Cheapest one-way flights from Ontario to San Francisco in July from $28

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

One-Way flights

15 Jul United direct
08 Jul United direct
14 Jul United direct
29 Jul United direct
30 Jul United direct
07 Jul Frontier Airlines direct
18 Jul Frontier Airlines direct
21 Jul Frontier Airlines direct
25 Jul Frontier Airlines direct
28 Jul Frontier Airlines direct

Also check the deals for return flights from Ontario to San Francisco 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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