About 10% Starlink odds, weighted to recent UA5640 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 51 recent flights; Starlink found in 7 of 10 Wi-Fi checks since Jan 17, 2026 (last N570GJ, Aug 7, 2026).
Aircraft seen on UA5640: Bombardier CRJ-200, Bombardier CRJ-550, Mitsubishi CRJ-200LR.