This post is from a low-reputation account and contains an unverified outbound link. Be cautious before clicking external links.
Get a $3 off discount on your order of $5 or more when you use the promo code: Sweet
You have to make your purchase through the Panda Express app and create your order through the app. The promo code expires 9/26/17.
You can check out the promotion on their official website here: https://www.pandaexpress.com/promo/2017/hscb/sweet