About 38% Starlink odds, weighted to recent UA2018 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 76 recent flights; Starlink found in 2 of 10 Wi-Fi checks since Jan 16, 2026 (last N39475, Oct 1, 2026).
Aircraft seen on UA2018: Boeing 737-900ER, Airbus A321neo, Boeing 757-200, Boeing 737.