About 50% Starlink odds, weighted to recent UA1899 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 130 recent flights; Starlink found in 5 of 15 Wi-Fi checks since Jan 2, 2026 (last N26210, Oct 12, 2026).
Aircraft seen on UA1899: Boeing 737-800, Airbus A320, Airbus A319.