Earn point on your loyalty program!arrow arc left

Cheap flights from Ontario (ONT) to San Jose (SJC)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)

How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Ontario to San Jose in March , April 2025

17 Mar - 09 Apr $ 738.00
ONT
Ontario
Hawaiian Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Hawaiian Airlines
1 STOPS
ONT
Ontario
Pick dates
11 Mar - 07 Apr $ 1,047.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
13 Mar - 07 Apr $ 1,240.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to San Jose

17 Mar - 31 Mar $ 720.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
17 Mar - 31 Mar $ 770.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
16 Mar - 31 Mar $ 1,133.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates

One-way flights to San Jose from Ontario

6:00 AM - 9:51 AM
Alaska Airlines
1 Stops
6h 5m
ONT - SJC
$ 434
Kiwi
Pick dates
5:44 PM - 8:59 PM
Alaska Airlines
1 Stops
5h 1m
ONT - SJC
$ 500
Kiwi
Pick dates
5:44 PM - 8:59 PM
Alaska Airlines
1 Stops
5h 1m
ONT - SJC
$ 647
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.