Cheapest one-way flights from Ontario to San Jose in April from $152

Best time to book flights for Ontario (ONT) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest one-way flights from Ontario (ONT) to San Jose (SJO) in April 2025 (see full year).

One-Way flights

27 Apr Frontier Airlines
11 Apr Frontier Airlines
22 Apr Frontier Airlines
13 Apr Frontier Airlines
14 Apr Frontier Airlines
20 Apr Frontier Airlines
29 Apr Avianca
12 Apr Frontier Airlines
26 Apr Avianca
21 Apr Frontier Airlines

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

Skyscanner

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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