Free coney with purchase of same at regular price. Redemption Instructions Log in to view the redemption instructions for this offer. Participating locations include: SONIC 1714 N Cockrell Hill Rd Dallas, TX 75211 Phone: 214-333-9777 Map SONIC 8602 S Lancaster Rd Dallas, TX 75241 Phone: 469-567-2222 Map SONIC 8602 S Lancaster Rd Dallas, TX 75241 Phone: 469-567-2222 Map Sharing Options Share Offer Copy Link