Cheapest return flights from Ontario to San Jose in August from $462

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 August 2025 (see full year).

Return flights

16 Aug - 23 Aug Avianca
28 Aug - 31 Aug Avianca
12 Aug - 26 Aug Avianca
31 Aug - 13 Sep Avianca
10 Aug - 15 Aug Lufthansa
28 Aug - 05 Sep Lufthansa
31 Aug - 14 Sep Lufthansa
22 Aug - 29 Aug Southwest Airlines
01 Aug - 08 Aug Lufthansa
29 Aug - 06 Sep Southwest Airlines
23 Aug - 30 Aug Southwest Airlines
11 Aug - 17 Aug Volaris

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

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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