Jack in the Box (800 S Mountain Ave)
4.5 x (500+) • American • burger • Fast Food • $ • Info
800 south mountain avenue ste a
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4:00 AM - 3:30 AM
Featured items
What's New
- Bacon Double Sourdough Smashed Jack™ Combo$14.86Two 1/4lb smashed patties made w/ 100% seasoned beef, hickory smoked bacon, cheese, pickles, grilled onions & Boss Sauce on Sourdough, plus fries & drink.
- Bacon Double Sourdough Smashed Jack™$12.99 • 1080 Cal.Two 1/4lb smashed patties made w/ 100% seasoned beef, hickory smoked bacon, American cheese, pickles, grilled onions & new Boss Sauce on toasted Sourdough.
- Sourdough Smashed Jack™ Combo$12.111/4lb smashed patty made w/ 100% seasoned beef, melty American cheese, pickles, grilled onions & Boss Sauce on Jack's famous Sourdough, plus fries & drink.
- Sourdough Smashed Jack™$10.49 • 690 Cal.1/4lb smashed patty made with 100% seasoned beef, melty American cheese, pickles, grilled onions & Boss Sauce on Jack's famous Sourdough. Your newest fave.
- Classic Birria Tiny Tacos$5.63 • 320 Cal.Crunchy, bite-size birria Tiny Tacos with Jack's famous buttermilk ranch dipping sauce, now Birria flavored. Birria. Tiny Tacos. What's not to love?
- Sauced & Loaded Birria Tiny Tacos$6.88 • 470 Cal.Crunchy, bite-size birria Tiny Tacos with shredded cheddar, cheese sauce & shredded lettuce with Jack's new birria-flavored buttermilk ranch dipping sauce.
- Jack's Fan Favs Box w/ Tiny Tacos$12.50 • 1480 Cal.All your favorite sides at last! Tiny Tacos, seasoned curly fries, onion rings & mini churros w/ Buttermilk Ranch, Avocado Lime & new Birria Ranch sauce.
- Jack's Fan Favs Box w/ Birria Tiny Tacos$12.50 • 1320 Cal.All your favorite sides at last! Birria Tiny Tacos, seasoned curly fries, onion rings & mini churros w/ Buttermilk Ranch, Avocado Lime & new Birria Ranch.
- Classic Sauced & Loaded Wedges$5.63 • 530 Cal.Crispy Potato Wedges, loaded with melty shredded Cheddar Cheese, Cheddar Cheese sauce, ranch & bacon crumbles. You wanted ‘em, you got ‘em! Hungry yet?
- Spicy Sauced & Loaded Wedges$5.63 • 560 Cal.Crispy potato wedges, melty shredded cheddar cheese, cheddar cheese sauce, bacon crumbles, spicy good good sauce, & jalapenos. You wanted ‘em, you got ‘em!
Digital Bundles
- Jumbo Meal Deal$21.24When your bestie says she's not hungry, but you know better. Get 2 Jumbo Jack Cheeseburgers, 2 medium curly fries, Tiny Tacos & Mini Churros.
- Jack's Party Bundle$28.74Save the day & get something for everyone: 3 Jr. Jumbo Jack cheeseburgers, 3 Chicken Sandwiches, 3 medium Curly Fries, & 6 of Jack's famous tacos.
- Mega Munchies Box$25.00 • 3770 Cal.This box is packed with of Jack's fan faves like Curly Fries, 30 Chicken Nuggets, 39 Tiny Tacos, and of course your favorite dipping sauces.
Burger Combos
- Triple Bonus Jack® Combo$7.613x 100% beef seasoned as it grills, 3 slices of American cheese, shredded lettuce, pickles and secret sauce on a toasted bakery bun, plus fries & a drink.
- Double Bonus Jack® Combo$5.74Double 100% beef seasoned as it grills, melty American Cheese, shredded lettuce, pickles & Secret Sauce on a toasted bun, plus hot & salty fries & a drink.
- Bacon & Swiss Buttery Smashed Jack™ Combo$13.11Melted garlic herb butter on our new ¼ lb. smashed patty, hickory smoked bacon, Swiss cheese & bacon mayo on our signature brioche bun, plus fries & drink.
- Buttery Smashed Jack™ Combo$12.11Melted garlic herb butter on our new ¼ lb. smashed patty, natural Swiss cheese, lettuce, tomato, ketchup & mayo on a signature brioche bun + fries & drink.
- Bacon Double Smashed Jack™ Combo$14.86Two 1/4lb smashed patties, hickory smoked bacon, melty American cheese, pickles, grilled onions & all-new Boss Sauce on a brioche bun, plus fries & drink.
- Classic Smashed Jack™ Combo$12.361/4lb smashed patty, melty American cheese, pickles, grilled onions & all-new Boss Sauce on a brioche bun, plus fries & drink. Trust us, this is real good.
- Bacon Ultimate Cheeseburger™ Combo$12.492x 100% beef seasoned as it grills, hickory smoked bacon, melty American & Swiss style cheese, ketchup, mustard & mayo on a buttery bun plus fries & drink.Popular
Chicken Combos
Breakfast Combos
Late Night
Tacos
Fries & Sides
Shakes & Desserts
Drinks
Burgers
Chicken
All Day Breakfast
Lighter Options
What is the address of Jack in the Box (800 S Mountain Ave) in Ontario?
Jack in the Box (800 S Mountain Ave) is located at: 800 S Mountain Ave , Ontario
Is the menu for Jack in the Box (800 S Mountain Ave) available online?
Yes, you can access the menu for Jack in the Box (800 S Mountain Ave) online on Postmates. Follow the link to see the full menu available for delivery and pickup.
What are the most popular items on the Jack in the Box (800 S Mountain Ave) menu?
The most ordered items from Jack in the Box (800 S Mountain Ave) are: Large Chicken Nuggets (10) Combo, Large Bacon Ultimate Cheeseburger™ Combo, Large Jumbo Jack® Cheeseburger Combo.
Does Jack in the Box (800 S Mountain Ave) offer delivery in Ontario?
Yes, Jack in the Box (800 S Mountain Ave) offers delivery in Ontario via Postmates. Enter your delivery address to see if you are within the Jack in the Box (800 S Mountain Ave) delivery radius, then place your order.
Can I get free delivery from Jack in the Box (800 S Mountain Ave)?
Delivery fees for Jack in the Box (800 S Mountain Ave) vary. Just enter your delivery address to see the delivery fee for your location. You could always get free delivery from Jack in the Box (800 S Mountain Ave) with Postmates Unlimited.
Can I pick up my order from Jack in the Box (800 S Mountain Ave)?
Postmates offers pickup from many restaurants in your city. To see if you can pick up your order from Jack in the Box (800 S Mountain Ave), add items to your cart and look for the ‘pickup’ option at checkout.
Can I schedule a delivery order from Jack in the Box (800 S Mountain Ave)?
Some restaurants on Postmates allow you to schedule a delivery to show up at your location when you want it. At checkout, look for the option to select a delivery time. If it’s there, that means you can schedule your delivery from Jack in the Box (800 S Mountain Ave).
