About 33% Starlink odds, weighted to recent UA1978 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 120 recent flights; Starlink found in 4 of 7 Wi-Fi checks since Mar 21, 2026 (last N33209, Jun 22, 2026).
Aircraft seen on UA1978: Airbus A319, Airbus A320, Boeing 737-800.