National Burger Month is back, and we’re celebrating every day this May with delicious burger month deals you won’t want to miss. 

Each week, we are offering a different Shake Shack single burger for free with a $10 minimum purchase. Every Shake Shack burger is crafted with 100% Angus beef and made-to-order with the highest quality ingredients, so you don't have to sacrifice quality for a good deal.

Plan your visit to grab your favorite or snag all four deals throughout the month! Order on the Shack App, online or at a kiosk in-Shack – just use code FREEBURGER*.

Shake Shack Burger Month Offers

• 5/1 – 5/10: ShackBurger
• 5/11 – 5/17: SmokeShack
• 5/18 – 5/24: Bacon Cheeseburger
• 5/25 – 5/31: ShackBurger

Shake Shack Celebrates National Burger Day with free ShackBurgers

In honor of National Burger Day on May 28th, Shake Shack is offering free single ShackBurgers to all guests, with a $10 purchase! Just use promo code FREEBURGER to redeem! Celebrate the best day of the year (in our opinion) with our favorite burger!

Shake Shack Burger Month Sweepstakes

But that’s not all. We’re not just giving away free burgers this month; a couple of lucky guests will win free burgers for a whole year. Enter here, before June 1 for your shot. Terms apply.**

*TERMS & CONDITIONS:

Offer only valid for qualifying orders placed at a kiosk in-Shack, or for delivery or pick-up via the Shake Shack Mobile App or elderberrylane.cfd, and fulfilled May 1st – May 31st 2026  (“Promotional Period”), containing the specified promotional single burger of that day (“Promotional Burger”) (see Blog Post for the official list of Promotional Burgers and the dates they will be offered) 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) free Promotional Burger per order. Max savings equal to the price of the Promotional Burger (from $8.29 - $10.49). Offer only valid for single burgers. Order total must include a minimum of $10 worth of food or beverage products (including burgers, sandwiches, fries, chicken bites, hotdogs, drinks, shakes, frozen custard, poochinis, bag o’ bones), excluding the cost of the applicable Promotional Burger, gift card purchases and, any applicable taxes, delivery fees or other fees. Must add at least (1) applicable Promotional Burger to cart prior to checkout. While supplies last. Offer excludes all paid add-ons such as avocado and bacon. Cannot be combined with any other offers or promotions. Must use promotional code ‘FREEBURGER' at checkout. Code is case sensitive. Offer code will only work in all caps.

**NO PURCHASE NECESSARY. This Sweepstakes is open only to natural persons who are legal residents of the 50 United States, including the District of Columbia, and excluding Rhode Island, who are 18 years of age or older. Sweepstakes ends 05/31/2026. For entry and Official Rules visit https://swpp.me/e/burgeryear Void where prohibited.