Live until December 27, 2026
Shake Shack is giving chicken fans a reason to look forward to Sundays. Through December 27, you can get a free Chicken Shack sandwich or lettuce wrap with a qualifying order.
How to claim it:
Order through the Shake Shack app, website, or an in-Shack kiosk.
Spend $10 or more on your order.
Enter promo code CHICKENSUNDAY at checkout.
Add a Chicken Shack sandwich or lettuce wrap and the discount should apply.
The offer is available every Sunday through December 27 at participating locations. Drive-thru and third-party delivery orders may not qualify.
Valid: 2026-09-20 through 2026-12-27
Region: United States
