Welcome to a weekly feature on the Renés Points blog. Each week this series covers in a “rookie” way either a Delta or travel related theme and attempts to break down to a basic level each topic. You can read up on all the previous posts HERE. Now on to this week’s feature. René has written before on the benefits of utilizing a US Bank FlexPerks credit card to earn really cheap flight tickets.  This is one of my most used strategies each year. But there is a little known benefit to the US Bank FlexPerks card (that even René was not aware of 🙂 ). I am writing this article after a conversation we had talking about travel, miles & points this weekend at the Chicago Seminars. US Bank does not always do a great job of informing customers about some great promotions; I typically find those through alert…