About 18% Starlink odds, weighted to recent UA2139 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 67 recent flights; Starlink found in 5 of 12 Wi-Fi checks since Jan 2, 2026 (last N14557, Sep 6, 2026).
Aircraft seen on UA2139: Airbus A320, Boeing 737 MAX 9, Airbus A321neo, Boeing 737 MAX 8.