Cheapest one-way flights from Ontario to San Jose in April from 165€

AirHint found the following cheapest one-way flights from Ontario (ONT) to San Jose (SJO) in April 2026 (see full year).

One-Way flights

14 Apr Southwest Airlines
26 Apr Southwest Airlines
23 Apr Southwest Airlines
08 Apr Southwest Airlines
13 Apr Southwest Airlines
01 Apr Southwest Airlines
07 Apr Southwest Airlines
02 Apr Southwest Airlines
06 Apr Southwest Airlines

Also check the deals for return flights from Ontario to San Jose in April.

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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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