First thing that you should do right away is to link your frequent-flyer account with your airline card. Without doing this, many airlines won’t even recognize you as if you qualify for free checked bags or not. Moreover, with many airlines like JetBlue and United Airlines, you will need to pay for your airline ticket with your airline card only in order to qualify for free checked bag benefit. While traveling abroad you can use airline cards as there is no foreign transaction fees on many airline cards. This is because you get reward points for every single airline purchase that you make with your airline cards, it often ranges from 2 to more miles per dollar spent. So, you should consider using your airline card for purchasing airline tickets, in-flight purchases and other expenditures related to airlines. Basically, enhance your card by using and learning about the features that your airline frequent flyer card is linked to. Other cards that you can consi...