About 87% Starlink odds, weighted to recent UA1520 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 86 recent flights; Starlink found in 12 of 18 Wi-Fi checks since Feb 10, 2026 (last N24514, Oct 14, 2026).
Aircraft seen on UA1520: Airbus A321neo, Boeing 737-900ER, Boeing 737 MAX 8, Airbus A321.