Over 99% Starlink odds, weighted to recent UA3531 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 68 recent flights; Starlink found in 6 of 7 Wi-Fi checks since Jan 9, 2026 (last N742YX, Jun 29, 2026).
Aircraft seen on UA3531: Embraer E-175.