You now have to fly 10 A+ flight credits within 90 days or 25 with a year to become elite. A one-way flight in coach earns 1 credit, in business class it earns 1.5 credits.
Main benefit: As an elite on Airtran you and a companion get a free upgrade at the gate if it’s available. (It’s fairly reliable-I’ve never missed an upgrade ever!)
You are also able to transfer credits to any member for free and everyone on your itinerary can check 2 bags for free.
Airtran elites also get top-tier elite benefits with Frontier as well.