Old Navy Coupon: Save 30% off This post may contain affiliate links. Please see the full disclosure policy here. Posted on March 3, 2012 Written by Mary Leave a Comment There is a new Old Navy Coupon – head over to the Old Navy Facebook page and grab an Old Navy printable coupon for 30% off your entire purchase. Valid Saturday and Sunday (3/3 – 3/4) only. You can print it OR you can show your phone!!