About 18% Starlink odds, weighted to recent UA1563 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 135 recent flights; Starlink found in 4 of 26 Wi-Fi checks since Jan 2, 2026 (last N79402, Oct 11, 2026).
Aircraft seen on UA1563: Boeing 737 MAX 8, Boeing 737-900, Boeing 737-800, Airbus A320.