06/02/2026
taco tuesday you know the drill 🌮 get 2 tacos for $.75, no purchase requirement, in-app only for one day only.
Jack in the Box
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Jack in the Box is a fast food restaurant located on S Mountain Avenue, offering a wide range of menu options from burgers to tacos to egg rolls. Their social media presence boasts specials such as the Pineapple Express Shake and the Mega Munchies Box, with occasional giveaways for lucky Jack Pack members.
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Address
800 S Mountain Avenue Ste A
Ontario, CA
91762
The fast food restaurant located on S Mountain Avenue in Ontario can be easily accessed through public transport or by driving. If you plan to take public transport, you can take the Metrolink train and get off at the Ontario station. From there, you can either walk or take a bus that goes along S Mountain Avenue.
If you plan to drive, you can take the I-10 freeway and exit at N Grove Ave. Turn right onto W Holt Blvd and continue straight until you reach S Mountain Avenue. The restaurant is on your left-hand side.
Parking is available in the lot next to the restaurant.
Opening Hours
| Monday | 4am - 2:30am |
| Tuesday | 4am - 2:30am |
| Wednesday | 4am - 2:30am |
| Thursday | 4am - 2:30am |
| Friday | 4am - 2:30am |
| Saturday | 4am - 2:30am |
| Sunday | 4am - 2:30am |
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What people say
Fast food restaurants have always been a go-to for those who crave quick and delicious meals. Jack in the Box, located on S Mountain Avenue, Ontario, is one such restaurant that has been satisfying cravings for years. With a menu that offers everything from burgers to tacos to egg rolls, Jack in the Box has something for everyone.
Customers have taken to social media to express their love for this fast food joint. One customer couldn't decide what to get and ended up getting it all! Another customer shared a picture of their jar filled with money saved up just to buy more Jack in the Box. The restaurant even celebrated a customer's birthday by offering 2 free tacos with a $1 purchase through their app or online.
Jack in the Box is always innovating and introducing new items on their menu. Recently, they announced the arrival of jack wraps at select locations and even offered a Pineapple Express family meal deal that included a shake, Red Bull infusion, and chicken sandwich.
Overall, Jack in the Box is a great choice for anyone looking for fast food that satisfies their cravings. With its diverse menu options and constant innovation, it's no wonder customers keep coming back for more.