Reported offer: Shake Shack is offering a series of free sandwich deals throughout October with minimum purchase requirements, plus a recurring free Chicken Shack sandwich or lettuce wrap every Sunday through December 27, 2026. This promotion suits fans looking to enjoy popular menu items like Chicken Shack, Cheeseburger, and ShackBurger at no extra sandwich cost alongside their purchase.
Offer details
From October 1 to 31, 2026, use promo code SCARYGOOD at participating Shake Shack locations across the US to get a free sandwich with a minimum $10 purchase. The free sandwich changes each period: Chicken Shack from October 1-11, Single Cheeseburger from October 12-18, and Single ShackBurger from October 19-31. Additionally, every Sunday through December 27, 2026, customers can use code CHICKENSUNDAY to receive a free Chicken Shack sandwich or Chicken Shack lettuce wrap with any order of $10 or more. Both offers are valid for in-store, online, and app orders at participating locations. Downloading the Shake Shack app also enables earning points on purchases and birthday treats.
How to use it
1. Visit a participating Shake Shack location or go online/app. 2. Make a minimum purchase of $10 on your order. 3. Enter promo code SCARYGOOD to claim the free sandwich during the specified October date ranges, or use CHICKENSUNDAY on Sundays through December 27 for the free Chicken Shack or lettuce wrap. 4. Complete your order in-store, online, or via the Shake Shack app. 5. Redeem as often as desired within the offer periods and codes' validity.
Eligibility and restrictions
The $10 minimum purchase excludes the free sandwich itself and applies to each qualifying transaction. Offers are valid only at participating Shake Shack locations in the United States. The SCARYGOOD code free sandwich varies by date: Chicken Shack (Oct 1-11), Single Cheeseburger (Oct 12-18), Single ShackBurger (Oct 19-31). The CHICKENSUNDAY code works only on Sundays through December 27, 2026 for a free Chicken Shack sandwich or lettuce wrap. These promo codes must be entered at purchase time online, in-app, or mentioned in-store. Availability of items and participation may vary by location. Confirm details at your local Shake Shack and on official ordering platforms.
These deals can change at any time. Confirm current dates, availability and eligibility with the retailer or venue before shopping or visiting.