Old Navy 30% off Online or In Stores 04/30/2010 By Charlene 3 Comments This post may contain affiliate links, please see my disclosure policy. Just a reminder that Old Navy is having a sale this weekend in store with everything 30% off. You can also use promo code: ONBIG30 to save 30% online! Get more information right HERE. You can head over to Oldnavy.com to shop online.