About 63% Starlink odds, weighted to recent UA5559 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 56 recent flights; Starlink found in 6 of 7 Wi-Fi checks since Feb 27, 2026 (last N119SY, Oct 12, 2026).
Aircraft seen on UA5559: Embraer E-175, Bombardier CRJ-550, Mitsubishi CRJ-200LR.