About 39% Starlink odds, weighted to recent UA1597 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 139 recent flights; Starlink found in 7 of 18 Wi-Fi checks since Jan 2, 2026 (last N36207, Oct 18, 2026).
Aircraft seen on UA1597: Boeing 737-800, Boeing 757-300, Boeing 757-200, Airbus A320.