Delta Air Lines stock has experienced fluctuations, with some reports indicating a decline of 7% in 2026, while others show the stock near its 52-week high. The performance of Delta and other airline stocks, such as American Airlines and United, appears to be closely tied to oil prices, with rising crude oil leading to declines and falling fuel costs resulting in gains. Analysts' outlooks on Delta's stock vary, with some seeing potential for significant upside and others valuing the stock at $84.