Delta Air Lines (DAL.US) reported better-than-anticipated second-quarter results before the market opened on Friday, reaffirming its full-year profit guidance.

The company indicated that robust demand for premium, business, and international travel helped offset the impact of its highest quarterly fuel expenditure on record.

For the second quarter, the airline posted adjusted earnings per share of $1.56, surpassing analyst expectations of $1.51, though down from $2.12 in the same period last year.

Revenue increased by 14% year-over-year to a record $17.7 billion, also exceeding analyst forecasts, while capacity grew by only 1%.

The carrier also reiterated the guidance it initially provided in January, projecting adjusted earnings per share between $6.50 and $7.50 for 2026.

Delta had not updated its full-year outlook in April, citing significant uncertainty for the airline industry stemming from the conflict between the US and Iran.

Ed Bastian, Delta's Chief Executive, stated, "We need to continue ensuring our revenue covers our costs, and fuel is one of our largest expenses, with prices still up about 50% currently. Therefore, I don't anticipate a decline in airfares."

As the first major U.S. airline to release quarterly results, Delta is often viewed as a bellwether for the world's largest air travel market.

Delta reported adjusted fuel expenses of $4.4 billion, a 77% increase compared to the prior year.

While fuel costs had decreased following signs the Iran conflict might be winding down, renewed U.S. military strikes against Iran this week have raised concerns that the situation could escalate again, with diplomatic efforts showing limited progress.

Regardless, airfares are likely to remain elevated as U.S. carriers attempt to hedge against their higher operating costs.

Bastian added, "Fluctuations in fuel prices have not changed consumers' desire to travel. We will continue to meet that demand and ensure our pricing reflects the costs of our business model."

Data showed premium product revenue grew 17% year-over-year, loyalty-related revenue increased by 19%, and revenue from the partnership with American Express rose 16% to $2.4 billion.

The earnings report validates Delta's long-standing core strategy of shifting focus towards higher-margin premium travelers rather than merely pursuing maximum seat occupancy.

Bastian has frequently emphasized that despite economic uncertainties, affluent customers remain willing to pay for premium experiences, making Delta less reliant on discounting to attract passengers compared to some rivals.

Earlier this week, Delta introduced a new basic business class fare, offering access to premium seats but excluding complimentary seat selection, lounge access, and other ancillary benefits.

United Airlines (UAL.US) had previously launched a similar product, reflecting a broader industry trend of offering increasingly segmented fare options to appeal to a wider range of travelers.

Following the earnings release, Delta's shares rose nearly 4% in pre-market trading, lifting other U.S. airline stocks as well.

The stock has gained approximately 28% year-to-date. At the time of writing, Delta shares were down 0.6% in pre-market trading at $88.47.