Subway offers free cookie February 18 Feb 172013 If you're new here, you may want to subscribe to our daily email updates so you won't miss a deal. Thanks for visiting! With any purchase at participating Subway shops Presidents’ Day, receive a free treat. The offer is valid February 18, while supplies last. The free freshly baked cookie deal, one per customer, is not valid with any other discounts or offers. Sorry, the comment form is closed at this time.