06/26/2026
just in the nick of time ⏰
Jack in the Box
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Jack in the Box is a popular fast food and burger restaurant located on Sierra Avenue. Known for its diverse menu with items ranging from burgers to tacos to egg rolls, it appeals to those looking for something outside the box. While they occasionally offer limited-time promotions, such as their Pineapple Express Shake or Mega Munchies Box, customers can always rely on finding something delicious to satisfy their cravings here.
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Address
10110 Sierra Avenue
Fontana, CA
92335
To get to Sierra Avenue in Fontana by public transport, take the Metrolink train and get off at the Fontana station. From there, take the route 82 bus towards Kaiser Hospital and get off at Sierra Avenue. Walk a few blocks down Sierra Avenue and you will reach your destination.
If you prefer to drive, take the I-10 freeway and exit at Sierra Avenue. Turn left onto Sierra Avenue and continue driving for approximately one mile. You will see the fast food restaurant and burger restaurant on your right-hand side.
There is ample parking available near the restaurants if you choose to drive.
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What people say
Fast food restaurants are a go-to for those who crave quick and delicious meals. And when it comes to fast food, Jack in the Box on Sierra Avenue in Fontana is definitely a crowd favorite. This burger restaurant offers a wide variety of menu items that cater to all kinds of cravings, from burgers to tacos to egg rolls.
What's great about Jack in the Box is that they always have something new and exciting to offer. Their social media posts showcase their latest menu items, like the Pineapple Express family which includes a Shake, Red Bull Infusion, and a Chicken Sandwich. And let's not forget about their famous 2 for .99 tacos deal which is available when you order on the Jack app or online.
But what sets Jack in the Box apart from other fast food restaurants is their willingness to think outside the box. They recently announced that jack wraps are coming soon to a location near you! And if you're looking for something sweet, why not try having dessert for breakfast with their tempting options?
Overall, Jack in the Box on Sierra Avenue in Fontana is definitely worth checking out if you're looking for tasty and innovative fast food options.