Have you been accumulating American Airlines "Advantage Miles" for years, saving them for that dream trip?
As of Thursday, you might have to go to plan "B."
Rules regarding non-expiring miles earned before July 1, 1989 are changing. Those "old miles" will convert to miles that expire, and more miles will be required for a free ticket.
Fliers can keep those converted miles from expiring by earning or redeeming miles at least once every 18 months.
So what does this mean for travelers?
Rick Seaney from FareCompare.com joined us live via Skype on News 8 Midday Tuesday to answer.