About 57% Starlink odds, weighted to recent UA651 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 127 recent flights; Starlink found in 4 of 27 Wi-Fi checks since Jan 15, 2026 (last N75433, Oct 15, 2026).
Aircraft seen on UA651: Boeing 737-900ER, Boeing 737 MAX 9, Airbus A321neo, Boeing 737-900.