About 79% Starlink odds, weighted to recent UA1131 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 85 recent flights; Starlink found in 12 of 18 Wi-Fi checks since Jan 15, 2026 (last N14539, Oct 8, 2026).
Aircraft seen on UA1131: Airbus A321neo, Boeing 737-900ER, Boeing 737-800.