About 30% Starlink odds, weighted to recent UA277 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 119 recent flights; Starlink found in 4 of 18 Wi-Fi checks since Jan 2, 2026 (last N61886, Oct 17, 2026).
Aircraft seen on UA277: Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800, Boeing 737-900.