Cheapest return flights from San Francisco to Ontario in August from 247€

AirHint found the following cheapest return flights from San Francisco (SFO) to Ontario (ONT) in August 2026 (see full year).

Return flights

05 Aug - 08 Aug Southwest Airlines
18 Aug - 23 Aug Southwest Airlines
16 Aug - 18 Aug Southwest Airlines
14 Aug - 18 Aug Southwest Airlines
17 Aug - 23 Aug Southwest Airlines
14 Aug - 17 Aug Southwest Airlines
27 Aug - 28 Aug Southwest Airlines
28 Aug - 28 Aug Southwest Airlines
29 Aug - 30 Aug Southwest Airlines
06 Aug - 09 Aug Southwest Airlines

Also check the deals for one-way flights from San Francisco to Ontario in August.

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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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