In the latest trading session, Delta Air Lines (DAL) closed at $47.80, marking a +1.36% move from the previous day. The stock outpaced the S&P 500's daily gain of 0.25%. Elsewhere, the Dow saw an upswing of 0.2%, while the tech-heavy Nasdaq appreciated by 0.56%.Coming into today, shares of the airline had gained 15.08% in the past month. In that same time, the Transportation sector gained 2.16%, while the S&P 500 gained 1.65%.The upcoming earnings release of Delta Air Lines will be of great interest to inve ...