Old Navy Flip Flops $1 Today The links in the post below may be affiliate links. Read the full disclosure Here. June 17, 2017 By: SMFMcomment Today only, June 17th cardholders can grab $1.00 flip-flops online or in-store. Just use promo code FLIP at checkout when shopping online. You must check out with, or open an Old Navy or Gap family brand credit card to qualify for this deal today.