About 36% Starlink odds, weighted to recent UA563 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 76 recent flights; Starlink found in 6 of 9 Wi-Fi checks since Feb 26, 2026 (last N17229, Oct 7, 2026).
Aircraft seen on UA563: Boeing 737-800, Airbus A321neo, Airbus A319.