Cheapest return flights from Ontario to San Jose in November from $705

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

AirHint found the following cheapest return flights from Ontario (ONT) to San Jose (SJO) in November 2025 (see full year).

Return flights

25 Nov - 01 Dec Avianca

Also check the deals for one-way flights from Ontario to San Jose in November.

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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