About 44% Starlink odds, weighted to recent UA653 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 58 recent flights; Starlink found in 2 of 8 Wi-Fi checks since Jan 29, 2026 (last N78540, Oct 5, 2026).
Aircraft seen on UA653: Boeing 737-800, Boeing 737 MAX 8.