Whether you’re dreaming of a white Christmas or want to fly south for the winter, you’ve got just three days to snag a low fare. AirTran is cooling off prices across the nation so you can fly one-way for as low as $45+. Don’t wait! This sale ends Thursday and the best destinations sell out first. * Tickets must be issued by November 20, 2008. * Travel is valid through February 11, 2009. * A 14-day advance purchase is required. * Lowest sale fares are valid for travel on Tue...