Delta's Premium Revenue Milestone Hides Product Breakdown (simpleflying.com)

Delta Air Lines reported $5.695 billion in premium revenue for Q4 2025, surpassing main cabin revenue for the first time. The airline bundles Delta One, First Class, Premium Select, and Comfort+ into one figure, obscuring which product drives growth. Analysts say Comfort+ upgrades, not luxury cabins, likely fuel much of the revenue, with premium seat capacity up 4.8% versus 2.7% for economy.