Last Updated: January 24, 2026

COUPON EXPIRED

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Smashburger Coupon

Free Salted Caramel Shake with $15 purchase Use Code: FREESHAKE26

At participating locations.

COUPON EXPIRED Expired: 25-01-2026

Coupon Code: FREESHAKE26

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Smashburger Coupon - Free Salted Caramel Shake with $15 purchase Use Code: FREESHAKE26 At participating locations.
Most coupons are valid only at participating locations and not valid in AK, HI, PR or outside the USA. Share: Share on Facebook One coupon per person per visit. Not valid with other offers or coupons. Void where prohibited. Coupons not valid at airports, trains, and stadiums.

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