National Hamburger Day Fuels Nationwide Deals

National Hamburger Day rolled in on May 28, 2026, delivering a nationwide feast of deals and discounts that had burger lovers celebrating from coast to coast. The unofficial holiday, which marks the end of National Burger Month and signals the start of summer grilling season, saw a massive turnout from fast-food and fast-casual giants eager to offer everything from free patties to significant price cuts.

Shake Shack got in on the action, offering a free classic ShackBurger to customers who spent over $10, a deal available through their app, online, or in-store. Beyond the immediate gratification, the New York-based chain launched a contest running until May 31, promising two lucky winners a year's worth of free burgers, distributed as a $2,000 gift card. Not to be outdone, Burger King extended a free hamburger to its Royal Perks members with any purchase exceeding $3, redeemable via their app or website at participating locations on the day.

Other big players also brought their A-game. Jack in the Box made it easy to load up with $1 hamburgers available after 2 p.m., setting a limit of five per order for both in-store and online customers. Even Del Taco, known for its Mexican-inspired fare, joined the celebration, offering a free Double Del Cheeseburger with the purchase of another, a deal that stretched through May 30. Whataburger also rewarded its loyal members with a free hamburger when they ordered a medium fries and a medium drink, accessible online or by scanning the app in-store on May 28. The Texas-based chain also ran a sweepstakes, giving customers who ordered that day a shot at winning free Whataburger for an entire year.

Hard Rock Cafe locations across the country featured a buy-one-get-one-free (BOGO) deal on Classic Smashed Burgers between 3 and 6 p.m. Additionally, members of the Unity by Hard Rock global loyalty program received a free Classic Smashed Burger during the same timeframe. Sonic Rewards loyalty members who spent at least $3 could snag a free Sonic Smasher, an All-American Smasher, or a medium drink. Some reports indicated a slightly different offer for Sonic Rewards members, with a free burger available with a $5 purchase, a promotion that ran from May 4-31.