To qualify, you have to accumulate sufficient mileage with the same airline or airline alliance.

Several frequent-flier programs are offering members new ways to accumulate mileage without ever buying an airline ticket.

But some say these figures do not accurately reflect the performance of the elderly, because they accumulate much less mileage than younger drivers.

Under the terms of the alliance, travelers will be able to accumulate and redeem frequent-flier mileage on all member carriers.

Collect enough stamps, accumulating mileage in the rally, and you could win a Norev model car of your choice.

They reward loyalty to an airline that serves thousands of routes because it pays to accumulate mileage in a single program.

But Mr. Gunn said there would be no deadlines for travelers who have accumulated mileage under the old program.

Buyers accumulate "mileage" with each purchase that eventually entitles them to free brownies.

The airlines call the new links a boon for consumers, who will be able to accumulate and redeem mileage on more than one carrier.

He accumulated substantial mileage at a time when miles did not expire.