Kicking off the second quarter earnings season, Delta Air Lines (DAL)  reported strong Q2 results before market hours on Thursday and further boosted investor sentiment after officially announcing a dividend increase.Lifting many of its peers, DAL spiked more than +12% in this morning's trading session, with United (UAL)  and American Airlines (AAL)  stock joining in on the rally and up +10% and +8%, respectively. Delta Beats Q2 Expectations  Reporting Q2 EPS of $2.10, Delta was able to exceed expectations ...