Cheapest return flights from Ontario to San Jose in June from $513

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

Return flights

11 Jun - 20 Jun Avianca
20 Jun - 30 Jun Avianca
25 Jun - 02 Jul Avianca
18 Jun - 08 Jul Avianca
23 Jun - 02 Jul Avianca
13 Jun - 24 Jun Avianca
23 Jun - 14 Jul Avianca
01 Jun - 06 Jun jetBlue
01 Jun - 08 Jun jetBlue
22 Jun - 22 Jul Volaris
15 Jun - 20 Jun jetBlue
17 Jun - 01 Jul Volaris
19 Jun - 30 Jun jetBlue
24 Jun - 02 Jul jetBlue
29 Jun - 14 Jul Southwest Airlines
19 Jun - 08 Jul Southwest Airlines
17 Jun - 27 Jun jetBlue
03 Jun - 07 Jun Volaris
12 Jun - 22 Jun jetBlue
19 Jun - 11 Jul Southwest Airlines

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

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