United Airlines CEO Scott Kirby joins CNBC to explain why the traditional fall travel "shoulder season" has disappeared. He notes that demand remains strong across both business and leisure sectors, with October now ranking as one of the airline's best months. Kirby also predicts that jet fuel prices will stay elevated through 2027, meaning airfares will likely remain high. Despite these costs, he expects United to maintain double-digit margins next year, signaling continued profitability for the company.