About 90% Starlink odds, weighted to recent UA4637 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 71 recent flights; Starlink found in 12 of 13 Wi-Fi checks since Jan 30, 2026 (last N623UX, Sep 29, 2026).
Aircraft seen on UA4637: Embraer E-175.