About 58% Starlink odds, weighted to recent UA1596 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 178 recent flights; Starlink found in 18 of 33 Wi-Fi checks since Mar 3, 2026 (last N24519, Oct 13, 2026).
Aircraft seen on UA1596: Airbus A321neo, Boeing 737-800, Boeing 737-900ER, Airbus A321.