Cheapest return flights from Ontario to San Jose in June from 537€

AirHint found the following cheapest return flights from Ontario (ONT) to San Jose (SJO) in June 2026 (see full year).

Return flights

19 Jun - 21 Jul Southwest Airlines
01 Jun - 06 Jun Southwest Airlines
08 Jun - 15 Jun Southwest Airlines
04 Jun - 13 Jun Southwest Airlines
02 Jun - 11 Jun Southwest Airlines
19 Jun - 10 Jul Southwest Airlines
02 Jun - 07 Jun Southwest Airlines
25 Jun - 28 Jun Southwest Airlines
03 Jun - 05 Jun Southwest Airlines

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

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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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