Cheapest return flights from Ontario to San Jose in June from $494

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

Return flights

01 Jun - 04 Jun jetBlue
01 Jun - 12 Jun United
22 Jun - 30 Jun Southwest Airlines
29 Jun - 07 Jul Southwest Airlines
08 Jun - 15 Jun Southwest Airlines
09 Jun - 23 Jun Avianca
09 Jun - 16 Jun Avianca
03 Jun - 14 Jun Southwest Airlines
24 Jun - 01 Jul GOL Linhas AΓ©reas

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

Powered by

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Feel free to contact us with any feedback or request another flight research.