About 12% Starlink odds, weighted to recent UA1647 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 113 recent flights; Starlink found in 3 of 10 Wi-Fi checks since Jan 16, 2026 (last N37422, Sep 29, 2026).
Aircraft seen on UA1647: Boeing 737-900ER, Boeing 737 MAX 8, Boeing 737-900, Boeing 737-800.