About 51% Starlink odds, weighted to recent UA519 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 83 recent flights; Starlink found in 6 of 25 Wi-Fi checks since Apr 18, 2026 (last N62883, Oct 6, 2026).
Aircraft seen on UA519: Boeing 737-900ER, Airbus A320, Boeing 737-800, Boeing 737 MAX 9.