Cheapest return flights from San Francisco to Ontario in July from $57

AirHint found the following cheapest return flights from San Francisco (SFO) to Ontario (ONT) in July 2025 (see full year).

Return flights

26 Jul - 29 Jul United direct
29 Jul - 30 Jul United direct
29 Jul - 05 Aug United direct
28 Jul - 03 Aug Frontier Airlines direct
15 Jul - 17 Jul United direct
14 Jul - 21 Jul Frontier Airlines direct
15 Jul - 22 Jul United direct
14 Jul - 28 Jul Frontier Airlines direct
25 Jul - 28 Jul Frontier Airlines direct
28 Jul - 29 Jul United direct
28 Jul - 30 Jul United direct
31 Jul - 04 Aug Frontier Airlines
15 Jul - 15 Jul United direct
30 Jul - 31 Aug Frontier Airlines
29 Jul - 01 Aug Frontier Airlines
31 Jul - 03 Aug Frontier Airlines
31 Jul - 04 Aug United direct
31 Jul - 05 Aug Frontier Airlines
24 Jul - 01 Aug Frontier Airlines
30 Jul - 02 Aug Frontier Airlines

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

Skyscanner

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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