About 26% Starlink odds, weighted to recent UA1604 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 173 recent flights; Starlink found in 15 of 29 Wi-Fi checks since Jan 15, 2026 (last N33284, Oct 16, 2026).
Aircraft seen on UA1604: Boeing 737-800, Boeing 757-300, Boeing 737-900ER, Airbus A319.