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 diverted and landed back at London without incident. Cabin depressurization was reported as the cause.

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 covered by several news organizations including Sky News, CBS News, and The Guardian.