About 23% Starlink odds, weighted to recent UA1556 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 79 recent flights; Starlink found in 1 of 9 Wi-Fi checks since Feb 14, 2026 (last N27509, Oct 11, 2026).
Aircraft seen on UA1556: Boeing 737 MAX 9, Boeing 737.