About 37% Starlink odds, weighted to recent UA2189 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 80 recent flights; Starlink found in 7 of 13 Wi-Fi checks since Jan 2, 2026 (last N76516, Oct 5, 2026).
Aircraft seen on UA2189: Boeing 737-800, Boeing 737 MAX 9, Boeing 737 MAX 8.