About 32% Starlink odds, weighted to recent UA1791 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 147 recent flights; Starlink found in 5 of 23 Wi-Fi checks since Jan 15, 2026 (last N37255, Oct 16, 2026).
Aircraft seen on UA1791: Boeing 737-800, Boeing 787-9, Boeing 737-900ER, Boeing 777-200.