Southwest Airlines surpassed three million fans on Facebook last month, a milestone that the airline celebrated by running a one-day sale offering 50 percent off Wanna Get Away Fares for select dates (the sale was valid for cash bookings only, not Rapid Rewards award flights). Southwest Airlines has embraced social media and was one of the first airlines to launch a blog. The airline reached one million Facebook fans in 2010 and now has its sights set on attracting 10 million fans.