Today only (10/22), head over to OldNavy.com and you can get FREE 2-Day Shipping on your entire order with no minimum when you click the Free Shipping Apply Code button (this option should pop up as you are navigating the site).
Even better, you can also use the promo code THIRTY at checkout to get an additional 30% off your entire purchase excluding Old Navy Everyday Steals, Today Only Deals and Hot Deals (expires 10/22).
And yes, these 2 offers can be combined!