SONIC is giving burger lovers a reason to cheer this football season with a deal that’s as big as game day itself. Guests can buy one Double SONIC Smasher and get a second one free each week in September when ordering through the SONIC App
* Reward is valid one time per week through September 28, 2025 for one free Double SONIC Smasher™ with purchase of a Double SONIC Smasher™ online or in the SONIC® App as a registered user. Add-ons cost extra. Not valid with delivery or any other offers. Mobile ordering available only at select locations; hours may vary.
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