Cheapest return flights from Ontario to San Jose in January from 286€

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

Return flights

22 Jan - 27 Jan United
27 Jan - 04 Feb Southwest Airlines
10 Jan - 14 Jan United
21 Jan - 28 Jan Southwest Airlines
13 Jan - 21 Jan Southwest Airlines
13 Jan - 20 Jan Southwest Airlines
12 Jan - 22 Jan Southwest Airlines
17 Jan - 26 Jan Southwest Airlines
15 Jan - 20 Jan Southwest Airlines
31 Jan - 09 Feb Southwest Airlines
12 Jan - 19 Jan Southwest Airlines
11 Jan - 18 Jan Southwest Airlines

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

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.