The benefits of non-airline credit cards

You may have seen TV commercials featuring American Express or Capital One credit cards that promise points or miles with the clout to get you any seat on any airline without blackout dates. Those financial services companies try to distinguish their own loyalty schemes from airline programs, which restrict access to award seats.

Non-airline programs are not affected by award seat limits, because they don’t need award availability to book you on a flight. Instead, they sell you a regular revenue ticket, charge the ticket price on your credit card, then credit the cash amount back to your card and take miles or points out of your account, whose number is based on a standard formula…