But the number of frequent-flier miles per trip has doubled.

It tried out 15 sites and said the best was www.biztravel.com, which among other things can book flights with frequent-flier miles.

I dream of the day when I'll have the resources to figure out my frequent-flier miles.

I have more frequent-flier miles than I know what to do with.

So, despite his bank of frequent-flier miles - 200,000 and counting - he is now likely to drive more.

Family members with different last names using frequent-flier miles can cause an airline to issue one.

But then, collecting frequent-flier miles was part of his job description.

One international management consultant said frequent-flier miles should not be taken from employees.

Which might cause passengers to ask how many frequent-flier miles a bad back is worth.

Can I borrow some of your frequent-flier miles to get to the beach?