While many card companies offer point rewards, Discover currently has only one card that does not offer a percentage cash back. This is the Discover It Travel card, which provides Air Miles rather than a percentage of cash back. This works in the same way as cash back offers. Instead of receiving a percentage of your purchases, you will receive 1.5 miles for every dollar spent. There are no restrictions on the number of miles you can accumulate. You can earn miles and then redeem them for statement credit or cash toward a travel purchase. With no blackout dates, your miles can help you with the cost of your trips and travel. This allows you to cover expenses such as airfare, hotels, and even gas station purchases.