 Aug - 22 Aug	United
09 Aug - 23 Aug	United
30 Aug - 13 Sep	United
23 Aug - 06 Sep	United
22 Aug - 05 Sep	United
29 Aug - 12 Sep	United
18 Aug - 01 Sep	United

Also check the deals for one-way flights from Ontario 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 Ontario to San Salvador in August from 265€

Return flights