About 60% Starlink odds, weighted to recent UA2159 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 84 recent flights; Starlink found in 4 of 11 Wi-Fi checks since Jan 2, 2026 (last N75435, Oct 6, 2026).
Aircraft seen on UA2159: Boeing 737-900ER, Boeing 737-800, Airbus A320, Airbus A320-232.