About 89% Starlink odds, weighted to recent UA5751 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 44 recent flights; Starlink found in 15 of 15 Wi-Fi checks since Jan 14, 2026 (last N621UX, Aug 25, 2026).
Aircraft seen on UA5751: Embraer E-175, Bombardier CRJ-550.