Blockbuster Express Coupon: Rent 2, Get 1 FREE! March 11, 2011 by Jennie The links in the post below may be affiliate links. Read the full disclosure.Print Email Blockbuster Express has released another great coupon code so help you save on those movie rentals! Use 72JFD4 through Sunday, March 13th to get a thrid rental for FREE when you rent two. Find a Blockbuster Express in your area.