Subway is offering a $3.50 Sub of the Day Deal! They are featuring a different 6-inch sub each day of the week for just $3.50 each at participating locations for a limited time only. Monday - Sweet Onion Chicken Teriyaki, Tuesday - Oven Roasted Chicken, Wednesday - Turkey Breast, Thursday - Italian B.M.T., Friday - Tuna, Saturday - Black Forest Ham and Sunday is Meatball Marinara.