$4 Classic Shakes

Happy National Milkshake Day!$4 Classic ShakesOur signature hand-spun-to-prefection Sakes are yours for only $4 this weekend with the purchase of any burger or sandwich*USE CODE: SHAKEITSip up sweet satisfaction from our classic Shake menu with fan-faves like: Chocolate, Vanilla, Strawberry, OREO Cookies and Cream, Coffee, Black & White and Vanilla & Chocolate. *Offer valid through 9/13 when you order in the Shack App, online, or at kiosk in-Shack.Offer only valid for qualifying orders of one (1) Shake and one (1) Sandwich or Burger placed at a kiosk in-Shack, or for delivery or pick-up via the Shake Shack Mobile App or shakeshack.com, and fulfilled September 10th – September 13th 2026 (“Promotional Period”) at participating US Shake Shack locations (excluding airports, stadiums, arenas, travel plazas, and museums). Offer not valid for drive-thru orders or orders made through third-party delivery apps. Limit one (1) Shake per order. Max savings equal to $4.99. Must add at least (1) Shake and one (1) Sandwich or Burger to cart prior to checkout. Any applicable taxes, delivery fees, service fees, or other fees are excluded from the discount and are paid by the guest. Offer excludes limited-time offer Shakes (Dubai Shake, Reese’s Shake, Biscoff Cookie Butter Tiramisu Shake, Chocolate Toasted Marshmallow S’mores Shake, Tropical Mango Shake with Passion Fruit Popping Boba, and all paid add-ons such as boba. Offer will apply to the least expensive applicable Shake. While supplies last. Cannot be combined with any other offers or promotions. Must use promotional code 'SHAKEIT’ at checkout. Code is case sensitive. Offer code will only work in all caps.