Delta Air Lines stock climbs more than 75% in the past year as premium revenue drives margin gains

Shares of Delta Air Lines (DAL) have surged more than 75% over the past 12 months, outperforming the broader market. After such a strong run, investors are weighing whether the rally has further to go or whether the stock has already priced in the improvement.

Cause: A shift toward higher-margin revenue

Delta’s latest results point to a structural change in the business mix. In the first quarter of 2026, the company reported record operating revenue of $14.2 billion, nearly 10% higher than a year earlier. Non-GAAP (adjusted) earnings per share were $0.64, up 44% year over year.

Management highlighted that the quality of revenue is improving. High-margin revenue streams accounted for 62% of total revenue during the quarter. Premium revenue (including Delta One, first class, and other premium offerings) grew 14% year over year, while loyalty and related revenue increased 13%.

Delta also cited strength in loyalty monetization through co-branded credit card activity. Payments from American Express topped $2 billion for the quarter, supported by double-digit growth in co-branded credit card spending.

Development: Cash generation and balance-sheet progress

The higher-quality revenue is translating into cash. Delta generated $2.4 billion in operating cash flow in the March quarter. After capital expenditures, the company produced free cash flow of $1.2 billion.

Delta used part of that cash to reduce leverage. During the quarter, the company paid down $1.6 billion in debt and finance lease obligations, bringing adjusted net debt to $13.5 billion. Management also expects the business to generate $1 billion in profit in the June quarter.

Data and valuation snapshot

As of this writing, Delta shares were trading around $71.99, with a reported daily move of (0.40%) and $0.29.

The stock trades at a price-to-earnings ratio of about 10.5. The article notes that a multiple at this level typically implies the market expects earnings growth roughly in line with inflation over the long term.

Impact: What the improved mix could mean for earnings

The article argues that if Delta sustains its momentum in premium and loyalty segments, earnings could grow at an average annual rate of 10% to 15% over the next five years—suggesting the current valuation may be conservative relative to the company’s trajectory.

Analysis: Key risks and why the stock may still appeal

Delta remains exposed to risks common to the airline industry, including potential surges in fuel costs and macroeconomic conditions that could pressure consumer travel demand and margins.

Still, the article concludes that Delta’s reduced debt load and improved revenue mix leave the company better positioned to handle a potential economic soft patch. It characterizes Delta as a top-tier operator trading at an attractive valuation and suggests the shares could rise over the next five to seven years, depending on investors’ willingness to tolerate sector volatility.