About 56% Starlink odds, weighted to recent UA529 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 142 recent flights; Starlink found in 5 of 9 Wi-Fi checks since Feb 13, 2026 (last N76504, Oct 15, 2026).
Aircraft seen on UA529: Boeing 737-800, Boeing 737-900ER, Boeing 737-700, Boeing 737-900.