About 57% Starlink odds, weighted to recent UA1238 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 83 recent flights; Starlink found in 6 of 13 Wi-Fi checks since Feb 16, 2026 (last N37464, Oct 19, 2026).
Aircraft seen on UA1238: Boeing 737-900ER, Boeing 737-800, Boeing 737 MAX 8, Airbus A320.