In airline years, Southwest is certainly old enough to be put out to pasture. Instead, the massive airline is making money like never before. Could some of its contrarian moves, like no bag fees, actually be working? Or is it something else? Oil prices are driving low fares around the world, and that is driving traffic figures despite even some sluggish economies. One airline seeing remarkable traffic numbers is Volaris in Mexico. Meanwhile, Russia’s Aeroflot saw a surprise turn of events as the plug was pulled on its absorption of troubled Transaero.