Cheapest return flights from Ontario to San Jose in July from $442

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 July 2025 (see full year).

Return flights

17 Jul - 22 Jul Avianca
15 Jul - 22 Jul Avianca
24 Jul - 29 Jul Avianca
08 Jul - 12 Jul Avianca
12 Jul - 19 Jul Avianca
22 Jul - 27 Jul Avianca
26 Jul - 02 Aug Avianca
01 Jul - 07 Jul Avianca
22 Jul - 30 Jul Southwest Airlines
18 Jul - 26 Jul Volaris
09 Jul - 22 Jul Southwest Airlines
23 Jul - 01 Aug Southwest Airlines
24 Jul - 01 Aug Avianca

Also check the deals for one-way 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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