About 24% Starlink odds, weighted to recent UA5815 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 43 recent flights; Starlink found in 19 of 20 Wi-Fi checks since Jan 1, 2026 (last N611UX, Aug 6, 2026).
Aircraft seen on UA5815: Bombardier CRJ-200, Embraer E-175.