I just received four of them and they will expire on Dec 31. 1. I will not be flying on Delta before then. 2. If I do fly in Delta it will be in Biz/Elite FC and the certificates will be useless. 3. I never drink when flying. If you want them, just post "Send them to me" and open a conversation giving me your name and snail mail address. (Please, if someone else has already posted that, do not ask for them. I only have the four.) I am not asking for anything in return (unless you are Michelle Pfeiffer, scoow's Sexy Sister-in-Law, or Traveller's Incredibly Gorgeous Blonde Sister, in which case the price would be one heck of a lot more than you would be willing to pay).