Cheapest one-way flights from Ontario to San Jose in October from 157€

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

One-Way flights

14 Oct Southwest Airlines
06 Oct Southwest Airlines
20 Oct Southwest Airlines
18 Oct Avianca
25 Oct Southwest Airlines
15 Oct Southwest Airlines
16 Oct Southwest Airlines
17 Oct Southwest Airlines
19 Oct Southwest Airlines
08 Oct Southwest Airlines

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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