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

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

One-Way flights

06 Aug United direct
07 Aug United direct
05 Aug United direct
21 Aug Frontier Airlines direct
22 Aug Frontier Airlines direct
24 Aug Frontier Airlines direct
25 Aug Frontier Airlines direct
28 Aug Frontier Airlines direct
31 Aug Frontier Airlines direct
11 Aug Frontier Airlines direct

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

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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