About 52% Starlink odds, weighted to recent UA5503 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 52 recent flights; Starlink found in 14 of 14 Wi-Fi checks since Feb 2, 2026 (last N87364, Sep 26, 2026).
Aircraft seen on UA5503: Embraer E-175.