About 68% Starlink odds, weighted to recent UA5389 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 74 recent flights; Starlink found in 24 of 25 Wi-Fi checks since Jan 9, 2026 (last N790SK, Sep 22, 2026).
Aircraft seen on UA5389: Bombardier CRJ-550, Embraer E-175.