About 24% Starlink odds, weighted to recent UA791 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 82 recent flights; Starlink found in 5 of 12 Wi-Fi checks since Feb 15, 2026 (last N37466, Aug 30, 2026).
Aircraft seen on UA791: Boeing 737-900ER, Boeing 737-800, Airbus A320, Boeing 737-900.