About 18% Starlink odds, weighted to recent UA3917 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 30 recent flights; Starlink found in 2 of 3 Wi-Fi checks since Jun 11, 2026 (last N67812, Aug 25, 2026).
Aircraft seen on UA3917: Boeing 737 MAX 8, Boeing 737-900ER, Boeing 737-800.