About 46% Starlink odds, weighted to recent UA1813 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 106 recent flights; Starlink found in 13 of 18 Wi-Fi checks since Feb 27, 2026 (last N14539, Sep 23, 2026).
Aircraft seen on UA1813: Boeing 737 MAX 9, Airbus A319, Airbus A321neo, Boeing 737-800.