Airtran’s A-Plus Rewards program has an elite level, which normally takes “20 or more base credits flying AirTran Airways within any 90-day period” or “50 or more base credits flying AirTran Airways within any 365-day period” to qualify.
The website doesn’t seem to say how long the status will last. I’ve heard references, though, to the status lasting for life. In other words, once elite always elite. If true, this is a really valuable perk.
And in December, Airtran is offering up their elite status to anyone with elite status on another airline. I’m going to fill out their matching form and send it in. Seems like a pretty good deal to me!