Over 99% Starlink odds, weighted to recent UA4543 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 100 recent flights; Starlink found in 23 of 23 Wi-Fi checks since Jan 13, 2026 (last N551GJ, Oct 29, 2026).
Aircraft seen on UA4543: Bombardier CRJ-550.