There are only two that fly non-stop out of BWI now, Southwest and Airtran. I know how you feel, I couldn't believe there were no non-stops either. These weren't an option for us since we are going over Thanksgiving and I wanted to get our tickets without waiting for SW or AT to release their schedules (this was back in February). We found a good price on USAir ($800 for the 4 of us) with great flight times on Expedia. We also knew we didn't want to have to change planes in Atlanta with Delta since it is such a large airport, so we opted for Charlotte and USAir. I'm not sure where you are located, but I think Philly might have non-stops on some major carriers.