About 86% Starlink odds, weighted to recent UA5543 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 91 recent flights; Starlink found in 29 of 30 Wi-Fi checks since Jan 12, 2026 (last N618UX, Oct 9, 2026).
Aircraft seen on UA5543: Embraer E-175.