For one week only from now through to January 2, 2022, you’ll be able to claim one ShackBurger for free when you buy another at full price using the Shake Shack app or website.
To access this limited time only BOGO deal, sign into your Shake Shack account, add two ShackBurgers to your cart and enter the promo code THANKYOU21. This promo code can be redeemed with delivery and pickup orders.
Each Shake Shack customer with an online account will be able to use this promotion once through to January 2 for a max savings of $6.39.
