About 48% Starlink odds, weighted to recent UA3878 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 19 recent flights; Starlink found in 0 of 8 Wi-Fi checks since May 29, 2026.
Aircraft seen on UA3878: Boeing 787-9, Boeing 757-200, Boeing 737 MAX 9, Airbus A319.