US airline stocks have experienced fluctuations as investors monitor the implications of the Strait of Hormuz closure on jet fuel prices. Delta Air Lines' stock has decreased from a peak of $83.35 to $79.42, while United Airlines has dropped from $117 to $105. Southwest Airlines' stock fell by 25% to $41.5. The International Air Transport Association (IATA) has warned of a sharp decline in airline profits, predicting a combined net profit of $23 billion for global airlines this year, significantly down from the previous estimate of $41 billion and last year's $45 billion profit. Despite the challenges posed by high fuel costs, global travel demand remains stable, with a projected 2.1% growth in passenger traffic. However, many US airlines have abandoned hedging strategies against fuel price volatility, which has affected their operational decisions. For instance, Delta reported a decrease in operating income, while United Airlines has adjusted its capacity forecasts due to elevated fuel prices. Southwest Airlines also noted a rise in fuel costs impacting its net income.