National Hamburger Day always falls on May 28th. Which this year, falls on a Wedsday. And there are always National Hamburger Day Deals on this day!
Why do we have a day to celebrate hamburgers? Well, Americans eat nearly 50 billion burgers a year, which is roughly three a week per person. Because we all love burgers so much, restaurants across the country are offering up freebies and deals on National Hamburger Day.
National Hamburger Day May 28, 2025 Deals
Burger King
FREE Hamburger with a purchase of $1.00 or more on May 28th.
Dairy Queen
From May 26th through June 1st, DQ Rewards Members can buy any Signature Stackburger and get a second one for just 99¢. This offer is available only in the DQ Mobile App.
Krystals
Get Krystal sliders for just $1.00 with promo code KRYSTALDAY (both online and in the Krystal app).
Shake Shack
Get a FREE Shackburger when you spend $10 and use promo code BURGERMONTH at checkout (in the app, online, or at a kiosk in-store) through June 1st!
Smashburger
On May 28, in celebration of National Hamburger Day, use code JUST528 at checkout to get a Smashburger for just $5.28.
Wayback Burgers
On National Hamburger Day, all customers at Wayback Burgers can take advantage of a B FREE Classic Burgers offer. Offer is valid for dine-in, online, and in-app orders.
Wayback Burgers
Get $5 Classic Burgers when you order in-restaurant or through the Wayback Rewards program on May 28th.
Also, when Wayback Rewards members place three orders of $15 or more during the month of May, they can also earn 120 bonus points to redeem for free food!
Whataburger
Whataburger Rewards members who order Whatameal menu items #1-8 will be entered to win free Whataburger for a Year. Whataburger will choose 75 Whataburger Rewards Members to receive five digital offers for free Whataburger menu items every month for a year (a $480 value)!
White Castle
Now through May 30th, you can purchase a $25 White Castle gift card for just $19.21! This offer is valid in-store only.
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