How Much Is a Sourdough Jack at Jack in the Box?
A Sourdough Jack costs $7.29 at Jack in the Box in 2026.
Served on grilled sourdough with bacon and Swiss.
Make Jack in the Box at Home
Eating Jack in the Box every week adds up. These are the sauces, mixes and kitchen tools people use to get close to the real thing for a fraction of the menu price.
How to Pay Less at Jack in the Box
- Two tacos for $1.79 is the cheapest hot food at any major chain, and they are available 24 hours a day.
- The Munchie Meal at $12.49 bundles an entree, two sides, two tacos and a drink — roughly $5 less than buying the same items separately.
- Breakfast is served all day, so a $3.29 Breakfast Jack works as a cheap dinner.
- The Jack Pack rewards app runs frequent free-item and BOGO offers that are not available at the counter.
Sourdough Jack Price — FAQ
How much is a Sourdough Jack at Jack in the Box?
A Sourdough Jack costs $7.29 at Jack in the Box in 2026. That is the national average menu price, last checked August 14, 2026. Franchise owners set their own prices, so expect a little more at airport, city-centre and highway locations.
What is cheaper than the Sourdough Jack at Jack in the Box?
In the same section of the menu: Jumbo Jack with Cheese ($5.49), Jumbo Jack ($4.99) and Jr. Jumbo Jack ($2.79).
Why does the Sourdough Jack cost more at my Jack in the Box?
Most Jack in the Box restaurants are run by franchisees who set their own prices, so the same item can differ by a dollar or more between neighbouring towns, and airport, stadium and highway locations charge the most. App and loyalty offers are usually cheaper than the menu board.