December 22, 2018 No Comments FREE Slice of Pizza at QuikTrip Download the QuikTrip app for Apple iOS or Android devices and register to get a coupon for a FREE Pizza by the slice coupon in the app. Coupon valid today (12/22/18) only. Locations. FREE Slice of Pizza at QuikTrip – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.