About 44% Starlink odds, weighted to recent UA534 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 96 recent flights; Starlink found in 12 of 29 Wi-Fi checks since Mar 11, 2026 (last N14507, Sep 12, 2026).
Aircraft seen on UA534: Airbus A321neo, Boeing 737-900ER, Boeing 737-800.