Delta Air Lines NYSE:DAL, an Atlanta-based U.S. airline, reaffirmed its adjusted 2026 earnings forecast of $6.50 to $7.50 a share as strong premium, corporate, and international travel demand helped offset the highest quarterly fuel expense in the company's history. The airline reported adjusted second-quarter earnings of $1.56 a share, exceeding analysts' estimate of $1.51, while revenue increased 14% from a year earlier even as capacity rose just 1%. Delta's stock climbed 3.6% in pre-market trading and lifted shares of other U.S. airlines, extending its gain for the year to about 28%. The renewed outlook, which Delta initially issued in January but did not include in its April results, may give investors more confidence in the carrier's ability to manage persistent uncertainty across the world's largest aviation market.

Delta's adjusted fuel expense reached $4.4 billion during the quarter, representing a 77% increase from the same period a year earlier as conflict in the Middle East pushed jet fuel prices higher. Chief Executive Officer Ed Bastian said fuel costs remained 50% higher and indicated that he did not expect airfares to decline because ticket prices would need to reflect the airline's operating costs. Fuel prices eased somewhat after the war in Iran appeared to move closer to an end, but fresh U.S. military attacks on Iran this week raised concerns that broader hostilities could return following limited progress toward a diplomatic outcome. As the first major U.S. airline to release quarterly results, Delta's performance may offer investors an early indication of how the industry is handling higher fuel expenses, reduced schedules, and elevated fares during the peak summer travel season.

Premium revenue increased 17% from a year earlier, loyalty and related revenue rose 19%, and payments from American Express NYSE:AXP, a financial-services company, climbed 16% to $2.4 billion. These results may support Delta's long-running strategy of focusing on higher-margin travelers rather than relying primarily on increasing seat volumes, with Bastian maintaining that affluent customers remain willing to pay for premium travel despite broader economic uncertainty. Delta also introduced lower-priced Basic fares for Delta First, Delta Premium Select, and Delta One, giving passengers access to premium seats while removing benefits including lounge access, flexible ticket changes, and advance seat assignments. The approach follows similar fare products from United Airlines Holdings, a major U.S. airline, and suggests carriers are creating more narrowly defined premium options to attract a broader group of travelers while maintaining premium pricing.