P.F. Chang’s 20% Off Online Order Until 10/31! October 29, 2012 by Consumer Queen Leave a Comment P.F. Chang’s 20% off online orders with no minimum purchase required!Avoid the Ghouls and Goblins this Halloween and treat your friends and family with 20% off your online order! Use cpn code “GHOULS” or “GOBLINS“. Offer ends October 31.