Cheapest one-way flights from Ontario to San Jose in July from $201

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 July 2025 (see full year).

One-Way flights

02 Jul Frontier Airlines
13 Jul Avianca
15 Jul Avianca
27 Jul Avianca
17 Jul Avianca
01 Jul Avianca
31 Jul Avianca
04 Jul Frontier Airlines
03 Jul Frontier Airlines
30 Jul Southwest Airlines

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

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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