About 66% Starlink odds, weighted to recent UA513 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 148 recent flights; Starlink found in 12 of 17 Wi-Fi checks since Jan 30, 2026 (last N18243, Oct 18, 2026).
Aircraft seen on UA513: Boeing 737-800, Boeing 737-900ER, Boeing 737 MAX 8, Boeing 737-900.