About 61% Starlink odds, weighted to recent UA5191 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 49 recent flights; Starlink found in 16 of 19 Wi-Fi checks since May 17, 2026 (last N205SY, Oct 16, 2026).
Aircraft seen on UA5191: Embraer E-175, Bombardier CRJ-550, Bombardier CRJ-200.