About 74% Starlink odds, weighted to recent UA5903 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 23 recent flights; Starlink found in 6 of 6 Wi-Fi checks since Mar 30, 2026 (last N571GJ, Sep 23, 2026).
Aircraft seen on UA5903: Bombardier CRJ-550, Embraer E-175.