About 95% Starlink odds, weighted to recent UA5221 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 73 recent flights; Starlink found in 20 of 20 Wi-Fi checks since Apr 7, 2026 (last N773SK, Oct 5, 2026).
Aircraft seen on UA5221: Bombardier CRJ-550.