About 50% Starlink odds, weighted to recent UA2120 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 72 recent flights; Starlink found in 2 of 12 Wi-Fi checks since Jan 31, 2026 (last N14540, Sep 11, 2026).
Aircraft seen on UA2120: Airbus A321neo, Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737 MAX 8.