About 15% Starlink odds, weighted to recent UA1664 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 36 recent flights; Starlink found in 1 of 6 Wi-Fi checks since Jan 16, 2026 (last N44501, Sep 21, 2026).
Aircraft seen on UA1664: Boeing 737 MAX 9, Airbus A321neo, Boeing 737.