An airline credit card is a co-branded credit card that offers rewards and benefits related to air travel. It earns rewards in the form of miles when you use the card to make purchases, with bonus miles often offered for signing up or meeting spending thresholds. These miles can be redeemed for free flights, upgrades, and other travel-related expenses. Read More: https://cardinsider.com/blog/how-does-an-airline-credit-card-work/