Airline stocks fell in premarket trades Friday after Delta Airlines Inc. lowered its 2024 earnings guidance.The air carrier reported a top- and bottom-line beat with its fourth-quarter results before market open, although its shares fell 5.6% after the company cut its earnings outlook.Delta said it expects March quarter unit revenues to be flat to down 3 percent over 2023, according Delta President Glen Hauenstein. “The March quarter includes a headwind from higher international mix, the normalization of tr ...