About 77% Starlink odds, weighted to recent UA1231 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 82 recent flights; Starlink found in 14 of 18 Wi-Fi checks since Feb 26, 2026 (last N24542, Oct 14, 2026).
Aircraft seen on UA1231: Airbus A321neo, Boeing 737-900ER, Boeing 777-200, Airbus A321.