About 11% Starlink odds, weighted to recent UA2603 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 74 recent flights; Starlink found in 4 of 4 Wi-Fi checks since Jun 30, 2026 (last N17401, Sep 12, 2026).
Aircraft seen on UA2603: Boeing 737 MAX 9, Boeing 737-900ER.