Frequent flyer miles are meant to serve as a reward for loyalty toward a specific airline but have evolved into a quasi-currency unilaterally regulated by the whims of airline executives. The U.S.

New York (CNN) — Buying this week’s groceries or paying for a full tank of gas with a credit card might contribute more to the profits of the airline industry than buying a one-way ticket. That’s ...

If it seems like choosing an airline loyalty program is a lot more head-scratching these days, you're not just imagining things. Now, it's not simply your travel miles that unlock savings, but your ...