About 40% Starlink odds, weighted to recent UA453 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 64 recent flights; Starlink found in 6 of 14 Wi-Fi checks since Jan 2, 2026 (last N17233, Sep 7, 2026).
Aircraft seen on UA453: Boeing 737-800, Boeing 737 MAX 9, Boeing 737 MAX 8, Boeing 737-900ER.