Free Chili Cheese Coney or any Sonic Cheeseburger with purchase of same. Redemption Instructions Log in to view the redemption instructions for this offer. Participating locations include: SONIC 2626 N Fourth St Flagstaff, AZ 86004 Phone: 928-526-2363 Map SONIC 1327 E Butler Ave Flagstaff, AZ 86001 Phone: 928-773-1120 Map SONIC US-160 Peshlaki Ave Tuba City, AZ 86045 Phone: 928-283-6110 Map Sharing Options Share Offer Copy Link
