Ryan Um | 

White Castle Free Slider Day 2024: What to Expect Next Year on May 15

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May is National Burger Month, a time to celebrate your favorite patty and bun combo. That could mean beef, turkey, plant-based, or whatever other ingredient the food industry is pushing next (just, please, leave cauliflower out of this). When food “holidays” like National Burger Month roll around, we expect to see free food deals. That was the case on National Slider Day, May 15, 2023. (National Hamburger Day was May 28.) Every year, White Castle sliders get their moment in the spotlight, with the chain offering a free slider to customers for White Castle free slider day.

Fortunately, this year was no different. White Castle offered a free cheese slider on May 15, no purchase necessary. Plus, there plenty of other savings for National Slider Day, that we expect will return for 2024.

For more smart shopping tips and savings hacks, text HACKS to 57299.


National Slider Day is May 15, exactly when White Castle free slider day is.

It’s real easy to keep track of National Slider Day. It falls on May 15 each and every year. In 2024, May 15 is a Wednesday. It makes sense that White Castle is the loudest and proudest on National Slider Day because they created the occasion in 2015. And they’ve celebrated the day every year since.


Show a coupon to get your free White Castle Slider on National Slider Day.

white castle burgers, fries, and drink

In order to get your free cheese White Castle slider (regularly $1.25) in 2023, you needed to print out or download this coupon and show it to the White Castle cashier when you visited a location in person. No purchase was necessary.

This coupon was limited to one slider per person, and you could not use it on delivery orders or in combination with any other deal or promotion.

Additionally, got a discount on select sliders when you ordered through Instacart. These discounts varied depending on your order.

Members of Craver Nation, White Castle’s loyal program, received 20% off mobile orders throughout May. Plus, if you were new to join, you received an offer for a free Original Slider Combo Meal just for signing up.


Pick up even more discounts on National Slider Day from Wayback Burger, Red Robin and Krystal.

A table at Red Robin with multiple plates of food, including burgers, fries, broccoli, a tower of onion rings, a milkshake, and several dipping cups.

Throughout the month of May, other places like Red Robin and Wayback Burger offered deals for their customers to help them save on National Slider Day. Plus, Krystal rolled out their own National Slider Day deal. Here were the other burger deals from May 15, 2023:

  • Krystal: BOGO free sliders when you used the code SLIDERDAY on the Krystal mobile app or online website.
  • Red Robin: If you joined the Royalty Rewards program you got a BOGO 50% off entrees coupon. This one-time coupon was valid from May 1 – May 31, 2023. It was only available at participating locations.
  • Wayback Burger: Kids meals (reg. $8.49) were only $3 when you purchased an adult entree from May 15 to May 21 — a 35.3% discount.

There are plenty of ways to be Red Robin Royalty and get free burgers by following our tips and tricks.


National Hamburger Day deals

a tray with 2 burgers, 2 fries, and 2 drinks being grabbed by two people

National Hamburger Day is two weeks after National Slider Day which means even more discounted burgers in the month of May. Here are some of the deals that you could pick up on May 28, 2023:

  • Wendy’s offered a $0.01 Junior Bacon Cheeseburger (reg. $3.39) with any purchase on May 28.
  • Habit Grill had two Charburgers, two sides, and two drink for $20 on May 28.

To be updated on all the food deals, text FOOD to 57299 and be the first to know about the hottest food deals each day.

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