Summer is officially over! And Sonic Drive-In is shaking up the first day of fall for shake lovers on a budget.

The restaurant is known for its variety of cool treats — from slushes to shakes. All perfect for cooling down on a warm autumn day. And, for one day only, the popular fast-food restaurant is offering a sweet discount on its popular Classic Shakes.

Photo: Sonic Drive-In

On Sept. 22, 2025 , Sonic Drive-In is serving a small Classic Shake for just $1.99 at participating locations. Add-ins cost extra.

A small Classic Shake is regularly $4.69 , so it’s a savings of nearly 60% . Regular price may vary by location.

The sweet deal is only available for Sonic’s loyalty program . Join the program here .

Limit one shake per member.

The Classic Shake is available in the following flav

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