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    Too far to deliver

    Location and hours

    990 N Mountain Ave, Ontario, CA 91762
    Every Day
    4:00 AM - 3:59 AM

    Jack in the Box (990 N Mountain Ave)

    4.5 x (1,000+) • 368.5 miChevron right small

    x Delivery unavailable

    990 N Mountain Ave

    Enter your address above to see fees, and delivery + pickup estimates.
    $ • American • burger • Fast Food

    • Featured items

        • Quick view
          Large Curly Fry

          $4.99 • Thumb up outline 86% (127)

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          Large Chicken Nuggets (8) Combo

          $10.85

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          Sausage Croissant

          $5.36 • Thumb up outline 100% (8)

        • Quick view
          Spicy Popcorn Chicken Big Box Combo

          $12.49

        • Quick view
          Chicken Nuggets (8)

          $4.74

        • Quick view
          Meat Lovers Burrito

          $6.99 • Thumb up outline 100% (13)

        • Quick view
          Bacon Ultimate Cheeseburger™

          $9.36 • Thumb up outline 85% (20)

        • Quick view
          Classic Tiny Tacos

          $5.00 • Thumb up outline 92% (41)

        • Quick view
          Large Strawberry Shake

          $6.61 • Thumb up outline 76% (17)

        • Quick view
          Large Sourdough Jack® Combo

          $14.23

        • Quick view
          Large Jumbo Jack® Combo

          $11.48 • Thumb up outline 88% (18)

        • Quick view
          Large Jumbo Jack® Cheeseburger Combo

          $11.98 • Thumb up outline 83% (37)

        • Quick view
          Large Spicy Popcorn Chicken Combo

          $10.23 • Thumb up outline 80% (5)

        • Quick view
          Cheesecake

          $3.99 • Thumb up outline 80% (31)

    Frequently asked questions

    What is the address of Jack in the Box (990 N Mountain Ave) in Ontario?

    Jack in the Box (990 N Mountain Ave) is located at: 990 N Mountain Ave , Ontario

    Is the menu for Jack in the Box (990 N Mountain Ave) available online?

    Yes, you can access the menu for Jack in the Box (990 N 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 (990 N Mountain Ave) menu?

    The most ordered items from Jack in the Box (990 N Mountain Ave) are: Two Tacos, Large Bacon Ultimate Cheeseburger™ Combo, Large Homestyle Ranch Chicken Club Combo.

    Does Jack in the Box (990 N Mountain Ave) offer delivery in Ontario?

    Yes, Jack in the Box (990 N Mountain Ave) offers delivery in Ontario via Postmates. Enter your delivery address to see if you are within the Jack in the Box (990 N Mountain Ave) delivery radius, then place your order.

    Can I get free delivery from Jack in the Box (990 N Mountain Ave)?

    Delivery fees for Jack in the Box (990 N 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 (990 N Mountain Ave) with Postmates Unlimited.

    Can I pick up my order from Jack in the Box (990 N 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 (990 N 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 (990 N 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 (990 N Mountain Ave).