About 18% Starlink odds, weighted to recent UA2039 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 84 recent flights; Starlink found in 3 of 7 Wi-Fi checks since Jul 5, 2026 (last N79279, Sep 27, 2026).
Aircraft seen on UA2039: Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737 MAX 8, Boeing 737-800.