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 popular fast food and burger restaurant located on E 4th Street. With a diverse menu, ranging from burgers to tacos to egg rolls, Jack in the Box caters to all cravings. While they occasionally offer seasonal promotions such as Pineapple Express shakes and special treats for certain locations, they also have permanent deals like the Mega Munchies Box and occasional sweepstakes for their loyal customers. Visit Jack in the Box for a unique fast food experience that thinks outside the box.
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Address
1551 E 4th Street
Ontario, CA
91764
For public transport: Take a bus or train to Ontario station, from there walk east on E 4th Street until you reach the restaurant.
For driving/parking: From I-10 East, take exit 51A towards Euclid Ave S. Turn left onto S Euclid Ave and then turn right onto E 4th Street. The restaurant will be on your right-hand side. There is ample parking available in the adjacent parking lot.
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What people say
Fast food restaurants are a go-to for those who want quick and delicious meals. And when it comes to fast food, Jack in the Box on E 4th Street in Ontario is definitely a top pick. This burger restaurant offers a wide variety of options that cater to all cravings, from burgers to tacos to egg rolls.
Customers rave about the menu on social media, with one user saying they couldn't decide what to get so they got it all. Another customer even uses the same jar to buy more Jack in the Box! The restaurant also offers great deals like 2 free tacos with a $1 purchase in their app/online and 2 for .99 tacos when you order on the Jack app or online.
Jack in the Box is always innovating and introducing new items like their jack wraps, which are now available at San Diego locations. They even have a Pineapple Express family that includes a Shake, Red Bull Infusion, and a Chicken Sandwich!
For those who love dessert for breakfast or breakfast for dessert, Jack in the Box has got you covered. And if you're looking for entertainment while enjoying your meal, they even stream on Twitch.
Overall, Jack in the Box on E 4th Street is definitely worth checking out if you're looking for tasty fast food options with great deals and innovative menu items.