Will the third try be the charm? Spirit Airlines is discussing a possible merger with rival ultra-low-cost carrier Frontier, Bloomberg first reported on Tuesday. The discussions would mark the third time in as many years that the two airlines have discussed merging. The first fell through after Spirit accepted a separate proposal from JetBlue, one…

United Airlines on Tuesday updated its mobile app with several new features that it hopes will make holiday travel easier for flyers. Passengers who are sick of crowding at the gate and lining up early are sure to welcome the new “virtual gate” feature. This feature will display real-time updates about which groups are boarding,…