Recent social media posts
09/03/2026
$500 isn't the only thing I'm giving away 👀
For any students surviving on a budget, I've got you:
⚡ $1 Breakfast Jack® w/ order of a Red Bull® Can or Infusion
⚡ $1 Red Bull® w/ order of a Breakfast Croissant
⚡ Free regular-size fries (Curly or French) or dessert w/ order of a Red Bull Infusion
Offers valid 1x per week (Mon.-Sun.) for new and existing Jack Pack Rewards members. Available only in the Jack App. Dessert excludes shakes.
09/01/2026
the fortune doesn't lie 🥠 get 2 tacos for $.75, no purchase requirement, in-app only for one day only
09/01/2026
Donate $1 to No Kid Hungry at Jack in the Box and get a free small curly fry on your next visit.
08/31/2026
Get Free 2 Tacos w/ $1 minimum order
1x only on 8/31 only on the Jack App
08/28/2026
nothing better than tacos unless it's more tacos. 🌮
08/27/2026
Did you catch everything revealed today? If not, Jack delivers.
08/26/2026
The universe gave you a week-long head start. 🛸
Don't waste it.
Cosmic Cheeseburgers are only at my 1220 Centinela Ave, Inglewood, CA location through September 2. 🌌🍔
08/24/2026
Early class. Low battery. We got you. ⚡
Pair any Red Bull Can or Infusion with a Breakfast Jack for just $1 in the Jack App.
Valid 1x per week.
08/21/2026
friends = me, myself, and I
08/20/2026
What's more whimsical than my new Cosmic Cheeseburger? 🛸🪐🌟 Available for 2 weeks only at 📍1220 Centinela Ave, Inglewood, CA 90302
08/19/2026
body: resurrected
12/13/2018
Click here for great offers and stuff!
Burgers. Breakfast. Tacos and more. All of Jack’s favorite things in one place.
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.
