Over 99% Starlink odds, weighted to recent UA3578 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 74 recent flights; Starlink found in 20 of 21 Wi-Fi checks since Jan 5, 2026 (last N787YX, Sep 27, 2026).
Aircraft seen on UA3578: Embraer E-175.