About 25% Starlink odds, weighted to recent UA1729 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 125 recent flights; Starlink found in 10 of 23 Wi-Fi checks since Jan 2, 2026 (last N69810, Sep 6, 2026).
Aircraft seen on UA1729: Boeing 737-900ER, Airbus A321neo, Boeing 737 MAX 8, Airbus A321.