Airtran airways - DC to MCO?

Hello, I�m from out of US and I�m buying a air ticket from Washington DC to Orlando-FL. I found a good web special airfare on the Airtran Airways and I want to know if this company is a good and trust air company as I don�t know it. Can you tell me if it�s ok to buy the airtrip to this destination on the Airtran? Thanks. PS: It doesn�t matter if the company is sofisticate because the trip is very short so I only want a safe air company (to buy and to travel).