Why United Airlines Is Launching A New Premium Economy Experience In 2026

United Airlines is now launching a new premium economy experience in 2026 because the airline is increasingly seeing long-haul profitability as tied to cabin mix and not just overall seat volume. Its existing Boeing 787-9 models are already premium-leaning, with 48 Polaris business seats and 21 Premium Plus seats, but the new-generation Boeing 787-9 layout goes much further. Industry analysis on the incoming aircraft points to a 222-seat configuration with more than 60 Polaris seats, 35 Premium Plus seats, and 123 economy seats, meaning that United Airlines is adding more high-yield seating while materially shrinking the coach cabin.