Cheapest one-way flights from Ontario to San Jose in October from $207

Best time to book flights for Ontario (ONT) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest one-way flights from Ontario (ONT) to San Jose (SJO) in October 2025 (see full year).

One-Way flights

04 Oct Avianca

Also check the deals for return flights from Ontario to San Jose in October.

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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