A British Airways Boeing 777 flying from London to Chicago declared an emergency on October 5, 2026, after losing around 27,000 feet of altitude rapidly. The aircraft turned back and returned to London safely. Cabin depressurization was identified as the reason for the emergency.

A passenger on board reported a sudden drop in altitude and pressure during the incident. The frightening experience unfolded over the Atlantic before the crew made the decision to divert. The flight's diversion was reported by multiple outlets including Sky News, CBS News, and The Guardian.