About 36% Starlink odds, weighted to recent UA1963 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 198 recent flights; Starlink found in 5 of 17 Wi-Fi checks since Jan 2, 2026 (last N73251, Oct 11, 2026).
Aircraft seen on UA1963: Airbus A320, Boeing 737-800, Boeing 737-900ER, Boeing 737 MAX 8.