About 56% Starlink odds, weighted to recent UA3890 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 27 recent flights; Starlink found in 2 of 10 Wi-Fi checks since Jun 11, 2026 (last N37464, Sep 5, 2026).
Aircraft seen on UA3890: Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800, Airbus A321neo.