About 43% Starlink odds, weighted to recent UA5637 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 79 recent flights; Starlink found in 23 of 25 Wi-Fi checks since Jan 11, 2026 (last N609UX, Sep 25, 2026).
Aircraft seen on UA5637: Embraer E-175, Bombardier CRJ-200.