About 46% Starlink odds, weighted to recent UA1588 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 86 recent flights; Starlink found in 13 of 26 Wi-Fi checks since Jan 2, 2026 (last N27246, Sep 16, 2026).
Aircraft seen on UA1588: Boeing 737-800, Boeing 737 MAX 8.