Cheapest one-way flights from Ontario to San Francisco in January from $31

Best time to book flights for Ontario (ONT) to San Francisco (SFO) flights at AirHint

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

One-Way flights

24 Jan Frontier Airlines direct
11 Jan Frontier Airlines direct
16 Jan Frontier Airlines direct
31 Jan Frontier Airlines direct
23 Jan Frontier Airlines direct
30 Jan Frontier Airlines direct
09 Jan Frontier Airlines direct
17 Jan Frontier Airlines direct
19 Jan Frontier Airlines direct
20 Jan Frontier Airlines direct

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

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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