Core Viewpoint - Delta Air Lines Inc. shares experienced a decline due to a warning about weak demand in its main cabin economy class, despite reaffirming its earnings outlook and noting growth in other areas [1] Company Summary - Delta Air Lines Inc. indicated that demand in its main cabin economy class remains weak, which has negatively impacted its stock performance [1] - The company has reaffirmed its earnings outlook, suggesting confidence in its overall financial performance despite the challenges in the economy class segment [1] - Delta highlighted growth in other areas of its business, which may provide some offset to the weakness observed in the economy class [1]