Jack In The Box
$ • Fast Food, Burgers, Tacos
Hours:
990 N Mountain Ave, Ontario
(909) 986-5878
About Jack in the Box
Customers' Favorites
Bacon & Swiss Buttery Jack
Sausage Breakfast Jack
Jr Bacon Cheeseburger
Grilled Chicken Salad
Classic Buttery Jack
Chicken Fajita Pita
Chicken Club Salad
Chicken Sandwich
Chicken Nuggets
Chicken Strips
Jack in the Box Reviews
Ratings
Menu
Add a Menu
Hours
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
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Jack in the Box in Ontario, CA is a 24/7 spot for delicious food. Despite some inconsistencies like a messy sandwich and hard hash browns, most visits have decent service. The restaurant's parking is clean and free, making it convenient for customers. However, there have been issues with their operating hours not matching what was posted, leaving some customers disappointed, like a group of kids after prom who had to wait outside in the cold due to early closure. Overall, Jack in the Box is a popular place for tasty food any time of day.