About 17% Starlink odds, weighted to recent UA1850 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 76 recent flights; Starlink found in 5 of 22 Wi-Fi checks since Feb 13, 2026 (last N77539, Sep 30, 2026).
Aircraft seen on UA1850: Boeing 737-800, Boeing 737-900ER, Airbus A321neo, Airbus A319.