About 6% Starlink odds, weighted to recent UA889 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 139 recent flights; Starlink found in 2 of 26 Wi-Fi checks since Jan 2, 2026 (last N37018, Sep 26, 2026).
Aircraft seen on UA889: Boeing 777-200ER, Boeing 777-200, Boeing 777-300.