About 42% Starlink odds, weighted to recent UA1809 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 80 recent flights; Starlink found in 4 of 28 Wi-Fi checks since Feb 13, 2026 (last N78540, Oct 2, 2026).
Aircraft seen on UA1809: Boeing 737-800, Airbus A320, Airbus A319.