- Burger King - On May 28, 2026, Royal Perks members can get a free Hamburger with any $3+ purchase at participating locations nationwide.
- Carl's Jr. and Hardee's - On May 28, 2026, Hardee’s and Carl’s Jr. are celebrating National Burger Day with a buy-one-Famous-Star-get-one-for-1-cent deal at participating restaurants through their rewards programs.
- Checkers and Rally's - On May 27 and May 28, 2026, you can take advantage of a buy-one-get-one-free Classic Burger deal at participating locations.
- Dairy Queen - Through May 31, 2026, rewards members can get $1 off any Signature Stackburger.
- Del Taco - From May 28 to May 30, 2026, Del Taco is offering a buy-one-get-one-free deal on its Double Del Cheeseburgers through its Del Yeah! Rewards program.
- Farmer Boys - On May 28, 2026, VIF rewards members can get a $3.99 Big Cheese Cheeseburger through the chain's app.
- Habit Burger & Grill - From May 28 through June 3, 2026, rewards members can redeem a buy-one-get-one-free Charburger deal.
- Jack in the Box - On May 28, 2026, rewards members can get a free Jr. Jumbo Jack with any $1+ order in the chain's app.
- Shake Shack - The chain has been offering a free burger with a $10+ purchase made through an in-store kiosk, the Shake Shack app, or Shake Shack website all month long, and on May 28, 2026, the burger for the promotion is the ShackBurger.
- Smashburger - On May 28, 2026, you can get a single-patty Smash Burger for $5.28 at participating locations nationwide in-store, online, and through the Smashburger app. To redeem the offer, you can mention the offer at checkout in-store or enter the promo code "528SINGLE" at checkout when ordering online or through the app.
- Sonic - All month long, including on May 28, 2026, Sonic has been offering a free Sonic Smasher or All-American Smasher with a $5 purchase through the Sonic app.
- Steak 'n Shake - On May 28, 2026, if you wear or show any American flag item in-store, you can get a free Double Steakburger.
- Whataburger - On May 28, 2026, Whataburger Rewards members can get a free Whataburger when they order medium fries and a medium drink. You can either order online through your account or scan the app in-store.
- White Castle - Throughout May (National Hamburger Month), you can get a $25 gift card for $19.21 using a coupon from the White Castle website. The coupon is only redeemable in person.
Last updated 5/28/2026.
Photo via Carl's Jr.
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