Frequent flyer programs, coupled with rewards credit cards, are very profitable for airlines. For example, Delta’s latest annual report shows last year that the company earned $5.7 billion from ...

Frequent flyer programs are also an important way for airlines to encourage travel and build customer loyalty in what has long been a highly competitive marketplace. But it’s also coming under ...

Frequent flyer programs are for everyone, even if you don’t travel often. You can earn miles and spend your way toward status by using an airline’s co-branded credit card.